TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

PARALLAX DIFFERENCE [4 records]

Record 1 2002-03-08

English

Subject field(s)
  • Photography
DEF

The difference in displacement of the top of an object in relation to its base, as measured on the two images of the object on a stereo pair of photographs.

OBS

parallax difference : term and definition standardized by NATO.

French

Domaine(s)
  • Photographie
DEF

Déplacement apparent du sommet d'un objet par rapport à sa base, observé sur les images de cet objet obtenues par un couple stéréoscopique.

OBS

différence de parallaxe : terme et définition normalisés par l'OTAN.

Spanish

Campo(s) temático(s)
  • Fotografía
DEF

Diferencia de desplazamiento de la parte superior de un objeto respecto a su base, medido en dos imágenes de un objeto en un par estereoscópico fotográfico.

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Record 2 2002-01-10

English

Subject field(s)
  • Remote Sensing
CONT

The ability of the human eye and brain to interpret differences in the perspective of two images as depth is called the stereo effect. The three-dimensional stereo image is called a stereomodel. When looking vertically down at the landscape, one can perceive differences in the heights of features, which gives a three-dimensional view. The strength of this stereo effect depends on the magnitude of the difference, called the parallax, in the two views. The closer the objects are to the camera(i. e., the taller they are), the more different are their relative positions within the image and the closer we perceive them to be. By measuring the parallax and knowing the specifications of the camera and the flying height, the elevation of features in the image can be calculated.

OBS

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

French

Domaine(s)
  • Télédétection
DEF

Image tridimensionnelle, géométriquement semblable à l'objet photographié, qui apparaît sur un appareil de restitution lors d'un examen stéréoscopique par l'opérateur, et sur laquelle ce dernier effectue les mesures.

OBS

Le «modèle» résulte de l'orientation relative, sur l'appareil, des deux gerbes perspective reconstituées à partir de deux clichés formant un couple de clichés stéréoscopiques; il représente l'ensemble des points d'intersection des rayons homologues de ces deux gerbes perspectives.

OBS

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

PHR

Image stéréoscopique SAR.

Spanish

Save record 2

Record 3 2000-02-02

English

Subject field(s)
  • Mathematical Geography
  • Optics
DEF

The difference between two absolute parallax values. Customarily used in determination of the difference in elevation(e. g., height) of objects.

French

Domaine(s)
  • Géographie mathématique
  • Optique
DEF

Différence des parallaxes linéaires de deux points situés sur une photographie.

CONT

La parallaxe stéréoscopique dite différentielle (différence entre deux mesures de parallaxe absolue) devient très utile dans le calcul de la hauteur des édifices, d'un arbre ou d'une élévation quelconque.

Spanish

Save record 3

Record 4 1985-06-17

English

Subject field(s)
  • Range Measurements (Telecommunications)

French

Domaine(s)
  • Mesures à distance (Télécommunications)

Spanish

Save record 4

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