Patent · US Active

Adaptive offset for variance based quantization

US11563945B2 · kind B2 · utility

0Cited by

0References

20Claims

0Family size

Assignees

Advanced Micro Devices, Inc. · US
ATI Technologies ULC · CA

Inventors

Jiao Wang · Munich, DE
Ying Zhang · Nanjing, CN
Richard E. George · Everett, US
Edward A. Harold · Scarborough, CA
Zhenhua Yang · Chengdu City, CN

Key dates

Filing date	Sep 30, 2019
Grant date	Jan 24, 2023
Priority date	—
Expiry date	Sep 30, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH04N19/198
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A technique for determining an adaptive quantization parameter offset for a block of encoded video includes obtaining a rate control factor for the quantization parameter, determining a content-based quantization parameter factor for the quantization parameter, determining an adaptive variance based quantization offset based on content-based quantization parameter factors for a frame prior to the current frame, and combining the rate control factor, the content-based quantization parameter factor, and the adaptive offset to generate the quantization parameter.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.