Research and Improvement of the Marking Block in the PMVFAST Algorithm

With regard to video signal processing, the method of predictive encoding involves motion estimation and compensation. This article shows that we can increase the efficiency of motion estimation in the Predictive Motion Vector Field Adaptive Search Technique algorithm by precluding the inter4v mode in advance. Its main contribution is to adopt the special statistics characteristics of the random variable SAD under the conditional probability. Some related experimental results are given and compared with traditional methods. Results show that the optimization algorithm saves lots of time and almost does not change PSNR.