Zte corporation (20250008126). CROSS-COMPONENT QUANTIZATION IN VIDEO CODING
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CROSS-COMPONENT QUANTIZATION IN VIDEO CODING
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CROSS-COMPONENT QUANTIZATION IN VIDEO CODING
This abstract first appeared for US patent application 20250008126 titled 'CROSS-COMPONENT QUANTIZATION IN VIDEO CODING
Original Abstract Submitted
a video decoding technique includes parsing a bitstream to determine a quantization parameter (qp) for a luma component of a region from a data unit of a parameter set included in the bitstream, determining a flag from the data unit of the parameter set, determining, in a case that the flag is equal to a first value, a qp for a chroma component of the region as a first function of the qp for the luma component and a default chroma delta qp indicated by the flag, determining, in a case that the flag is equal to a second value, the qp for the chroma component of the region by (a) obtaining a delta chroma qp from the data unit, and (b) determining the qp for the chroma component as a second function of the qp for the luma component and the delta chroma qp, and decoding the chroma component using the qp for the chroma component in a case that the parameter set is activated for decoding the region.
