determination of quantization parameter values (qp) and delta values qp for color palette coded blocks in video coding

摘要

Techniques are described for color palette-based video coding. In color palette-based coding, a video encoder may form a so-called "color palette", such as a color table for representing video data of a given block of video data. Instead of encoding actual pixel values or their residues into the data block, the video encoder may encode index values for one or more of the pixels. Index values map pixels to entries in the color palette representing the colors of pixels. Techniques are described for determining the application of deprotection filtering for color block palette coded block pixels to a video encoder or video decoder. In addition, techniques are described for determining the quantization parameter values (qp) and delta qp values used to quantify the escape pixel values of coded blocks from the color color palette in the video encoder or video decoder. .