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IMAGE AMPLITUDE [7 records]

Record 1 2023-12-14

English

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

If a plane-wave reference is used for recording and for reconstruction, then the reconstructed image will coincide with the magnified image of the object in amplitude, although the phase will contain the curvature due to the imaging lens. Alternatively, holographic interference of the object and the plane-wave reference can be formed first and its magnified image projected near the hologram plane...

French

Domaine(s)
  • Optique
  • Infographie
  • Photographie

Spanish

Save record 1

Record 2 2022-05-31

English

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

The image recorded on the holographic plate is called a hologram of the target, which carries both the amplitude and phase of the returned, scattered beam from the target. The first exposure of the holographic plate by the reference beam results in a reference hologram, while the second exposure by the returned beam imposes all changes of the target to the reference hologram.

French

Domaine(s)
  • Optique
  • Infographie
  • Photographie

Spanish

Save record 2

Record 3 2013-08-26

English

Subject field(s)
  • Geological Prospecting
  • Geological Research and Exploration
DEF

A method of displaying seismic data in which the darkness of the image is proportional to the signal amplitude.

French

Domaine(s)
  • Prospection géologique
  • Recherches et prospections géologiques

Spanish

Save record 3

Record 4 2002-11-13

English

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

The interferometric SAR(InSAR) technique has emerged as a precise approach to the extraction of high-resolution elevation data and measurement of small surface motion based on the phase information derived from the complex radar images. SAR interferometry combines complex radar signals recorded by the antenna at a slightly different location to measure the phase differences between the complex radar images.... Amplitude image of one single look complex image in the InSAR pair.

French

Domaine(s)
  • Télédétection
  • Radar, radioguidage et radiogoniométrie
DEF

Image produite par une seule impulsion de l'instrument radar.

Spanish

Save record 4

Record 5 2000-12-20

English

Subject field(s)
  • Optical Instruments
CONT

The Positron Microscope was designed and built to be a hybrid instrument capable of performing several types of positrons and electron microscopy. For both electrons and positrons the microscope can be run in one of two modes : magnifying mode in which particles leaving the target are focussed onto a CEMA plate assembly to form a magnified image and scanning mode in which the amplitude of a signal is recorded as a function of the position(and possibly energy) of the incident beam. As an electron microscope the instrument will be able to operate in both magnifying and scanning(SEM) modes. As a positron microscope, however, source considerations will limit its immediate use to magnifying mode, i. e. positron reemission microscopy.

Key term(s)
  • position microscope
  • positonic microscope
  • positronic microscope

French

Domaine(s)
  • Instruments d'optique
CONT

De même dans le microscope «positonique», l'image sera formée grâce aux positions qui traversent la matière sans être diffusés par les atomes.

Key term(s)
  • microscope positronique

Spanish

Save record 5

Record 6 1996-09-04

English

Subject field(s)
  • Television (Radioelectricity)
CONT

The process of breaking down the scene into picture elements and reassembling them on the screen of the television receiver is known as scanning.

CONT

With scanning, a number of nearly horizontal passes are made across the image. With each pass across the image, the light reflected by the image is converted into an electrical signal, the instantaneous amplitude of which represents the reflected light energy.

French

Domaine(s)
  • Télévision (Radioélectricité)
DEF

Déplacement commandé d'un spot sur l'écran d'un tube cathodique.

Spanish

Save record 6

Record 7 1991-04-25

English

Subject field(s)
  • Computer Graphics

French

Domaine(s)
  • Infographie

Spanish

Save record 7

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