Analysis of Palette Mode on Versatile Video Coding

摘要

The next generation video compression standard, Versatile Video Coding (VVC), is being developed by the ITU-T/ISO/IEC Joint Video Experts Team (JVET). Screen content coding is one of the target applications of the new standard. Palette mode has been investigated in the previous standard, High Efficient Video Coding Screen Content Coding Extension (HEVC-SCC), and can efficiently compress color clusters in screen content. This paper evaluates the palette mode on VVC. With the proposed modifications, the palette mode can achieve 33.1%, 16.6%, and 8.8% BD-rate saving for "YUV, text & graphics sequences" under all intra (AI), random access (RA), and low-delay B (LB) common test conditions, respectively.