PALETTE INDEX BINARIZATION FOR PALETTE-BASED VIDEO CODING

摘要

An example method of coding video data includes determining, for a current block of video data, a palette that includes a plurality of entries that each corresponds to a respective color value; determining a particular entry in the palette that is predicted to correspond to a color value of a current pixel of the current block; selecting a binarization from a plurality of binarizations; and coding, using the selected binarization, an index that indicates which entry in the palette corresponds to a color value for a current pixel of the current block, wherein coding the index using a first binarization of the plurality of binarizations comprises coding a syntax element that indicates whether the index is equal to the particular entry, and wherein coding the index using a second binarization of the plurality of binarizations comprises coding the index using a variable length code without coding the syntax element.

主权项

1. A method of coding video data, the method comprising:
determining, by a video coder and for a current block of video data, a palette that includes a plurality of entries that each corresponds to a respective color value; determining, by the video coder, a particular entry in the palette that is predicted to correspond to a color value of a current pixel of the current block of video data; selecting, by the video coder, a binarization from a plurality of palette index binarizations; and coding, by the video coder and using the selected binarization, a palette index that indicates which entry in the palette corresponds to a color value for a current pixel of the current block of video data, wherein coding the palette index using a first binarization of the plurality of palette index binarizations comprises coding a syntax element that indicates whether the palette index is equal to the particular entry, and wherein coding the palette index using a second binarization of the plurality of palette index binarizations comprises coding the palette index using a variable length code without coding the syntax element.