Patent ID: 6757330
Filing Date: 2004-06-29
Classification: H04N

Abstract:
A half pixel motion estimation and reconstruction method of the type wherein a block from a current video frame is compared with a selected interpolated reference video image, comprising:creating an interpolated reference image with half pixel accuracy from a reference video data frame before coding; calculating four half-pixel values for the interpolated reference image by using bilinear interpolation methods based on pixel position; partitioning the calculated interpolated reference image pixels in four areas and storing the partitioned interpolated reference image pixels in four separate buffer memory areas; searching within the interpolated reference image to obtain a best interpolated match block for a current video block which is being estimated, by applying a vector to the current video block; ensuring that the current video block and said best match have similar pixel positions; completing motion estimation by calculating a block error as a result of said step of searching; and reconstructing an estimated video data frame by assembling estimated video data without having to skip pixels.