arXiv.org
A Rate-Distortion Optimized Skip Mode Coding Framework for Neural Video Compression in AVS
With the development of deep learning, neural video compression (NVC) is gaining increasing interest and is currently under standardization in the AVS (Audio Video Coding Standard). Skip mode coding, a crucial component in the traditional video compression, is also adopted in AVS NVC. Although the skip mode takes a large portion in encoding the motion and residual features in the NVC, there is a lack of investigation on the rate distortion performance of the skip mode coding. In this paper, we first thoroughly investigate the rate and distortion distribution in the skip mode coding within a spatial frame and under different temporal reference qualities, and demonstrate that distortion distribution changes spatially and temporally. Therefore, a rate-distortion optimized skip mode coding (RDOSkip) framework is proposed, where the rate and distortion in the skip mode coding is formulated based on a statistical distribution predicted by the hyperprior and the Bayes' theorem. An adaptive sk
