The Modified Traditional Motion Compensation Method in Video Compression Applications

This paper is dedicated to the research and development of the modified traditional motion compensation method. The paper proposes a new motion compensation method with the use of approximation functions with additional parameters. For applying the considered approximation functions in the considered wavelet-based video codec Dirac, the subtasks associated with the accuracy and the transmission method of additional parameters have been solved. Based on the processing results of different video with the approximation functions studied, the best suitable function has been chosen. Compared with the traditional motion compensation method, the usage of the proposed method in the considered video codec can reduce bitrate up to 20% for good reconstruction quality PSNR = 40 dB and up to 33.5% for excellent quality PSNR = 42 dB for frame splitting case 16x16. In the case of block size $32\times32$, the proposed method can reduce bitrate from 3% to 35% for quality PSNR = 40 dB and from 2% to 40% for quality PSNR = 42 dB.