Processing

Please wait...

PATENTSCOPE will be unavailable a few hours for maintenance reason on Sunday 05.04.2020 at 10:00 AM CEST
Settings

Settings

1. WO2020060244 - METHOD AND DEVICE FOR ENCODING/DECODING IMAGES, AND RECORDING MEDIUM FOR STORING BITSTREAM

Publication Number WO/2020/060244
Publication Date 26.03.2020
International Application No. PCT/KR2019/012172
International Filing Date 19.09.2019
IPC
H04N 19/13 2014.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
102characterised by the element, parameter or selection affected or controlled by the adaptive coding
13Adaptive entropy coding, e.g. adaptive variable length coding or context adaptive binary arithmetic coding
H04N 19/124 2014.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
102characterised by the element, parameter or selection affected or controlled by the adaptive coding
124Quantisation
H04N 19/60 2014.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
60using transform coding
H04N 19/117 2014.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
102characterised by the element, parameter or selection affected or controlled by the adaptive coding
117Filters, e.g. for pre-processing or post-processing
H04N 19/176 2014.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
169characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
17the unit being an image region, e.g. an object
176the region being a block, e.g. a macroblock
Applicants
  • 한국전자통신연구원 ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE [KR/KR]; 대전시 유성구 가정로 218 218, Gajeong-ro, Yuseong-gu Daejeon 34129, KR
  • 주식회사 칩스앤미디어 CHIPS&MEDIA,INC [KR/KR]; 서울시 강남구 삼성로85길 26 V&S타워 13층 13th Fl., V&S Tower 26, Samseong-ro 85-gil, Gangnam-gu Seoul 06194, KR
  • 세종대학교 산학협력단 INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY [KR/KR]; 서울시 광진구 능동로 209 209, Neungdong-ro, Gwangjin-gu Seoul 05006, KR
  • 한국항공대학교산학협력단 INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY [KR/KR]; 경기도 고양시 덕양구 항공대학로 76 76, Hanggongdaehak-ro, Deogyang-gu, Goyang-si Gyeonggi-do 10540, KR
Inventors
  • 임성창 LIM, Sung Chang; KR
  • 강정원 KANG, Jung Won; KR
  • 이하현 LEE, Ha Hyun; KR
  • 이진호 LEE, Jin Ho; KR
  • 김휘용 KIM, Hui Yong; KR
  • 김대연 KIM, Dae Yeon; KR
  • 박동진 PARK, Dong Jin; KR
  • 정욱제 JEONG, Wook Je; KR
  • 이영렬 LEE, Yung Lyul; KR
  • 김재곤 KIM, Jae Gon; KR
Agents
  • 성병기 SUNG, Byung Kee; KR
Priority Data
10-2018-011248419.09.2018KR
Publication Language Korean (KO)
Filing Language Korean (KO)
Designated States
Title
(EN) METHOD AND DEVICE FOR ENCODING/DECODING IMAGES, AND RECORDING MEDIUM FOR STORING BITSTREAM
(FR) PROCÉDÉ ET DISPOSITIF DE CODAGE/DÉCODAGE D'IMAGES, ET SUPPORT D'ENREGISTREMENT POUR STOCKER UN FLUX BINAIRE
(KO) 영상 부호화/복호화 방법, 장치 및 비트스트림을 저장한 기록 매체
Abstract
(EN)
The present specification discloses a method for decoding images. The method for decoding images of the present invention comprises: a step for performing inverse quantization on a current block and obtaining a transform coefficient of the current block; a step for performing at least one among a primary inverse transform and a secondary inverse transform on the transform coefficient of the current block and obtaining a residual block of the current block; and a step for adding the residual block of the current block and a prediction block of the current block and obtaining a reconstructed block of the current block, wherein the secondary inverse transform can be performed only when the current block is in an intra-prediction mode.
(FR)
La présente invention concerne un procédé de décodage d'images. Le procédé de décodage d'images de la présente invention comprend : une étape consistant à effectuer une quantification inverse sur un bloc courant et à obtenir un coefficient de transformée du bloc courant ; une étape consistant à effectuer une transformée inverse primaire et/ou une transformée inverse secondaire sur le coefficient de transformée du bloc courant et à obtenir un bloc résiduel du bloc courant ; et une étape consistant à ajouter le bloc résiduel du bloc courant et un bloc de prédiction du bloc courant et à obtenir un bloc reconstruit du bloc courant, la transformée inverse secondaire pouvant être effectuée uniquement lorsque le bloc courant est dans un mode de prédiction intra.
(KO)
본 명세서에서는 영상 복호화 방법이 개시된다. 본 발명의 영상 복호화 방법은, 현재 블록에 역양자화를 수행하여 상기 현재 블록의 변환 계수를 획득 단계, 상기 현재 블록의 변환 계수에 1차 역변환 및 2차 역변환 중 적어도 하나의 역변환을 수행하여 상기 현재 블록의 잔여 블록 획득하는 단계 및 상기 현재 블록의 잔여 블록 및 상기 현재 블록의 예측 블록을 가산하여 상기 현재 블록의 복원 블록을 획득하는 단계를 포함하고, 상기 2차 역변환은 상기 현재 블록이 화면 내 예측 모드인 경우에만 수행될 수 있다.
Latest bibliographic data on file with the International Bureau