Method and Apparatus for Syntax Signaling in Image and Video Compression

摘要

A method and apparatus of coding using multiple coding modes with multiple color spaces are provided. For the encoder side, a coding mode is selected from a coding mode group. A corresponding color domain is associated with the coding mode and the corresponding color domain is selected from a color-domain group including at least two different color domains. The current coding unit is then encoded in the corresponding color domain using the coding mode. Furthermore, the syntax of the corresponding color domain is signaled in current coding unit syntaxes. The different color domains may include RGB color domain and YCoCg color domain. According to another method, if the midpoint prediction (MPP) mode is selected, a current block is color transformed into another color domain and the MPP coding process is performed in said another color domain.

主权项

1. A method of video encoding using multiple coding modes with multiple color spaces, the method comprising:
receiving input pixels of a current coding unit in a current image unit, wherein the current image unit is divided into multiple coding units; selecting a coding mode from a coding mode group, wherein a corresponding color domain is associated with the coding mode and the corresponding color domain is selected from a color-domain group comprising at least two different color domains; encoding the current coding unit in the corresponding color domain using the coding mode; and signaling syntax of the corresponding color domain in current coding unit syntaxes.