Patent · US Active

Deblocking filter for sub-partition boundaries caused by intra sub-partition coding tool

US11122299B2 · kind B2 · utility

3Cited by

6References

30Claims

0Family size

Assignee

Huawei Technologies Co., Ltd. · CN

Inventors

Biao Wang · Lo Wu, CN
Anand Meher Kotra · Munich, DE
Semih Esenlik · Munich, DE
Han Gao · San Diego, US
Jianle Chen · San Diego, US

Key dates

Filing date	Aug 14, 2020
Grant date	Sep 14, 2021
Priority date	—
Expiry date	Aug 14, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH04N19/86
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

It is provided a deblocking method, for deblocking a sub-partitions boundary within a coding block in image encoding and/or image decoding. The current coding block is coded in an intra prediction mode and the current coding block is partitioned into sub-partitions comprising a first sub-partition and a second sub-partition which is adjacent to the first sub-partition. The method comprises: determining a maximum filter length to be 1 for a first/second sub-partition when a width of the first or second sub-partition is 4 samples, or when a height of the first or second sub-partition is 4 samples; modifying a value of up to one sample of the first or second sub-partition, wherein the up to one sample is obtained from a row or a column of the first or second sub-partition that is perpendicular to and adjacent to the sub-partitions boundary between the first sub-partition and the second sub-partition.

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