Title:
SYSTEMS AND METHODS FOR PERFORMING INTRA PREDICTION IN VIDEO CODING
Document Type and Number:
WIPO Patent Application WO/2021/210556
Kind Code:
A1
Abstract:
A method of generating predicted samples for a current transform block in video coding is disclosed. The method comprising: setting a neighboring left luma sample value defined with x equal to -1, -2 or -3, corresponding to the current transform block, being equal to a reconstructed luma sample; setting a neighboring top-left luma sample value defined with x equal to -2 and y equal to -1, corresponding to the current transform block, being equal to the neighboring left luma sample value, in a case that the neighboring top-left luma sample value is unavailable; deriving a down-sampled neighboring left luma sample value for the current transform block by using the neighboring left luma sample value and on a chroma format; and generating the prediction samples by using the down-sampled neighboring luma sample values.
Inventors:
BOSSEN FRANK
Application Number:
PCT/JP2021/015249
Publication Date:
October 21, 2021
Filing Date:
April 13, 2021
Export Citation:
Assignee:
SHARP KK (JP)
International Classes:
H04N19/105; H04N19/176; H04N19/593
Other References:
Y. WANG (BYTEDANCE), K. ZHANG (BYTEDANCE), L. ZHANG (BYTEDANCE), H. LIU (BYTEDANCE): "AHG2/AHG16: Fixes on CCLM", 130. MPEG MEETING; 20200420 - 20200424; ALPBACH; (MOTION PICTURE EXPERT GROUP OR ISO/IEC JTC1/SC29/WG11), no. 030286466, 14 April 2020 (2020-04-14), XP030286466
L. LI (TENCENT), X. LI, S. LIU (TENCENT), A. FILIPPOV (HUAWEI), V. RUFITSKIY, E. ALSHINA (HUAWEI), Y. WANG (BYTEDANCE), K. ZHANG, : "CCLM: common text for spec bugfixes", 130. MPEG MEETING; 20200420 - 20200424; ALPBACH; (MOTION PICTURE EXPERT GROUP OR ISO/IEC JTC1/SC29/WG11), no. m53832 ; JVET-R0452, 14 April 2020 (2020-04-14), XP030287617
L. LI (TENCENT), X. LI, S. LIU (TENCENT), A. FILIPPOV (HUAWEI), V. RUFITSKIY, E. ALSHINA (HUAWEI), Y. WANG (BYTEDANCE), K. ZHANG, : "CCLM: common text for spec bugfixes", 130. MPEG MEETING; 20200420 - 20200424; ALPBACH; (MOTION PICTURE EXPERT GROUP OR ISO/IEC JTC1/SC29/WG11), no. m53832 ; JVET-R0452, 14 April 2020 (2020-04-14), XP030287617
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (JP)
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