Title:
IMAGE ENCODING/DECODING METHOD AND DEVICE THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/032632
Kind Code:
A1
Abstract:
The present invention relates to a video signal decoding method based on multiple transform selection (MTS). The method may comprise the steps of: parsing a first syntax element representing whether MTS applies to the inverse transformation of a current block, wherein the MTS represents a transform mode which uses a transform type other than a default transform type predefined for the current block; by performing inverse quantization on the current block, deriving an inverse-quantized transform coefficient array having the width and the height of the current block; determining, on the basis of the first syntax element, a vertical transform type applying to the vertical direction of the current block, and a horizontal transform type applying to the horizontal direction of the current block; and, by performing inverse transformation on the inverse-quantized transform coefficient array by using the vertical transform type and the horizontal transform type, deriving a residual sample array having the width and the height of the current block.
Inventors:
KOO MOONMO (KR)
SALEHIFAR MEHDI (KR)
KIM SEUNGHWAN (KR)
LIM JAEHYUN (KR)
SALEHIFAR MEHDI (KR)
KIM SEUNGHWAN (KR)
LIM JAEHYUN (KR)
Application Number:
PCT/KR2019/009990
Publication Date:
February 13, 2020
Filing Date:
August 08, 2019
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04N19/61; H04N19/124; H04N19/176; H04N19/70
Foreign References:
| KR101549910B1 | 2015-09-03 | |||
| KR20180085526A | 2018-07-27 | |||
| KR20130050896A | 2013-05-16 | |||
| KR20180025284A | 2018-03-08 | |||
| US20180098081A1 | 2018-04-05 |
Other References:
See also references of EP 3836551A4
Attorney, Agent or Firm:
ROYAL PATENT & LAW OFFICE (KR)
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