Moving image encoding method in personal computer, involves updating threshold value of next frame, based on number of search points of current frame, when search for motion vectors of macro block is terminated

摘要

The sum of absolute difference (SAD) of candidate motion vectors of a moving image is compared with a threshold value of a previous frame. The search for the motion vectors of macro block is terminated, when the SAD of each candidate motion vector is smaller than the threshold value. The threshold value with respect to the next frame is updated, based on number of the search points per macro block of the current frame. Independent claims are also included for the following: (1) apparatus to encode moving image; and (2) computer-readable storage medium storing instructions for controlling computer to estimate motion of moving image.