ESTIMATION DE DISPARITÉ À PARTIR D'UNE IMAGE GRAND ANGLE

摘要

An apparatus a receiver (201) which receives a wide angle image with a first projection where a vertical image position of a scene position depends on a horizontal distance from the scene position to an optical axis for the image. Thus, the vertical image position of the scene point may depend on the horizontal image position. A mapper (203) generates a modified image having a modified projection by applying a mapping to the first wide angle image corresponding to a mapping from the first projection to a perspective projection followed by a non-linear vertical mapping from the perspective projection to a modified vertical projection of the modified projection and a non-linear horizontal mapping from the perspective projection to a modified horizontal projection of the modified projection. A disparity estimator (205) generates disparities for the modified image relative to a second image and representing a different view point than the first wide angle image.