Patent ID: 11909974
Assignee: INTERDIGITAL VC HOLDINGS, INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. A device comprising:
a non-transitory computer readable medium storing a plurality of pre-determined chroma quantization parameters tables; and
one or more processors configured to:
access metadata for a block of an image or video, said metadata comprising a high-level syntax flag representative of an encoding performance level;
select a chroma quantization parameters table from amongst the plurality of pre-determined chroma quantization parameters tables based on the high-level syntax flag representative of the encoding performance level;
de-quantize chroma values of the block using at least one value of the selected chroma quantization parameters table; and
produce a reconstructed image based on the de-quantized chroma values of a plurality of blocks of the image.