TERMIUM Plus®

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EPIPOLAR POINT [2 records]

Record 1 2016-08-19

English

Subject field(s)
  • Optics
  • Cartography
CONT

Since the optical centers of the cameras lenses are distinct, each center projects onto a distinct point into the other camera's image plane. These two image points are denoted by eL and eR and are called epipoles or epipolar points.

French

Domaine(s)
  • Optique
  • Cartographie
OBS

épipôle, épipole : Bien qu'on trouve dans plusieurs sources la seconde graphie, il vaut mieux choisir la première; le terme pôle pouvant désigner «deux points principaux et opposés» tandis que le suffixe -pole signifie en grec «ville» et sert plutôt à construire des termes tels que acropole, métropole, etc.

Spanish

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Record 2 2007-01-31

English

Subject field(s)
  • Remote Sensing
DEF

A technique used in image restoration, enhancement or coding [that is] a separable orthogonal transform or an expansion of the matrix in rank-1 matrices.

CONT

This paper presents a simple and effective method for matching two uncalibrated images. Corner points are firstly extracted as interest points in the two images. Each interest point is assigned one dominant orientation. The initial set of point matches is then obtained by singular value decomposition of a correspondence strength matrix. A new expression of this matrix is introduced to handle more complicated imaging conditions. Each element of this matrix is the similarity measure between two interest points. The new similarity measure is invariant to image rotation by taking into account the dominant orientation of the two interest points. The epipolar geometry constraint is finally imposed to reject the false matches. Experimental results on real images show this approach to be effective for general image matching.

OBS

single value decomposition; SVD: term and abbreviation officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).

French

Domaine(s)
  • Télédétection
DEF

Technique puissante d'analyse et de traitement matriciel qui exhibe les propriétés géométriques de la matrice.

OBS

décomposition en valeurs singulières; DVS : terme et abréviation uniformisés par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).

Spanish

Campo(s) temático(s)
  • Teledetección
CONT

Por este motivo, se ha desarrollado un modelo estadístico de predicción, que tiene como núcleo la descomposición en valores singulares de una matriz. Esta técnica produce pares de patrones que explican la máxima covarianza entre dos campos.

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