Title:
METHODS FOR PERFORMING ENCODING AND DECODING, ENCODING END AND DECODING END
Document Type and Number:
WIPO Patent Application WO/2020/182103
Kind Code:
A1
Abstract:
The present invention relates to the field of audio and video techniques. Provided are methods for performing encoding and decoding, an encoding end, a decoding end, and a system. The method comprises: a decoding end acquiring encoded data of a current block; if the current block meets a sub-partition condition and the current block is determined to activate intra-frame sub-partition according to the encoded data of the current block, then determining, according to sub-partition information of the current block, dimension information and shape information of each respective sub-partition; if each sub-partition has a width meeting a first dimension limit condition and a shape meeting a first condition, then determining that DST7 is a horizontal transformation kernel in a transformation kernel pair corresponding to the sub-partition; if each sub-partition has a height meeting a second dimension limit condition and a shape meeting a second condition, then determining that DST7 is a vertical transformation kernel in the transformation kernel pair corresponding to the sub-partition; and performing inverse transformation operations on inversely quantized data of the respective sub-partitions according to the transformation kernel pairs corresponding to the respective sub-partitions. The present disclosure can enhance encoding and decoding performance.
Inventors:
CAO XIAOQIANG (CN)
XU LIYING (CN)
CHEN FANGDONG (CN)
XU LIYING (CN)
CHEN FANGDONG (CN)
Application Number:
PCT/CN2020/078487
Publication Date:
September 17, 2020
Filing Date:
March 09, 2020
Export Citation:
Assignee:
HANGZHOU HIKVISION DIGITAL TEC (CN)
International Classes:
H04N19/122
Domestic Patent References:
| WO2019009584A1 | 2019-01-10 | |||
| WO2018026166A1 | 2018-02-08 |
Foreign References:
| CN106101705A | 2016-11-09 | |||
| US20180249179A1 | 2018-08-30 | |||
| CN201910177528A | 2019-03-09 |
Other References:
SHRESTHA, S. ET AL.: "CE6-Related: DST-3 Based Transform Kernels Derivation", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11 13TH MEETING: MARRAKECH, MA ( JVET-M0397), 10 January 2019 (2019-01-10), XP030201356
CHOI, K. ET AL.: "CE6-Related: Simplification on MTS Kernel Derivation", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11 12TH MEETING: MACAO, CN (JVET-L0059), 3 October 2018 (2018-10-03), XP030194380
See also references of EP 3923575A4
CHOI, K. ET AL.: "CE6-Related: Simplification on MTS Kernel Derivation", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11 12TH MEETING: MACAO, CN (JVET-L0059), 3 October 2018 (2018-10-03), XP030194380
See also references of EP 3923575A4
Attorney, Agent or Firm:
BEIJING SAN GAO YONG XIN INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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