Title :
Subjective and Objective Comparison of Advanced Motion Compensation Methods for Blocking Artifact Reduction in a 3-D Wavelet Coding System
Author :
Cheng, Cho-Chun ; Hwang, Wen-Liang ; Shen, Zuowei ; Xia, Tao
Author_Institution :
Inst. of Inf. Sci., Taipei
Abstract :
We compare, both objectively and subjectively, the performance of various advanced motion compensation methods, including overlapped block motion compensation (OBMC) and control grid interpolation (CGI), in a 3-D wavelet-based coding system. The motion vectors of the methods are obtained by using a sequence of 1-D dynamic programming algorithms that minimizes the cost function. Our experiment results indicate that an OBMC sequence usually has a higher peak signal-to-noise ratio (PSNR) than other methods, while a CGI sequence usually contains the fewest blocking artifacts. We provide a simple framework that combines the OBMC and CGI sequences. The proposed hybrid method removes more than 50% of the blocking artifacts of an OBMC sequence, while simultaneously maintaining a high PSNR performance
Keywords :
dynamic programming; interpolation; motion compensation; video coding; wavelet transforms; 1D dynamic programming algorithms; 3D wavelet coding system; advanced motion compensation methods; blocking artifact reduction; control grid interpolation sequence; motion vectors; overlapped block motion compensation; peak signal-to-noise ratio; Control systems; Discrete wavelet transforms; Dynamic programming; Interpolation; Iterative algorithms; Motion compensation; Motion control; Motion estimation; PSNR; Video coding; Control grid interpolation (CGI); overlapped block motion compensation (OBMC); wavelet transform;
Journal_Title :
Circuits and Systems for Video Technology, IEEE Transactions on
DOI :
10.1109/TCSVT.2006.879993