Patent ID: 11882301
Assignee: TENCENT AMERICA LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 16:
17. A non-transitory computer-readable medium storing instructions, the instructions comprising: one or more instructions that, when executed by one or more processors of a device for video decoding, cause the one or more processors to:
obtain video data including a syntax element indicating a quantization index;
parse the syntax element to determine the quantization index;
add an offset value to the quantization index;
obtain a quantization step size from a lookup table based on the quantization index and the offset value; and
decode the video data based on the quantization step size,

wherein based on the quantization index being smaller than a threshold value, the quantization step size based on a linear mapping with the quantization index and the offset value, and
wherein based on the quantization index being larger than the threshold value, the quantization step size based on an exponential mapping with the quantization index and the offset value.