G - Physics – 06 – T
Patent
G - Physics
06
T
G06T 7/00 (2006.01)
Patent
CA 2394341
A method is provided for deriving three-dimensional camera viewpoint information from a two-dimensional video image of a three-dimensional venue captured by a camera. The method includes the steps of identifying a two dimensional geometric pattern in the two-dimensional video image, measuring the two-dimensional geometric pattern, and calculating the three-dimensional camera viewpoint information using the measurements of the two-dimensional geometric pattern. The two-dimensional geometric pattern may be an ellipsye that corresponds to a circle in the three-dimensional venue, such as the center circle in a soccer field. The three-dimensional camera viewpoint information is provided to a tracking program, which uses the information to track the two-dimensional geometric pattern, or other objects, in subsequently- captured video images.
L'invention concerne un procédé permettant de dériver des informations de points de vue en 3D d'une caméra à partir d'une image vidéo en 2D d'un lieu en 3D capturé par la caméra. Le procédé consiste à identifier un motif géométrique en 2D dans l'image vidéo en 2D, mesurer ledit motif et calculer les informations de points de vue en 3D de la caméra au moyen de mesures du motif géométrique en 2D. Ce dernier peut être une ellipse qui correspond à un cercle dans le lieu en 3D, tel qu'un cercle central d'un terrain de football. Les informations de points de vue en 3D de la caméra sont fournies à un programme de localisation qui utilise les informations pour localiser le motif géométrique en 2D ou d'autres objets, dans des images vidéo capturées postérieurement.
Kennedy Howard J. Jr.
Tan Yi
Mbm & Co.
Princeton Video Image Inc.
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