MATLAB SIMULATION OF HYBRID MOTION ESTIMATION ALGORITHM FOR H.264/AVC

The virtual role of science and technology in modern life demands compression in
multimedia applications, as it involves transfer a large amount of data. Motion
estimation is one of the most important and complex block of all the existing video
coding standards. In the new video coding standard H.264/AVC, motion estimation is
allowed to search multiple reference frames. In H.264/AVC video coding standard ME
process is much more complex due to variable block size with quarter pixel accuracy.
therefore, efficient motion estimation algorithm are required to reduce the
computational complexity. In H.264/AVC video coding standard are required
computation is highly increased, but frequently a lot of computation is wasted without
achieving any better coding performance. the New Modified Small Cross Diamond
Search algorithm is suitable for stationary, quasi-stationary and fast moving video sequences and computationally less complex. The results show that the proposed algorithm requires very few number of search points for finding the best matched block with almost negligible loss in video quality. As compared to the fastest existing ME algorithm. the proposed algorithm achieved 9.02% less number of search computations with less time and also be calculated in 0.007dB PSNR. Simulation Motion Estimation Algorithm is done by using MATLAB.