Patent ID: 8249142
Filing Date: 2012-08-21
Classification: H04N

Abstract:
1. A method of video encoding comprising: transforming at least a portion of a high-resolution video frame into a low resolution image and a plurality of enhancement data sets; encoding the low resolution image as a primary coded picture; and encoding, using a redundant encoding technique, each of the plurality of enhancement data sets as different coded pictures; wherein the transforming comprises: wherein the number of phases is four, wherein the four pixels in each pixel phase group are identified as pixels (0,0), (0,1), (1,0), and (1,1), wherein the pixels (0,0) and (1,1) are positioned diagonally, and wherein the averaging function determines the value of each low resolution pixel as being equal to the mean of the value of a pixel of the (0,0) phase (the particular phase) and a predictor, y, wherein the predictor, y, is determined from the pixels in the same pixel phase group as the pixel of the particular phase, as follows: