Patent ID: 8373796
Filing Date: 2013-02-12
Classification: G06T,H04N

Abstract:
1. A method of detecting occlusion areas in a sequence of video frames comprising a current frame, a first previous frame and a second previous frame, each frame comprising a plurality of blocks, the method comprising: estimating a forward motion vector field for the first previous frame between blocks in the first previous frame and the current frame; estimating a backward motion vector field for the first previous frame between blocks in the first previous frame and the second previous frame; generating forward match errors between blocks in the first previous frame and blocks in the current frame corresponding with the forward motion vector field; generating backward match errors between blocks in the first previous frame and blocks in the second previous frame corresponding with the backward motion vector field; identifying blocks in the first previous frame for which the forward match error is greater than the backward match error as covering occlusion areas; and identifying blocks in the first previous frame for which the backward match error is greater than the forward match error as uncovering occlusion areas.