Title:
TRANSFORM CODING BASED ON MATRIX-BASED INTRA PREDICTION
Document Type and Number:
WIPO Patent Application WO/2020/207493
Kind Code:
A1
Abstract:
Devices, systems and methods for digital video coding, which includes matrix-based intra prediction methods for video coding, are described. In a representative aspect, a method for video processing includes performing a conversion between a current video block of a video and a bitstream representation of the current video block according to a rule, where the rule specifies a relationship between applicability of a matrix based intra prediction (MIP) mode or a transform mode during the conversion, where the MIP mode includes determining a prediction block of the current video block by performing, on previously coded samples of the video, a boundary downsampling operation, followed by a matrix vector multiplication operation, and selectively followed by an upsampling operation, and where the transform mode specifies use of a transform operation for the determining the prediction block for the current video block.
Inventors:
DENG ZHIPIN (CN)
ZHANG KAI (US)
ZHANG LI (US)
LIU HONGBIN (CN)
XU JIZHENG (US)
ZHANG KAI (US)
ZHANG LI (US)
LIU HONGBIN (CN)
XU JIZHENG (US)
Application Number:
PCT/CN2020/084472
Publication Date:
October 15, 2020
Filing Date:
April 13, 2020
Export Citation:
Assignee:
BEIJING BYTEDANCE NETWORK TECH CO LTD (CN)
BYTEDANCE INC (US)
BYTEDANCE INC (US)
International Classes:
H04N19/593
Domestic Patent References:
| WO2018236051A1 | 2018-12-27 | |||
| WO2018208349A1 | 2018-11-15 | |||
| WO2019009540A1 | 2019-01-10 |
Foreign References:
| US20190104303A1 | 2019-04-04 |
Other References:
ZHOU YUN;GUO XIAOQIANG;LI XIAOYU: "Study on the Development of Video Coding Standard VVC", RADIO & TV BROADCAST ENGINEERING, vol. 45, no. 9, 15 September 2018 (2018-09-15), pages 26 - 31, XP055741874, ISSN: 1002-4522, DOI: 10.16171/j.cnki.rtbe.2018009003
PFAFF (FRAUNHOFER) J ET AL.: "CE3: Affine linear weighted intra prediction (CE3-4.1, CE3-4.2", 14. JVET MEETING, 19 March 2019 (2019-03-19)
MOONMO KOO ET AL.: "Ce6: Reduced Secondary Transform (RST) (CE6-3.1", 14. JVET MEETING, 19 March 2019 (2019-03-19)
See also references of EP 3939314A4
PFAFF (FRAUNHOFER) J ET AL.: "CE3: Affine linear weighted intra prediction (CE3-4.1, CE3-4.2", 14. JVET MEETING, 19 March 2019 (2019-03-19)
MOONMO KOO ET AL.: "Ce6: Reduced Secondary Transform (RST) (CE6-3.1", 14. JVET MEETING, 19 March 2019 (2019-03-19)
See also references of EP 3939314A4
Attorney, Agent or Firm:
LIU, SHEN & ASSOCIATES (CN)
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