Patent ID: 6987810
Filing Date: 2006-01-17
Classification: H04N

Abstract:
1. A video decoding method comprising: storing a decoded image of a reference frame; and synthesizing a predicted image of a present frame by using said decoded image and the information related to said present frame, wherein said predicted image synthesizing comprises: calculating motion vectors of 3 representative points having coordinates (i,j), (i+p,j), and (i,j+p) using motion vectors of corner points of said predicted image having coordinates (0,0), (r,0), and (0,s), where r, s, i, and j are integers, p and q are integer powers of 2, p is greater than or equal to r, p/2 is less than r, q is greater than or equal to 5, q/2 is less than s, and the sampling intervals of pixels are 1 in both horizontal and vertical directions; calculating the motion vector of each pixel in said predicted image from said motion vectors of said representative points; and synthesizing said predicted image from said motion vector of each pixel and said decoded image.