METHOD AND APPARATUS FOR VIDEO CODING BASED ON NON-SEPARABLE PRIMARY TRANSFORM

Title:

METHOD AND APPARATUS FOR VIDEO CODING BASED ON NON-SEPARABLE PRIMARY TRANSFORM

Document Type and Number:

WIPO Patent Application WO/2024/071680

Kind Code:

A1

Abstract:

The present embodiment provides a method and an apparatus for video coding based on non-separable primary transform (NSPT). In the present embodiment, an image decoding device acquires inversely-quantized transform coefficients for a transform block of the current block, and decodes an NSPT flag indicating whether NSPT is applied. The image decoding device identifies the NSPT flag so as to determine, if the NSPT flag is true, non-separable primary inverse transform kernel on the basis of the size of the transform block, an intra prediction mode of the current block, and characteristics of the inversely-quantized transform coefficients. The image decoding device generates residual signals by applying the non-separable primary inverse transform kernel to the transform coefficients.

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Inventors:

SIM DONG GYU (KR)
BYEON JOO HYUNG (KR)
LEE MIN HUN (KR)
HEO JIN (KR)
PARK SEUNG WOOK (KR)

Application Number:

PCT/KR2023/012177

Publication Date:

April 04, 2024

Filing Date:

August 17, 2023

Export Citation:

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Assignee:

HYUNDAI MOTOR CO LTD (KR)
KIA CORP (KR)
UNIV KWANGWOON IND ACAD COLLAB (KR)

International Classes:

H04N19/61; H04N19/11; H04N19/119; H04N19/122; H04N19/129; H04N19/157; H04N19/176; H04N19/18; H04N19/593; H04N19/70

Foreign References:

KR102287305B1	2021-08-06
KR20190049919A	2019-05-09
KR20210068007A	2021-06-08
US20180020218A1	2018-01-18

Other References:

J. CHOI (LGE), M. KOO, J. LIM, J. ZHAO, S. KIM (LGE): "AHG12: A study on non-separable primary transform", 27. JVET MEETING; 20220713 - 20220722; TELECONFERENCE; (THE JOINT VIDEO EXPLORATION TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ), 13 July 2022 (2022-07-13), XP030302766

Attorney, Agent or Firm:

LEE, Chulhee (KR)

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