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Consult the Government of Canada’s terminology data bank.

IMAGE FIELD [70 records]

Record 1 2026-03-25

English

Subject field(s)
  • Surgical Instruments
  • Eye Surgery
CONT

Macular surgery often requires high image resolution than is provided by the [wide-angle viewing systems]. In such a scenario, a macular lens is preferred to increase the magnification of the posterior pole for more delicate and precise surgical maneuvers, such as internal limiting membrane(ILM) and ERM [epiretinal membrane] dissection. These lenses provide a much smaller field of view, limiting their use to primarily posterior pole surgery. The view provided through these lenses is direct, thus inversion is not necessary. Most are contact lenses and require either a coupling agent or a handheld irrigation system... Lenses come in disposable and nondisposable forms.

OBS

flat lens: ... a lens with minimal curvature across its surface.

OBS

macular lens: designation usually used in the plural.

Key term(s)
  • macular lenses

French

Domaine(s)
  • Instruments chirurgicaux
  • Chirurgie de l'œil
OBS

Lentille oculaire à courbure minimale employée pendant une chirugie maculaire.

Spanish

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Record 2 2026-03-20

English

Subject field(s)
  • Medical Instruments and Devices
  • Diagnostic Procedures (Medicine)
  • The Eye
CONT

Genesis of the scanning laser ophthalmoscope.... In the scanning device, the illumination is incident on a small spot of the fundus for a short time period, the illumination beam is displaced to the adjacent small spot, and this continues until the field of view of the fundus is covered. Simultaneously, with the spot of illumination, the scattered light is detected; the accumulation of all of the light from all of the illuminated spots forms the image of the fundus as seen on the display of the scanning laser ophthalmoscope.

CONT

Scanning laser ophthalmoscopes produce high-contrast images even through narrow pupils. Using various color lasers, this method can [allow visualization of] particular structures of the retina noninvasively, i.e., without injection of a contrast agent. These structures include nerve fibers, drusen, nevi, and autofluorescent material.

French

Domaine(s)
  • Instruments et appareillages médicaux
  • Méthodes diagnostiques (Médecine)
  • Oeil
DEF

Système ophtalmoscopique permettant d'obtenir une image de la surface rétinienne grâce à l'illumination par un faisceau laser mobile.

Spanish

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Record 3 2026-02-18

English

Subject field(s)
  • Radiography (Medicine)
  • Diagnostic Procedures (Medicine)
  • Vessels (Medicine)
  • The Eye
CONT

Fluorescein angiography and digital image analysis. All patients were subjected to fluorescein angiography of the right eye preoperatively. Retinal angiography was also performed CPB [cardiopulmonary bypass], [five] minutes before the bypass period... Retinal angiograms were assessed first by direct inspection of the whole 30-degree field of the retina shown on the angiogram after back projection onto a screen and second by digital image analysis...

OBS

angiogram: An x-ray or computer image ... of the blood vessels and blood flow in the body.

French

Domaine(s)
  • Radiographie (Médecine)
  • Méthodes diagnostiques (Médecine)
  • Vaisseaux (Médecine)
  • Oeil
OBS

cliché : Image obtenue par des procédés photographiques.

Spanish

Save record 3

Record 4 2025-03-27

English

Subject field(s)
  • Simulation (Cybernetic Systems)
  • Collaboration with WIPO
CONT

Smart eyewear is defined as eyewear incorporating a near-to-eye display. As used herein, near-to-eye display means a display, device, or system, such as a retinal projector, virtual retinal display, visualization element, head-mounted display, heads-up display, or other near-to-eye system, typically worn on the head of a user that generates an image near the eye. In a smart eyewear configuration, a display device is often mounted adjacent to an edge of each of the wearer's eyes and an image is typically displayed in the center of each lens. The location of the displayed image, therefore, forces the wearer to gaze in a direction to view the image generated by the display. Typically positioned near the user's eye, the display is aligned to the central region of the user's field of view to allow review of the displayed information with little or no head movement. This enables the user to view the display while also viewing the area outside the central region and interacting with the surrounding environment. In another embodiment, the displayed image is aligned to a region other than the central region of the user's field of view.

CONT

Near-eye display devices are configured to present images to a user via a display that is positioned close to the user’s eyes. For example, a head-mounted augmented reality display device may be worn on a user’s head to position a near-eye display directly in front of a user’s eyes. A near-eye display may be at least partially see-through to allow a user to view a real-world background in combination with displayed virtual objects. This may allow virtual objects to be displayed such that the virtual objects appear to exist within the real-world environment.

CONT

The technology provides one or more embodiments of a near-eye display(NED) device system. An embodiment of a NED device system comprises a near-eye display device including a near-eye support structure and a near-eye display(NED) supported by the near-eye support structure and having a display field of view. The NED system further comprises an image generation unit supported by the near-eye support structure which outputs image data which is optically coupled to the near-eye display(NED).

OBS

near-to-eye display; near-eye display: data validated by Canadian subject-field experts from École Polytechnique de Montréal, MasterpieceVR and McGill University.

French

Domaine(s)
  • Simulation (Systèmes cybernétiques)
  • Collaboration avec l'OMPI

Spanish

Campo(s) temático(s)
  • Simulación (Sistemas cibernéticos)
  • Colaboración con la OMPI
CONT

[…] se contempla que al menos una pantalla […] comprendida en el dispositivo […] no permita ver al usuario a través de ella (es decir, que no sea transparente), siendo preferentemente de tipo NED (siglas en inglés de la expresión "near-eye display" o pantalla cercana al ojo) […]

Save record 4

Record 5 2025-03-26

English

Subject field(s)
  • Applications of Automation
  • Artificial Intelligence
CONT

Another important subject within computer vision is image segmentation. It is the process of dividing an image into different regions based on the characteristics of pixels to identify objects or boundaries to simplify an image and more efficiently analyze it. Segmentation impacts a number of domains, from the filmmaking industry to the field of medicine. For instance, the software behind green screens implements image segmentation to crop out the foreground and place it on a background for scenes that cannot be shot or would be dangerous to shoot in real life

Key term(s)
  • 1613429
  • IAGENAI25

French

Domaine(s)
  • Automatisation et applications
  • Intelligence artificielle
CONT

La segmentation d'images constitue la base de nombreuses tâches de vision par ordinateur[,] comme la détection d'objets et la classification d'images. C'est une méthode qui consiste à diviser une image en sous-groupes. Cette division s'effectue habituellement en fonction du contour ou des limites visibles des objets dans une image afin d'en réduire la complexité. [...] La segmentation d'images a plusieurs utilités dans les domaines des véhicules autonomes, de l'analyse d'images médicales et d'images satellites, de la vidéosurveillance et d'autres tâches de reconnaissance et de détection.

Spanish

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Record 6 2025-01-06

English

Subject field(s)
  • Optics
  • Computer Graphics
  • Photography
CONT

Second, there is liquid-surface holography, in which, usually, the liquid surface, disturbed by both the scattered and the reference acoustic field, is used to reflect light which is made to produce the final image; the hologram itself is at the surface.

Key term(s)
  • liquid surface holography

French

Domaine(s)
  • Optique
  • Infographie
  • Photographie

Spanish

Save record 6

Record 7 2024-04-29

English

Subject field(s)
  • Remote Sensing
  • Radar, Radio Guidance and Goniometry
  • Cartography
CONT

Colour enhancement. Remote-sensing systems that operate VIS-NIR [visible, near-infrared] range typically include three channels that approximate the response of the human eye, and afford the opportunity to construct RGB [red-green-blue] composite image that resembles natural colour. Unfortunately, when displayed, many such images appear to have mostly tones of gray … Contrast stretching may help, but the colours tend to be far less saturated than we are accustomed to when observing or photographing in the field. Besides trying standard stretches, [there is] another way to enhance natural colour … The results of enhancing images to bring out colour are highly dependent on the nature of landscape and the image measurements.

OBS

colour enhancement: designation officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).

Key term(s)
  • color enhancement

French

Domaine(s)
  • Télédétection
  • Radar, radioguidage et radiogoniométrie
  • Cartographie
OBS

Ensemble de prétraitements destinés à mieux faire ressortir certains aspects colorés d'une image, pour en faciliter l'analyse visuelle.

OBS

accentuation des couleurs : désignation uniformisée par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).

Spanish

Campo(s) temático(s)
  • Teledetección
  • Guía radárica, radioguía y radiogoniometría
  • Cartografía
Save record 7

Record 8 2022-05-31

English

Subject field(s)
  • Computer Display Technology
  • Computer Graphics
  • Photography
CONT

Temporal variation in the image luminance field is caused by several factors including camera motion, rigid object motion, nonrigid deformation, illumination and reflectance change, and sensor noise.

French

Domaine(s)
  • Techniques d'affichage (Ordinateurs)
  • Infographie
  • Photographie

Spanish

Save record 8

Record 9 2021-07-14

English

Subject field(s)
  • Scientific Instruments
  • Optics
  • Remote Sensing
CONT

SITELLE will be an imaging Fourier transform spectrometer capable of obtaining the visible(350 nm – 950 nm) spectrum of every source of light in a field of view of 15 arcminutes, with 100% spatial coverage and a spectral resolution ranging from R=1(deep panchromatic image) to R=104(for gas dynamics).

French

Domaine(s)
  • Instruments scientifiques
  • Optique
  • Télédétection

Spanish

Save record 9

Record 10 2019-10-30

English

Subject field(s)
  • Computer Mathematics
  • Computer Programs and Programming
CONT

During the entire survey the [dual frequency identification sonar(DIDSON) ] pitch angle was automatically controlled by an aiming algorithm that tries to equalize the brightness across the DIDSON's field of view to provide the best possible image.

French

Domaine(s)
  • Mathématiques informatiques
  • Programmes et programmation (Informatique)

Spanish

Campo(s) temático(s)
  • Matemáticas para computación
  • Programas y programación (Informática)
Save record 10

Record 11 2017-05-09

English

Subject field(s)
  • Nervous System
OBS

This simple experiment with a mirror illustrates one aspect of visual awareness. It relies on a phenomenon called binocular rivalry, which occurs when each eye has a different input from the same part of the visual field. Motion in the field of one eye can cause either the entire image or parts of the image to be erased. The movement captures the brain's attention.

French

Domaine(s)
  • Système nerveux
OBS

Cette expérience simple, qui illustre un aspect de la perception visuelle consciente, se fonde sur le phénomène de concurrence visuelle, laquelle survient lorsque la même partie du champ visuel de chaque œil reçoit une stimulation différente. Un mouvement dans le champ d'un œil efface une partie ou la totalité de l'image, car le mouvement attire l'attention du cerveau.

Spanish

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Record 12 2016-01-25

English

Subject field(s)
  • Coining
  • Coins and Bank Notes
  • Numismatics
CONT

[The] coin features a brilliant image relief struck on a brilliant field. [This] brilliant uncirculated coin was struck up to two times on numismatic presses allowing the rich engraving details to shine through.

Key term(s)
  • B.U.
  • BU

French

Domaine(s)
  • Monnayage
  • Pièces de monnaie et billets de banque
  • Numismatique

Spanish

Campo(s) temático(s)
  • Acuñación de moneda
  • Monedas y billetes
  • Numismática
Save record 12

Record 13 2016-01-13

English

Subject field(s)
  • Geophysics
CONT

In solid-Earth physics the production of the gravity field model is not in itself the primary goal; rather the aim is the provision of a detailed three-dimensional image of density variations in the lithosphere and upper mantle, derived from a combination of gravity, seismic tomography, lithospheric magnetic-anomaly information and topographic models.

French

Domaine(s)
  • Géophysique

Spanish

Campo(s) temático(s)
  • Geofísica
CONT

Física de la Tierra sólida. Abarca tópicos como: Geodinámica y Geofísica Marina, Paleomagnetismo, Fenómenos Naturales (impacto, riesgos y vulnerabilidad), Sismología y Vulcanología.

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Record 14 2014-06-13

English

Subject field(s)
  • Scientific Instruments
  • Photoelectricity and Electron Optics
  • Analytical Chemistry
CONT

... the ion microscope, a direct imaging SIMS [secondary ion mass spectrometry] instrument, produces an elemental image of an entire field of view by a method of simultaneous multipoint detection.

French

Domaine(s)
  • Instruments scientifiques
  • Photo-électricité et optique électronique
  • Chimie analytique
DEF

Dispositif d'optique électronique dans lequel la source de corpuscules utilisée pour former l'image est constituée par des ions; examen d'objets portés à haute température.

Spanish

Campo(s) temático(s)
  • Instrumentos científicos
  • Fotoelectricidad y óptica electrónica
  • Química analítica
Save record 14

Record 15 2013-10-18

English

Subject field(s)
  • Remote Sensing
CONT

Although the scanning mirror rotates at a constant speed, the IFOV [instantaneous field of view] of the sensor moves faster(relative to the ground) and scans a larger area as it moves closer to the edges. This effect results in the compression of image features at points away from the nadir and is called tangential scale distortion.

French

Domaine(s)
  • Télédétection
CONT

Même si le miroir permettant le balayage tourne à une vitesse constante, le CVI [champ de visée instantané] du capteur se déplace plus rapidement par rapport à la surface et capte une région plus grande lorsqu'il se déplace près des bords de l'image. Cet effet produit une compression des caractéristiques de l'image pour les points éloignés du nadir et s'appelle distorsion tangentielle d'échelle.

Spanish

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Record 16 2010-08-11

English

Subject field(s)
  • Remote Sensing
DEF

The smallest usable element of an image.

CONT

For applications such as cartography, where it is important to precisely locate the correct position of features such as roads and boundaries, it has been difficult or impossible to evaluate the relative performance of different sensors through the standard specifications of IFOV [Instantaneous Field of View] or spatial resolution. In an effort to overcome this difficulty, a second concept... labeled spatial effective resolution element(SERE), is evolving. Although this concept is not fully developed, it provides an indication of the factors to be taken into account when attempting to correlate different systems. These factors include : surface area on the Earth, or its equivalent on the image plane, the IFOV and the spread function resulting from optical diffraction and aberrations as well as electronic lag or smear. Essentially, the concept of SERE is an attempt to determine the IFOV of the hypothetical, unsampled(ideal) scanning system which would yield performance equivalent to that of any given real sensor system. Whether such an equivalence exists is yet to be determined.

OBS

spatial effective resolution element; SERE: term and abbreviation officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).

French

Domaine(s)
  • Télédétection
DEF

Plus petit élément utilisable de l'image.

OBS

élément de résolution spatiale efficace : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).

Spanish

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Record 17 2008-08-25

English

Subject field(s)
  • Thermoanalysis
CONT

In Hungary, the technique of infrared thermogrammetry (IR-TGM) in the field of radiation biology was first applied in 1984, when the authors published two case studies on a local radiation injury and suggested that both contact and IR-TGM were useful tools in detection of the areas of radiation injury.

CONT

Computerized evaluation of infrared images opens new vistas for infrared thermogrammetry(IR-TGM). While it extends our earlier knowledge regarding temperature field analysis, it requires deeper understanding of relations of thermal phenomena and also more intuitive thermo-technical skills for image processing. Examples from diverse areas, e. g. energy saving, thermal defectometry, electrotechnics, are quoted and practical applications of IR-TGM in thermal physics of buildings are discussed.

French

Domaine(s)
  • Thermo-analyse

Spanish

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Record 18 2008-06-18

English

Subject field(s)
  • National Honorary Distinctions (Non-Canadian)
  • Engineering
OBS

The Canadian Consulting Engineering Awards recognized and celebrated outstanding achievements in the field of engineering. Presented by the Association of Canadian Engineering Companies in collaboration with Canadian Consulting Engineer magazine, this national awards program provides positive visibility to member firms and enhances the image of the industry.

French

Domaine(s)
  • Titres honorifiques et décorations nationaux non canadiens
  • Ingénierie
OBS

Les Prix canadiens du génie-conseil ont reconnu et célébré des projets grandioses du secteur de l'ingénierie. Présenté par l'Association des firmes d'ingénierie du Canada en collaboration avec la revue Canadian Consulting Engineer, ce programme de Prix de niveau national permet une visibilité aux firmes membres de l'AFIC et aide à l'image de l'industrie.

Spanish

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Record 19 2008-02-25

English

Subject field(s)
  • Optics
  • Optical Instruments
  • Audiovisual Techniques and Equipment
  • Cinematography
DEF

Curvilinear distortion of an optical or electronic image in which horizontal and vertical straight lines appear concave, bowed inwards.

DEF

Optical distortion of the image formed by an uncorrected lens. Straight lines parallel to the edge of the field are reproduced as curved lines convex towards the optical axis.

OBS

Compare "barrel distortion".

Key term(s)
  • pin-cushion distortion

French

Domaine(s)
  • Optique
  • Instruments d'optique
  • Audiovisuel (techniques et équipement)
  • Cinématographie
DEF

Distorsion géométrique telle que les lignes ne passant pas par l'axe optique ou le centre de l'image sont reproduites avec une convexité dirigée vers ce centre et qui croît avec la distance à celui-ci.

CONT

Si l'on photographie une grille formée de barreaux droits égaux et équidistants, l'image doit les restituer parfaitement rectilignes; lorsque les barreaux marginaux sont incurvés vers l'extérieur, la distorsion est dite «en barillet», s'ils sont incurvés vers l'intérieur c'est une distorsion «en coussinet» [...]

Spanish

Campo(s) temático(s)
  • Óptica
  • Instrumentos ópticos
  • Técnicas y equipo audiovisuales
  • Cinematografía
CONT

Al diafragmar una lente simple se produce una distorsión que puede manifestarse con dos aspectos diferentes, según la posición del diafragma [...]: si el diafragma se halla frente a la lente, la imagen dada por ésta adolece de distorsión en barrilete y las rectas de la cuadrícula aparecen como curvas con su concavidad hacia el eje óptico; por el contrario, la posición del diafragma detrás de la lente, da una distorsión en corsé [...]

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Record 20 2007-12-14

English

Subject field(s)
  • Facilities and Instruments (Astronomy)
  • Remote Sensing
CONT

The interest of a ground based Slit Aperture Telescope(SAT) which operates with a long thin pupil has been underlined for applications in the field of high angular resolution observations by speckle-interferometric techniques. The SAT lies halfway between the Michelson stellar interferometer and the standard telescope with circular aperture. The authors present the principle of an image processing algorithm which could be used associated with a space-SAT for astronomical image reconstruction. A full coverage of the two dimensional Fourier plane of the astronomical object can be obtained by rotating the SAT around its optical axis. The method of image reconstruction is analogous to those used in computerized tomography and uses Fast Fourier Transform algorithm. The interest of the use of a rotating space-SAT among synthetic apertures is its capability of giving a reconstructed image of the astronomical object simultaneously in several light wavelengths, each colored image being comparable with the others for fruitful astrophysical applications.

French

Domaine(s)
  • Installations et instruments (Astronomie)
  • Télédétection
CONT

Le télescope à pupille fente fournit des images unidimensionnelles et opère en synthèse d'ouverture. En l'absence de turbulence atmosphérique, l'image focale fournie par un télescope à pupille fente est quasiment une projection unidimensionnelle de l'objet observé. Après une rotation complète autour de son axe optique, on obtient un ensemble de projections de l'objet observé qui n'est autre que la transformée de Radon de l'objet.

Spanish

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Record 21 2007-08-23

English

Subject field(s)
  • Medical Instruments and Devices
  • Magnetic Resonance Imaging
DEF

[An apparatus that] uses a magnetic field, radiofrequency waves, and computerized image processing to produce cross-sectional images of the anatomy.

OBS

The technique [is] called magnetic resonance imaging rather than nuclear magnetic resonance imaging (NMRI) because of the negative connotations associated with the word nuclear ...

French

Domaine(s)
  • Instruments et appareillages médicaux
  • Imagerie par résonance magnétique
OBS

Dans le domaine médical, on préfère employer le terme «imagerie par résonance magnétique» plutôt que «imagerie par résonance magnétique nucléaire» à cause de la connotation négative du mot «nucléaire».

Spanish

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Record 22 2007-08-17

English

Subject field(s)
  • Radar, Radio Guidance and Goniometry
  • Spacecraft
  • Remote Sensing
CONT

Thematic classes are defined by the spectral characteristics of pixels within an image that correspond to training areas in the field chosen to represent known features(e. g. habitats). Each pixel within the image is then assigned to a thematic class using one of several decision rules.

OBS

thematic class: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).

French

Domaine(s)
  • Radar, radioguidage et radiogoniométrie
  • Engins spatiaux
  • Télédétection
CONT

Dans le contexte de la télédétection, [...] les classes thématiques [...] sont des catégories propres au thème traité (classes d'occupation du sol : forêt, eau, sol nu, etc.) [...]

OBS

classe thématique : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2.

Spanish

Campo(s) temático(s)
  • Guía radárica, radioguía y radiogoniometría
  • Naves espaciales
  • Teledetección
Save record 22

Record 23 2007-04-23

English

Subject field(s)
  • Optical Instruments
  • Meats and Meat Industries
DEF

An apparatus for the detection of trichinae in the flesh of animals, as of service.

CONT

The trichinoscope is used to detect Trichinella spiralis in samples of the diaphragmatic pillars from manufacturing grade pigs with a head-on dressed weight of 90 kg or more. [It] is a low power stage microscope with image projecting capacity [which] has a large field of view to facilitate easy search of the sample.

French

Domaine(s)
  • Instruments d'optique
  • Salaison, boucherie et charcuterie
DEF

Appareil destiné à dépister la trichinose dans les carcasses de porcs.

Spanish

Save record 23

Record 24 2007-04-11

English

Subject field(s)
  • Magnetic Resonance Imaging
CONT

Aliasing artifact.... Generated when the measurement object is outside the FOV [field of view] but still within the sensitive volume of the coil. Signals from outside the FOV overlap the image, but on the opposite side.

Key term(s)
  • aliasing artefact
  • wrap around artefact
  • wrap-around artefact
  • wrap-around artifact

French

Domaine(s)
  • Imagerie par résonance magnétique
CONT

L'artefact de repliement, également appelé aliasing, survient lorsqu'une structure anatomique située en dehors du champ de vue apparaît à l'intérieur du champ de vue, superposée aux autres structures normalement présentes. Cet artefact est donc possible lorsque l'on utilise un champ de vue plus petit que la région anatomique à explorer ou lorsque ce champ de vue est décentré par rapport à cette région anatomique.

OBS

artéfact : Cette graphie, puisée des Rectifications de l'orthographe recommandées par le Conseil supérieur de la langue française, est attestée dans le Petit Robert (2006).

Spanish

Save record 24

Record 25 2007-03-17

English

Subject field(s)
  • Spacecraft
  • Space Exploration Equipment and Tools
DEF

A middle structure used to support spacecraft platform equipments.

CONT

... the instrument deck of the IMAGE observatory is located in the middle of the spacecraft. Below the deck are four bays that contain subsystems for electrical power, communications, command & date handlings, and attitude determination and control.... The instrument deck includes a suite of three Neutral Atom Imaging instruments used to record the glow of fast atoms coming from throughout the Earth's magnetic field.

French

Domaine(s)
  • Engins spatiaux
  • Équipement et outillage d'exploration spatiale
DEF

Structure intermédiaire servant à fixer des équipements sur la plateforme d'un véhicule spatial.

OBS

porte-équipement : terme uniformisé par le Comité d'uniformisation de la terminologie spatiale (CUTS).

Spanish

Save record 25

Record 26 2007-01-31

English

Subject field(s)
  • Radar, Radio Guidance and Goniometry
  • Spacecraft
  • Remote Sensing
CONT

[The] push-broom scanner [is a] type of imaging system... commonly used in optical remote sensing satellites such as SPOT. The imaging system has a linear detector array(usually of the CCD type) consisting of a number of detector elements(6000 elements in SPOT HRV). Each detector element projects an "instantaneous field of view(IFOV) "on the ground. The signal recorded by a detector element is proportional to the total radiation collected within its IFOV. At any instant, a row of pixels are formed. As the detector array flies along its track, the row of pixels sweeps along to generate a two-dimensional image.

OBS

linear detector array: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).

French

Domaine(s)
  • Radar, radioguidage et radiogoniométrie
  • Engins spatiaux
  • Télédétection
CONT

La mission d'observation est réalisée par un instrument à barrette CCD [charged-coupled device] de type «push-broom» avec une visée au nadir : sous l'effet du défilement du satellite sur son orbite, une barrette de détecteurs carrés disposés en ligne acquiert successivement les différentes lignes permettant de reconstituer une image. La taille de chaque détecteur élémentaire et la période d'échantillonnage sont ajustées de telle manière qu'en une période d'échantillonnage le point subsatellite se déplace de la projection au sol d'un détecteur au nadir.

OBS

barrette de détecteurs : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).

PHR

Capteur à barrette de détecteurs.

Spanish

Campo(s) temático(s)
  • Guía radárica, radioguía y radiogoniometría
  • Naves espaciales
  • Teledetección
Save record 26

Record 27 2007-01-31

English

Subject field(s)
  • Remote Sensing
DEF

A resampling technique which selects the nearest pixel value in the input image to write to each output location.

CONT

The raw images were transformed to geographic co-ordinates using ground control points, identifiable both on imagery and in the field. Nearest neighbour resampling was used with an RMS [Root Mean Square] transformation error of approximately one pixel. This enabled accurate identification and location of sites within the SAR image.

OBS

nearest neighbour resampling: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).

Key term(s)
  • nearest-neighbour resampling
  • nearest neighbor resampling
  • nearest-neighbor resampling

French

Domaine(s)
  • Télédétection
DEF

Technique de rééchantillonnage qui consiste à calculer l'indice de luminance d'un pixel dans l'image corrigée en se référant à l'indice de luminance du pixel le plus près, dans l'image d'entrée.

CONT

Méthode de rééchantillonnage du plus proche voisin. C'est l'unique solution si l'image contient : des valeurs nominales (catégories) [et] des valeurs ordinales (classes).

OBS

rééchantillonnage du plus proche voisin : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).

Spanish

Campo(s) temático(s)
  • Teledetección
Save record 27

Record 28 2006-05-12

English

Subject field(s)
  • Remote Sensing
  • Mathematical Geography
DEF

An image consisting of smoothly varying gray values.

CONT

Use of a low-pass filter can effectively remove image noise, however, it will deemphasize all high frequency information in an image. Therefore, it is important that you recreate the meaningful high frequency information. This is accomplished by passing a high-pass filter over the low-pass image you created and then adding back a percentage of the high-pass image.

OBS

The term "low-pass image" is mostly used by the field specialists.

OBS

low frequency image; low-pass image: terms officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).

French

Domaine(s)
  • Télédétection
  • Géographie mathématique
DEF

Image qui ne contient plus que les harmoniques inférieures d'une transformée de Fourier bidimensionnelle.

OBS

Image où les dégradés de gris sont uniformisés.

OBS

Le terme image filtrée passe-bas appartient à la langue de spécialité.

OBS

image de basse fréquence; image filtrée passe-bas : termes uniformisés par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).

Spanish

Save record 28

Record 29 2006-05-12

English

Subject field(s)
  • Remote Sensing
  • Mathematical Geography
CONT

Use of a low-pass filter can effectively remove image noise, however, it will deemphasize all high frequency information in an image. Therefore, it is important that you recreate the meaningful high frequency information. This is accomplished by passing a high-pass filter over the low-pass image you created and then adding back a percentage of the high-pass image.

OBS

The term "high-pass image" is mostly used by the field specialists.

OBS

high-frequency image; high-pass image: terms officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).

French

Domaine(s)
  • Télédétection
  • Géographie mathématique
DEF

Image qui ne contient que les harmoniques supérieures d'une transformée de Fourier bidimensionnelle.

OBS

Le terme «image filtrée passe-haut» appartient à la langue de spécialité.

OBS

image de haute fréquente; image filtrée passe-haut : termes uniformisés par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).

Spanish

Save record 29

Record 30 2005-12-19

English

Subject field(s)
  • Surgical Instruments
  • Applications of Automation
CONT

As he works, the surgeon is looking at a 3-D camera image of the operative field, where mechanical silver hands are gently threading a suture. In this operating theater, a robotic assistant is "closing" on the patient.

French

Domaine(s)
  • Instruments chirurgicaux
  • Automatisation et applications
CONT

500 malades ont déjà été opérés [...] avec des aides robotisées, un robot stéréotaxique ou un microscope de neurochirurgie robotisée.

Spanish

Save record 30

Record 31 2005-10-06

English

Subject field(s)
  • Optical Glass
  • Photography
  • Cinematography
  • Television (Radioelectricity)
DEF

A microscope [or camera] objective that provides an image in which all parts of the field are simultaneously in focus.

French

Domaine(s)
  • Verres d'optique
  • Photographie
  • Cinématographie
  • Télévision (Radioélectricité)
DEF

Objectif de focalisation, notamment de microscope ou de caméra, procurant une image dont toutes les parties sont uniformément au foyer.

Spanish

Save record 31

Record 32 2004-09-09

English

Subject field(s)
  • Photography
DEF

On a screen focusing camera, a hinged back which can be turned at an angle to the vertical to improve the perspective of the image and extend the depth of field covered.

French

Domaine(s)
  • Photographie
CONT

[Sur un appareil-photo muni d'un châssis à verre dépoli le] rôle de la bascule arrière est de modifier la perspective et/ou d'augmenter la profondeur de champ.

Spanish

Save record 32

Record 33 2004-08-04

English

Subject field(s)
  • Audiovisual Techniques and Equipment
  • Photography
DEF

A camera that incorporates ground glass viewing, and includes most of the following features: a long bellows, a rising and falling front, horizontal and vertical swings, lateral shift of front and back, and either a reversible or a rotating back.

CONT

View camera [is] a term that applies to cameras that produce an individual image size of 5" X 4" or larger. It is most often found in a studio, and is sometimes even called a "studio camera", although the view camera can be transported and set up in the field.

OBS

The view camera’s versatility is valuable for the correction of distortions in architectural, close-up and illustrative photography.

Key term(s)
  • press-and-view camera
  • view-and-press camera

French

Domaine(s)
  • Audiovisuel (techniques et équipement)
  • Photographie
DEF

Appareil de photographie utilisé par les professionnels et ayant généralement la plupart des perfectionnements suivants : long soufflet, décentrement de l'objectif, dos à bascule, etc.

OBS

La chambre photographique, employée notamment dans les studios de photographe, a pendant longtemps été préférée pour la photographie architecturale.

Spanish

Save record 33

Record 34 2004-08-04

English

Subject field(s)
  • Photography
CONT

Pinhole Camera.... Because the pinhole is so small, exposures are usually several seconds or even minutes in length; this requires absolutely steady support for the camera. These factors and the reduced sharpness of the image are the main drawbacks of pinhole photography. However, the softness fo detail and the extreme depth of field can be used expressively with subjects that are suitable for time exposures.

French

Domaine(s)
  • Photographie
DEF

Photographie rudimentaire réalisé en utilisant une chambre fermée - la plupart du temps une boîte - munie en son centre d'un trou d'épingle parfaitement circulaire faisant l'office d'objectif photographique.

Spanish

Save record 34

Record 35 2004-08-03

English

Subject field(s)
  • Radiography (Medicine)
DEF

A camera that records the image at the output of the image intensifier on a spot film.

CONT

The spot film or photospot camera is positioned after a semitransparent mirror used as a light splitter which shunts about 15% of the light output of the image intensifier to a television camera. The rest of the light output is directed to the photospot camera or cine camera. When used with new, high resolution, large field of view image intensifiers, photospot cameras can record diagnostic images covering large anatomical regions of the body.

Key term(s)
  • spotfilm camera

French

Domaine(s)
  • Radiographie (Médecine)

Spanish

Save record 35

Record 36 2004-04-04

English

Subject field(s)
  • Optics
  • Photography
DEF

An image defect, usually caused by errors of centration, that results in the displacement of image points perpendicular to a radius from the center of the field.

French

Domaine(s)
  • Optique
  • Photographie
CONT

La distorsion tangentielle est causée par un mauvais ajustement des lentilles par rapport à l'axe optique et s'ajoute à la distorsion radiale.

Spanish

Save record 36

Record 37 2004-03-01

English

Subject field(s)
  • Photoelectricity and Electron Optics
  • Video Technology
  • Computer Graphics
DEF

... subtracting the image information from an empty field of view from that of the same field of view with the sample added.

OBS

[The flat field correction] process subtracts all background image information associated with such things as uneven lighting sources, lens dust etc.

French

Domaine(s)
  • Photo-électricité et optique électronique
  • Vidéotechnique
  • Infographie

Spanish

Save record 37

Record 38 2003-03-31

English

Subject field(s)
  • Information Processing (Informatics)
  • Internet and Telematics
  • Computer Programs and Programming
  • Programming Languages
CONT

A prompt requires author response. For example, a text equivalent entry field prominently displayed in an image insertion dialog would constitute a prompt. Prompts can be used to encourage authors to provide information needed to make content accessible(such as alternative text equivalents).

OBS

The English terminology on this record is standardized by the World Wide Web Consortium (W3C) whose role it is to establish standards relating to Internet technology. The French terminology was proposed by translators certified by the W3C and was verified by the author of this record.

French

Domaine(s)
  • Traitement de l'information (Informatique)
  • Internet et télématique
  • Programmes et programmation (Informatique)
  • Langages de programmation
CONT

Une invite est une requête de saisie pour l'auteur, que ce soit de l'information ou une décision. Une invite requiert une réponse de l'auteur. Par exemple, un champ de saisie d'équivalent texte affiché dans un dialogue d'insertion d'image devrait provoquer une invite. Les invites peuvent être utilisées pour encourager l'auteur à l'information requise pour rendre le contenu accessible (comme des équivalents texte alternatifs).

OBS

La terminologie anglaise de cette fiche est normalisée par le World Wide Web Consortium (consortium W3C) dont le rôle principal est d'établir les normes reliées aux technologies Internet. La terminologie française est proposée par des traducteurs agréés par le Consortium et elle a été vérifiée par l'auteur de cette fiche.

Spanish

Save record 38

Record 39 2003-03-31

English

Subject field(s)
  • Information Processing (Informatics)
  • Internet and Telematics
  • Computer Programs and Programming
  • Programming Languages
CONT

A prompt requires author response. For example, a text equivalent entry field prominently displayed in an image insertion dialog would constitute a prompt. Prompts can be used to encourage authors to provide information needed to make content accessible(such as alternative text equivalents).

OBS

The English terminology on this record is standardized by the World Wide Web Consortium (W3C) whose role it is to establish standards relating to Internet technology. The French terminology was proposed by translators certified by the W3C and was verified by the author of this record.

French

Domaine(s)
  • Traitement de l'information (Informatique)
  • Internet et télématique
  • Programmes et programmation (Informatique)
  • Langages de programmation
CONT

Une invite est une requête de saisie pour l'auteur, que ce soit de l'information ou une décision. Une invite requiert une réponse de l'auteur. Par exemple, un champ de saisie d'équivalent texte affiché dans un dialogue d'insertion d'image devrait provoquer une invite. Les invites peuvent être utilisées pour encourager l'auteur à l'information requise pour rendre le contenu accessible (comme des équivalents texte alternatifs).

OBS

La terminologie anglaise de cette fiche est normalisée par le World Wide Web Consortium (consortium W3C) dont le rôle principal est d'établir les normes reliées aux technologies Internet. La terminologie française est proposée par des traducteurs agréés par le Consortium et elle a été vérifiée par l'auteur de cette fiche.

Spanish

Save record 39

Record 40 2003-03-17

English

Subject field(s)
  • Computer Display Technology
CONT

The ElectroPhoretic Image Display(EPID) is a non-emissive display concept based on the transport of charged pigment particles in a colloidal suspension. The charged pigment particles are transported by means of an applied electric field. This phenomenon is commonly known as electrophoresis.

OBS

Two plates with electrodes are placed opposing each other, leaving a certain distance in between by using spacers, and a suspension composed of a dyed solvent and suspended charged pigment particles is enclosed between the plates. When a voltage difference is impressed between the two electrodes ... the pigment particles migrate to one side and then either the light color of the pigment or the dark color of the dyed solvent can be seen according to the polarity of the impressed voltage difference.

Key term(s)
  • EP display

French

Domaine(s)
  • Techniques d'affichage (Ordinateurs)
CONT

[...] le HP 110 devait être à l'origine le premier ordinateur à utiliser la technologie d'affichage électrophorétique développée (en partie) dans les laboratoires de recherche de Xerox à Palo Alto (Californie). Cette nouvelle technologie, faiblement dissipatrice en termes de consommation électrique [...], devrait être proposée ultérieurement.

Spanish

Save record 40

Record 41 2003-03-02

English

Subject field(s)
  • Optical Instruments
  • Photography
DEF

An auxiliary lens used to correct curvature of field as an alternative to curving the film or projection screen plane or stopping down the lens to improve definition across the whole field.

OBS

The field flattener is often placed near the image surface.

Key term(s)
  • field-flattener lens
  • field-flattening lens

French

Domaine(s)
  • Instruments d'optique
  • Photographie

Spanish

Save record 41

Record 42 2003-01-23

English

Subject field(s)
  • Physical Geography (General)
CONT

Differential image distortion is most serious for wide field spectroscopic applications, where differential distortion will result in light loss at the slit or optical fiber.

French

Domaine(s)
  • Géographie physique (Généralités)

Spanish

Save record 42

Record 43 2002-11-29

English

Subject field(s)
  • Radar, Radio Guidance and Goniometry
  • Air Navigation Aids
CONT

This aberration formula determines the appearance of any relativistic scene. It transforms the light rays making up the image between frames, irrespective of their origin. Figure 6 illustrates the aberration effect on a star field seen by observer moving through its rest frame.

French

Domaine(s)
  • Radar, radioguidage et radiogoniométrie
  • Aides à la navigation aérienne
CONT

Les détails du calcul sont subtils car par exemple les changements de repère en relativité affectent les mesures d'angle et donc la direction de la lumière (c'est l'effet d'aberration) de sorte que la vitesse radiale n'est pas la même dans un repère et dans l'autre.

Spanish

Save record 43

Record 44 2002-11-28

English

Subject field(s)
  • Orbital Stations
CONT

This truss segment, called "S5", is a mirror image of the P5 truss segment that arrived for processing at Kennedy Space Center in July 2001. The S5 truss segment is a 10-1/2-by-15-foot aluminum structure that will weigh 3, 900 pounds when fully processed. The truss segment will attach to the starboard side of the S4 truss and will be the tenth truss attached to the ISS [International Space Station] as part of a total 11-truss, girder-like structure that will ultimately extend the length of a football field.

CONT

The P5 and S5 segments are merely spacers that will provide enough room for the solar arrays to track the sun and not interfere with the other equipment, for example, the waste-heat radiators and antennas. The waste-heat radiators attached to segments S1 and P1 also must be clear of array movement.

OBS

S5 truss; integrated truss structure S5; S5; ITS-S5: terms and abbreviations officially approved by the International Space Station official approval Group (ISSOAG).

French

Domaine(s)
  • Stations orbitales
OBS

poutre S5; segment de poutre intégrée S5; S5, ITS-S5 : termes et abréviations uniformisés par le Groupe de travail de la terminologie de la Station spatiale internationale (GTTSSI).

Spanish

Save record 44

Record 45 2002-11-13

English

Subject field(s)
  • Theoretical Astronomy
CONT

Planck is the third Medium-Sized Mission(M3) of ESA's Horizon 2000 Scientific Programme. It is designed to image the anisotropies of the Cosmic Background Radiation Field over the whole sky, with unprecedented sensitivity and angular resolution. Planck will provide a major source of information relevant to several cosmological and astrophysical issues, such as testing theories of the early universe and the origin of cosmic structure.... After launch, Planck and FIRST will separate and will be placed in different orbits around the second Lagrangian point of the Earth-Sun System.

Key term(s)
  • second Lagrangian point of the Earth Sun system

French

Domaine(s)
  • Astronomie théorique
CONT

L'Agence Spatiale Européenne (ESA) a attribué au consortium mené par Alcatel Space un contrat d'un montant de 369 millions d'euros pour la réalisation des deux satellites scientifiques Herschel et Planck. [...] Planck permettra de mieux comprendre l'origine et l'évolution des grandes structures de notre univers juste après le fameux Big Bang. Il mesurera les fluctuations du corps noir cosmologique avec une sensibilité et une résolution sans précédent. [...] Herschel et Planck seront lancés ensemble en 2007 à bord d'une même Ariane 5, mais seront séparés juste après le lancement pour être opérés chacun indépendamment. Leur orbite opérationnelle se situera alors autour d'un point virtuel appelé «le deuxième point de Lagrange» à une distance moyenne de 1,5 million de kilomètres de la Terre.

Spanish

Save record 45

Record 46 2002-11-13

English

Subject field(s)
  • Range Measurements (Telecommunications)
  • Radio Waves
CONT

Theoretical studies have shown the potential scientific value of multi-spacecraft radio tomographic imaging of the magnetosphere. The <10 RE WIND perigee passes during August 2000 afforded a unique opportunity to test and verify the capabilities of radio tomography by measuring interspacecraft electromagnetic wave propagation parameters using the Radio Plasma Imager(RPI) on IMAGE as the transmitter and the WAVES instrument on WIND as the receiver.... We show how changes in the path-integrated electron density/magnetic field product can be unambiguously measured from this continuous, low signal to noise ratio, single frequency measurement.

French

Domaine(s)
  • Mesures à distance (Télécommunications)
  • Ondes radioélectriques

Spanish

Save record 46

Record 47 2002-11-07

English

Subject field(s)
  • Spacecraft
  • Astrophysics and Cosmography
DEF

A satellite that is designed to image the anisotropies of the cosmic background radiation field over the whole sky, with unprecedented sensitivity and angular resolution.

OBS

Planck will provide a major source of information relevant to several cosmological and astrophysical issues, such as testing theories of the early universe and the origin of cosmic structure.

French

Domaine(s)
  • Engins spatiaux
  • Astrophysique et cosmographie
DEF

Satellite élaboré pour cartographier les fluctuations de rayonnement de fond de ciel, sur la totalité de la sphère céleste avec une sensibilité et une résolution angulaire sans précédent.

Spanish

Save record 47

Record 48 2002-11-05

English

Subject field(s)
  • Telecommunications Facilities
CONT

The primary ground station will send the processed data to users via the satellite at a high and a low rate. High Rate Information Transmission(HRIT) will contain the full volume of processed, compressed image data and Low Rate Information Transmission(LRIT) will contain a reduced set at lower resolution. In addition, the Eumetsat Control and Processing Centre, with support from other satellite applications facilities throughout Europe, will extract information from the processed data and turn it into ’products’ of particular use to meteorologists and climatologists, such as wind field diagrams, maps of upper tropospheric humidity and analyses of cloud shape and height.

Key term(s)
  • satellite applications facility

French

Domaine(s)
  • Installations de télécommunications
Key term(s)
  • installation pour applications satellitaires

Spanish

Save record 48

Record 49 2002-07-05

English

Subject field(s)
  • Electrical Engineering
  • Audiovisual Techniques and Equipment
DEF

... another name used for DSP [Digital Sound Processing], applied to a surround sound mode.

OBS

This program is also used for playback of sources encoded with Dolby Surround. Enhancing the "Normal" Dolby Pro Logic, the DSP technology simulates the multi-surround speaker systems of a 35 mm movie theater. This effect creates a wide surround sound field, and expands the sound stage with an improved presence image. This program is used for musical based movies, as well as drama and comedy based movies.

Key term(s)
  • Dolby Pro-Logic Enchanced

French

Domaine(s)
  • Électrotechnique
  • Audiovisuel (techniques et équipement)
CONT

[Dolby Pro Logic Enhanced]. Un grand classique du DSP, avec un décodage Pro Logic habituel, enrichi par un traitement DSP. Ce type d'effet a pour but de stimuler la présence de plusieurs enceintes surround, placées tout autour de l'auditeur. Grâce à des retards et des échos soigneusement orchestrés, le volume surround devient beaucoup plus diffus, tandis que les perspectives sont améliorées. Les voies frontales ne subissent aucun traitement.

Key term(s)
  • Dolby Pro-Logic Enhanced

Spanish

Save record 49

Record 50 2002-07-02

English

Subject field(s)
  • Electrical Engineering
  • Audiovisual Techniques and Equipment
OBS

Yamaha RX-V2095 Natural Sound Home Theater Receiver... The addition of the front effect channel adds depth to the sound image. These effect channels are controlled by Yamaha's Digital Sound Field Processing, Cinema DSP, and Tri-Field Processing.

French

Domaine(s)
  • Électrotechnique
  • Audiovisuel (techniques et équipement)
CONT

Exception faite de la technologie des champs sonores numériques mise au point par Yamaha au début des années 80 - le DSP-1 fut mis en marché en 1986 - et parvenait à recréer les effets d'ambiance d'une multitude de salles de par le monde.

Spanish

Save record 50

Record 51 2002-03-21

English

Subject field(s)
  • Remote Sensing
DEF

The science and techniques involved in using imaging spectrometers.

CONT

Imaging spectrometry... is the field in remote sensing where sensors acquire image data in many, narrow and contiguous wavebands. The aim is to produce on a pixel by pixel basis radiance and reflectance data, which can be used to model physical properties of the Earth surface. This data forms an addition to subsurface geophysical data.

OBS

Imaging spectroscopy has many names in the remote sensing community, including imaging spectrometry, hyperspectral, and ultraspectral imaging. Spectroscopy is the study of electromagnetic radiation. Spectrometry is derived from spectro-photometry, the measure of photons as a function of wavelength, a term used for years in astronomy. However, spectrometry is becoming a term used to indicate the measurement of non-light quantities, such as in mass spectrometry (e.g. Ball, 1995). Hyper means excessive, but no imaging spectrometer in use can hardly be considered hyper-spectral, after all, a couple of hundred channels pales in comparison to truly high resolution spectrometer with millions of channels. Ultraspectral is beyond hyperspectral, a lofty goal that has not yet been reached. ... Researchers at the USGS Spectroscopy Lab are studying and applying methods for identifying and mapping materials through spectroscopic remote sensing (called imaging spectroscopy, hyperspectral imaging, imaging spectrometry, ultraspectral imaging, etc), on the Earth and throughout the solar system using laboratory, airborne and spacecraft spectrometers.

OBS

imaging spectrometry; imaging spectroscopy; hyperspectral imaging: terms officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).

French

Domaine(s)
  • Télédétection
DEF

Utilisation de la radiométrie spectrale pour obtenir des images potentielles ou réelles d'une scène.

OBS

Les dernières découvertes en matière de télédétection (comme l'apparition des appareils de radiométrie spectrale imageante à haute résolution) nous permettent d'acquérir des données plus détaillées sur les écosystèmes des milieux humides, concernant en particulier la forme et les dimensions des zones humides, la portée et la distribution de la végétation des milieux humides, les types de végétation qui s'y trouvent et l'utilisation des terres adjacentes.

OBS

radiométrie spectrale imageante; spectroradiométrie imageante : termes uniformisés par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).

Spanish

Save record 51

Record 52 2002-03-05

English

Subject field(s)
  • Optical Instruments
  • Optics
  • Scientific Instruments
CONT

It is also sometimes necessary to reduce the vertical tilt range by 1-2 degrees to make the picture look normal.

CONT

Auto-switchable, with front panel controls and adjustable vertical tilt, this rugged monitor provides extensive applications in broadcasting, cable, production and video conferencing.

CONT

Enter the horizontal pan-angle(field yaw, range-180 to +180), vertical tilt angle(field pitch, range-90 to 90), and rotation-angle(field roll, range-180 to 180). These angles specify the center position of the Image with respect to the panorama.

CONT

The new helmet mount eliminates "wobbling" and improves the vertical tilt, which is useful when a soldier is lying on the ground.

French

Domaine(s)
  • Instruments d'optique
  • Optique
  • Instruments scientifiques
CONT

Angle de l'élévation. L'angle d'élévation, en degrés. Cet angle correspond à l'inclinaison verticale de la surface de réflexion. Si la surface est inclinée vers le bas, l'angle est négatif. Si elle est inclinée vers le haut, l'angle est positif.

CONT

Inclinaison verticale = 54 degrés.

Spanish

Save record 52

Record 53 1999-12-09

English

Subject field(s)
  • Photography
CONT

A long-focus lens gives a high resolution image over quite a narrow field of view. Its long focal length means that the main lens elements must be mounted at the front of a long tube to be at a sufficient distance from the film to form a sharp image.

French

Domaine(s)
  • Photographie
CONT

Objectifs de longue focale - Leur angle de champ est inférieur ou très inférieur à celui de l'objectif normal. [...] Un objectif de longue focale donne une image dont la perspective - la convergence naturelle des lignes parallèles du sujet - semble moins forte. Les plans du sujet, normalement étagés en profondeur - un paysage, par exemple - paraissent se confondre les uns avec les autres.

Spanish

Save record 53

Record 54 1999-10-22

English

Subject field(s)
  • Optics
DEF

Mode of microscope illumination [first described by A. Köhler] in which the light source is imaged onto the condenser iris diaphram and the field diaphram (in front of the lamp collector lens) is imaged by the condenser onto the plane of focus of the specimen.

CONT

Kohler illumination ... is the most widely used system of illuminating a specimen in photomicroscopy. It is the illuminating system that provides best image quality and illumination.

OBS

With Koehler illumination, the aperture and field can be regulated independently to provide maximum resolution and optimum contrast. Also, a field with uniform illumination is obtained, circumscribed by the image of the field diaphram.

Key term(s)
  • koehler method of illumination

French

Domaine(s)
  • Optique
DEF

En microscopie optique, système permettant d'éclairer l'objet d'une façon uniforme quel que soit le réglage du diaphragme d'ouverture.

Key term(s)
  • éclairage de Koehler
  • système de Koehler
  • méthode de Köhler

Spanish

Save record 54

Record 55 1999-06-16

English

Subject field(s)
  • Molecular Biology
  • Bioengineering
CONT

One of the most important new designs in the field of laser scanning microscopy is Bio-Rad's new multiphoton microscope. The primary benefit of multiphoton or two-photon microscopy is that it can penetrate much deeper into tissue samples, permitting an unobstructed view of cells such as neurons. The way it accomplishes this feat involves an unusual characteristic of light. When two photons hit a fluorophor simultaneously, it's as if one photon of half the wavelength excited the targeted fluorophor. If two photons of infrared light are directed at a particular sample, they will penetrate to a depth of several millimeters and then combine in the focal plane where the photons are most concentrated, reacting as if one photon of blue light hit the sample. The result is a deep tissue image of superior resolution. Although confocal and multiphoton techniques are generally considered to be overlapping technologies, some enthusiastic supporters consider the multiphoton technique a replacement for confocal microscopy.

French

Domaine(s)
  • Biologie moléculaire
  • Technique biologique
CONT

La microscopie multiphotons ou plus précisément deux ou trois photons, peut être considérée comme une évolution de la microscopie confocale [...] Le principe de la microscopie à deux photons consiste à exciter un fluorochrome, non plus au moyen d'un seul photon de haute énergie (E), mais de deux photons dont les énergies sont diminuées de moitié (E/2)[...] la quantité de radicaux libres produits est très nettement réduite. Ce type de microscopie utilise de très courtes émissions de lumière, générées par des lasers infrarouges de puissance élevée.

OBS

Tiré du Technoscope.

Spanish

Save record 55

Record 56 1998-08-18

English

Subject field(s)
  • Artificial Intelligence
  • Applications of Automation
OBS

Pattern Recognition : A field of artificial intelligence, in which image analysis is used to determine whether a particular object or data set corresponds to one of several alternatives or to none at all. The analysis system is provided in advance with the characteristics of several prototype objects so that it can classify an unknown object by comparing it with each of the different prototypes.

French

Domaine(s)
  • Intelligence artificielle
  • Automatisation et applications
CONT

La robotisation, a-t-on observé dans [les pays de l'Europe occidentale], engendre un nouveau type d'usine où se côtoient des machines-outils contrôlés par ordinateur, des chariots autoguidés, des systèmes de reconnaissance des formes (...)

Spanish

Save record 56

Record 57 1997-01-29

English

Subject field(s)
  • Coins and Bank Notes
  • Numismatics
  • Coining
DEF

The thickness of the image on a coin as gauged from the surface or field.

OBS

See related term: device.

French

Domaine(s)
  • Pièces de monnaie et billets de banque
  • Numismatique
  • Monnayage
DEF

Épaisseur du relief d'un motif mesuré à partir du champ de la pièce.

Spanish

Save record 57

Record 58 1995-03-29

English

Subject field(s)
  • Photography

French

Domaine(s)
  • Photographie

Spanish

Campo(s) temático(s)
  • Fotografía
Save record 58

Record 59 1994-07-15

English

Subject field(s)
  • Artificial Intelligence
DEF

Application of gray scale structuring elements to filter a gray scale image, usually to enhance surface flaws in an object in the field of view of the camara.

French

Domaine(s)
  • Intelligence artificielle
OBS

Projet de norme ISO sur la visionique.

Spanish

Save record 59

Record 60 1994-07-15

English

Subject field(s)
  • Artificial Intelligence
DEF

Technology which couples video cameras and computers to inspect various items or parts for a variety of reasons.

OBS

The part to be inspected is positioned in the field of view of the camera. The image of the part is first digitized by the computer memory. Significant features of the stored image are then "compared" with the same features of a known good part which has been previously placed in computer memory. Any difference between the corresponding characteristics of the two parts will be either within a tolerance and hence good, or out of tolerance and therefore bad.

French

Domaine(s)
  • Intelligence artificielle
OBS

Projet de norme ISO sur la visionique.

Spanish

Save record 60

Record 61 1991-10-08

English

Subject field(s)
  • Neology and Linguistic Borrowing
DEF

One who seeks to invest in property that has dropped to bottom prices and waits for a market rebound to make a profit through lease or sale.

CONT

Bottom-fishers such as Russo and Mendik seek to divine when the market has hit its low point, so they can buy, and when it is well on the way toward recovery, so they can sell or boost rents.

OBS

The term "bottom-fisher" is formed by changing the suffix in the term "bottom-fishing" from "ing" to "er". Since the suffix "er" means "one that does or performs"(Webster's Ninth New Collegiate Dictionary, 1989), a "bottom-fisher" does fishing at or near the bottom of the sea or river(bottom-fishing). In the field of real estate, "bottom-fisher" is used in a figurative sense to convey the image of a person fishing for bargains near the bottom of the market.

French

Domaine(s)
  • Néologie et emprunts
OBS

Nous proposons le terme «pêcheur à la ligne de fond» puisque «bottom-fishing» se rend en français par «pêche à la ligne de fond».

Spanish

Save record 61

Record 62 1986-10-07

English

Subject field(s)
  • Aircraft Piloting and Navigation
DEF

A sextant used especially in aerial navigation in which the image of the heavenly body being observed is brought to the edge of a bubble instead of to the sea horizon, the bubble appearing in its proper position in the field of view only when the sextant is held so that its zero plane is the observer's horizontal plane.

French

Domaine(s)
  • Pilotage et navigation aérienne
CONT

Si la précision moyenne du sextant de marine est de l'ordre de la minute (...) celle du sextant à bulle ne dépasse guère 10' (point fait à 15 km près environ).

Spanish

Save record 62

Record 63 1986-02-25

English

Subject field(s)
  • Scientific Measurements and Analyses
  • Thermal Insulation
CONT

Non-measuring Imaging System. This type of instrument is a device which creates a two-dimensional thermal image by receiving the total spectral band radiance from a specific field of view.

French

Domaine(s)
  • Mesures et analyse (Sciences)
  • Isolation thermique

Spanish

Save record 63

Record 64 1986-02-25

English

Subject field(s)
  • Scientific Measurements and Analyses
  • Thermal Insulation
CONT

Non-measuring Imaging System. This type of instrument is a device which creates a two-dimensional thermal image by receiving the total spectral band radiance from a specific field of view.

French

Domaine(s)
  • Mesures et analyse (Sciences)
  • Isolation thermique

Spanish

Save record 64

Record 65 1985-12-16

English

Subject field(s)
  • Micrographics
DEF

those properties of an optical system such as field of view, magnification, brightness of image, image quality and correction for aberrations.

French

Domaine(s)
  • Micrographie
DEF

propriété d'un système optique: champ de visée, grossissement, luminance de l'image, qualité de l'image et correction des aberrations.

Spanish

Save record 65

Record 66 1985-10-24

English

Subject field(s)
  • Photography
CONT

The vertical swing front [of a view camera] is used to focus and increase the depth of field when the vertical swing back is set off centre. When the vertical swing back is tilted away from centre, the film plane is not parallel to the image produced by the lens.

French

Domaine(s)
  • Photographie

Spanish

Save record 66

Record 67 1985-10-01

English

Subject field(s)
  • Non-impact Printing
  • Computer Peripheral Equipment
CONT

A printer that forms the required image by projecting droplets of ink onto the paper.

CONT

This principle makes use of electrically charged droplets of ink whose sensitivity to the electric field towards which they are fired causes the image of the character to be printed...(RALEN, 1983, p. 1164).

French

Domaine(s)
  • Impression sans impact
  • Périphériques (Informatique)
CONT

Les caractères et dessins sont donc constitués par l'assemblage des points constitués par les gouttes d'encre qui ont atteint le papier.

CONT

Quand un point doit être imprimé, une onde de choc est créée par un transducteur piézo-électrique qui propulse la goutte d'encre vers le papier.

Spanish

Save record 67

Record 68 1981-11-17

English

Subject field(s)
  • Aeroindustry
CONT

Matra Optique is now marketing, in the field of photogrammetry, the Traster analytical stereo-plotter, which is the combination of a stereo comparator with a computer system. According to the company, this offers the following advantages : capability to exploit any type of exposure at all focal lengths and in any image format; correction of distortion of all sorts; capability for plotting, directly from the computer, the data extracted from stereo imagery or additional graphical information; a high degree of operator comfort; simultaneous image observation by several operators; and significant increases in productivity and profit, due to the higher data yield.

French

Domaine(s)
  • Constructions aéronautiques
CONT

Pour le domaine de la photogrammétrie, la société Matra offre le stéréorestituteur analytique Traster, appareil qui est un stéréocomparateur associé à un ordinateur et qui, selon son fabricant, offre les principaux avantages ci-après: exploitation des clichés de toute focale et de tout format; correction des distorsions de toute nature; possibilité d'utilisation pour restitution graphique ou numérique; grand confort de l'opérateur; possibilité d'observation du modèle simultanément par plusieurs opérateurs; accroissement notable de la productivité et de la rentabilité.

Spanish

Save record 68

Record 69 1979-12-10

English

Subject field(s)
  • The Sun (Astronomy)
CONT

The Culgoora radioheliograph, commissioned in 1967, was initially designed to operate at a frequency of 80 MHz. Scanning a north-south line of points across a field of view of approximately 2 E-W X 1. 6 N-S yields a two-dimensional image of the solar corona once per second.(...) Here we report the addition of a second operating frequency, 160 MHz, for the radioheliograph and work in progress to add a third frequency, 43. 25 MHz.

OBS

heliograph: an instrument for recording the duration and intensity of sunshine.

French

Domaine(s)
  • Soleil (Astronomie)
CONT

[Le] radiohéliographe étudiera la structure de la couronne solaire et ses variations d'homogénéité, ainsi que ses relations avec le milieu interplanétaire.

OBS

héliographe: Instrument servant à mesurer la durée de l'insolation (...)

Spanish

Save record 69

Record 70 1977-05-19

English

Subject field(s)
  • Mineralogy
OBS

The polarizing microscope may be assembled either for orthoscopic or conoscopic observation. The orthoscopic arrangement provides the eye with a realistic virtual image with a flat field showing the object on the microscope stage.

French

Domaine(s)
  • Minéralogie
OBS

(...) l'examen est appelé "orthoscopique" quand le faisceau des rayons frappant la lame cristalline est approximativement parallèle, sans utilisation du condensateur et de la lentille de Bertrand.

Spanish

Save record 70

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