Title:
INTERACTION BETWEEN CORE TRANSFORM AND SECONDARY TRANSFORM
Document Type and Number:
WIPO Patent Application WO/2020/200298
Kind Code:
A1
Abstract:
A video decoder receives data from a bitstream for a block of pixels to be decoded as a current block of a current picture of a video. The video decoder receives from the bitstream a first signaled index and a second signaled index for the current block. The video decoder determines a first merge index and a second merge index from the first and second signaled indices. The video decoder uses the first merge index to select a first motion candidate and the second merge index to select a second motion candidate. A video decoder generates a set of prediction samples in AL WIP mode and performs an inverse secondary transform and then an inverse primary transform to generate a set of residual samples of the current block. Enabling or selection of secondary transform and/or primary transform depends on size, width, height or combination of the above for the current block. The video decoder reconstructs the current block by using the set of residual samples and the set of prediction samples.
Inventors:
CHIANG MAN-SHU (CN)
HSU CHIH-WEI (CN)
HSU CHIH-WEI (CN)
Application Number:
PCT/CN2020/083090
Publication Date:
October 08, 2020
Filing Date:
April 03, 2020
Export Citation:
Assignee:
MEDIATEK INC (CN)
International Classes:
H04N19/513
Foreign References:
| US20180352247A1 | 2018-12-06 | |||
| US20170094313A1 | 2017-03-30 | |||
| CN103024389A | 2013-04-03 | |||
| CN103561263A | 2014-02-05 |
Other References:
See also references of EP 3949417A4
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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