METHODS FOR PALETTE SIZE SIGNALING AND CONDITIONAL PALETTE ESCAPE FLAG SIGNALING

摘要

A method for palletizing image and video data to avoid problems associated with a zero size palette and to improve performance by conditionally signaling a CU (coded unit) - level escape pixel presence flag is disclosed. In one embodiment, the size information about the palette size of the current palette table of the current CU is conditionally signaled based on the escape indication flag, where the escape indication flag includes any sample Is displayed. In another embodiment, the CU-level escape pixel presence flag is conditionally signaled according to the current palette size, or according to both the predicted palette size and the new palette size. Conditionally signaling the palette share flag may also be based on the palette share flag.