Title:
適応ループフィルタ処理のための仮想境界処理
Document Type and Number:
Japanese Patent JP7180001
Kind Code:
B2
Abstract:
A method for encoding or decoding an image. The method includes obtaining a coding tree block (CTB) having a vertical size (CtbSizeY) and a horizontal size (CtbSizex), the CTB comprising set of sample values associated with the image, the set of sample values comprising a current sample value having a location (x,y) within the CTB, where x is a horizontal value and y is a vertical value. The method also includes selecting a filter strength value for the current sample based on y and filtering the current sample using the selected filter strength value. Selecting a filter strength value for the current sample based on y comprises: i) determining whether the following first condition is true: (y==(CtbSizeY−5) OR y==(CtbSizeY−4)) AND var==1, where var is a variable that is set equal to 1 as a result of a determination that a second condition is satisfied; and ii) choosing a filter strength value of 10 as a result of determining that the first condition is true.
Inventors:
Andersson, Kennet
Strem, Jacob
Chan, Ji
Enhorn, Jack
Strem, Jacob
Chan, Ji
Enhorn, Jack
Application Number:
JP2021539897A
Publication Date:
November 29, 2022
Filing Date:
November 26, 2020
Export Citation:
Assignee:
Telef on Acty Bora Get LM Ericsson (Pable)
International Classes:
H04N19/117; H04N19/167; H04N19/176; H04N19/82
Domestic Patent References:
| JP2013118605A |
Foreign References:
| US20170324962 | ||||
| US20130272624 | ||||
| US20130044809 |
Other References:
Ching-Yeh Chen et al.,CE5-1: Adaptive loop filter with virtual boundary processing,Joint Video Experts Team (JVET) of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11,JVET-N0088-v1,14th Meeting: Geneva, CH,2019年03月,pp.1-8
Kiran Misra, Frank Bossen, and Andrew Segall,Cross-Component Adaptive Loop Filter for chroma,Joint Video Experts Team (JVET) of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11,JVET-O0636_r1,15th Meeting: Gothenburg, SE,2019年07月,pp.1-9
K. Andersson, J. Strom, Z. Zhang, and J. Enhorn,Fix for ALF virtual boundary processing,Joint Video Experts Team (JVET) of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11,JVET-Q0150,17th Meeting: Brussels,2019年12月,pp.1-8
K. Andersson, J. Strom, Z. Zhang, and J. Enhorn,Additional fix for ALF virtual boundary processing,Joint Video Experts Team (JVET) of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11,JVET-R0299_v2,18th Meeting: by teleconference,2020年04月,pp.1-7
Kiran Misra, Frank Bossen, and Andrew Segall,Cross-Component Adaptive Loop Filter for chroma,Joint Video Experts Team (JVET) of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11,JVET-O0636_r1,15th Meeting: Gothenburg, SE,2019年07月,pp.1-9
K. Andersson, J. Strom, Z. Zhang, and J. Enhorn,Fix for ALF virtual boundary processing,Joint Video Experts Team (JVET) of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11,JVET-Q0150,17th Meeting: Brussels,2019年12月,pp.1-8
K. Andersson, J. Strom, Z. Zhang, and J. Enhorn,Additional fix for ALF virtual boundary processing,Joint Video Experts Team (JVET) of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11,JVET-R0299_v2,18th Meeting: by teleconference,2020年04月,pp.1-7
Attorney, Agent or Firm:
Yoshitaka Sonoda
Yoshitaka Togashi
Toshiyasu Ishioka
Ryo Fujii
Harumi Okaji
Yoshitaka Togashi
Toshiyasu Ishioka
Ryo Fujii
Harumi Okaji