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1. WO2019059680 - VIDEO SIGNAL PROCESSING METHOD AND DEVICE

Publication Number WO/2019/059680
Publication Date 28.03.2019
International Application No. PCT/KR2018/011159
International Filing Date 20.09.2018
IPC
H04N 19/597 2014.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
50using predictive coding
597specially adapted for multi-view video sequence encoding
H04N 19/103 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
103Selection of coding mode or of prediction mode
H04N 19/122 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
12Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform and sub-band transform or selection between H.263 and H.264
122Selection of transform size, e.g. 8x8 or 2x4x8 DCT; Selection of sub-band transforms of varying structure or type
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
H04N 13/332 2018.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
13Stereoscopic video systems; Multi-view video systems; Details thereof
30Image reproducers
332Displays for viewing with the aid of special glasses or head-mounted displays
H04N 13/282 2018.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
13Stereoscopic video systems; Multi-view video systems; Details thereof
20Image signal generators
282for generating image signals corresponding to three or more geometrical viewpoints, e.g. multi-view systems
CPC
H04N 13/282
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
13Stereoscopic video systems; Multi-view video systems; Details thereof
20Image signal generators
282for generating image signals corresponding to three or more geometrical viewpoints, e.g. multi-view systems
H04N 13/332
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
13Stereoscopic video systems; Multi-view video systems; Details thereof
30Image reproducers
332Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
H04N 19/103
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
103Selection of coding mode or of prediction mode
H04N 19/122
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
12Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264
122Selection of transform size, e.g. 8x8 or 2x4x8 DCT; Selection of sub-band transforms of varying structure or type
H04N 19/176
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
H04N 19/597
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
50using predictive coding
597specially adapted for multi-view video sequence encoding
Applicants
  • 주식회사 케이티 KT CORPORATION [KR]/[KR]
Inventors
  • 이배근 LEE, Bae Keun
Agents
  • 최윤서 CHOE, Yun Seo
Priority Data
10-2017-012210921.09.2017KR
Publication Language Korean (KO)
Filing Language Korean (KO)
Designated States
Title
(EN) VIDEO SIGNAL PROCESSING METHOD AND DEVICE
(FR) PROCÉDÉ ET DISPOSITIF DE TRAITEMENT DE SIGNAUX VIDÉO
(KO) 비디오 신호 처리 방법 및 장치
Abstract
(EN)
An image coding method, according to the present invention, may comprise the steps of: generating a 360-degree projected image by means of the projective transformation, on a two-dimensional plane, of a 360-degree image approximated to a stereoscopic figure; and coding information related to padding for the 360-degree projected image. Here, if the projective transformation technique is adjusted cubemap projection (ACP), the 360-degree image projective transformation step may comprise the steps of: transforming a spherical coordinate system of a sample to a first face 2D coordinate system; and transforming the first face 2D coordinate system to a second face 2D coordinate system.
(FR)
Selon l'invention, un procédé de codage d'image peut consister à : générer une image projetée à 360 degrés au moyen de la transformation projective, sur un plan bidimensionnel, d'une image à 360 degrés rapprochée d'une figure stéréoscopique ; et coder les informations relatives au remplissage pour l'image projetée à 360 degrés. Si la technique de transformation projective est une projection de mappage cubique ajustée (ACP), l'étape de transformation de projection d'image à 360 degrés peut comprendre les étapes consistant à : transformer un système de coordonnées sphériques d'un échantillon en un premier système de coordonnées faciales 2D ; et transformer le premier système de coordonnées faciales 2D en un second système de coordonnées faciales 2D.
(KO)
본 발명에 따른 영상 부호화 방법은, 입체 도형으로 근사되는 360도 영상을 2차원 평면에 투영 변환하여 360도 투사 영상을 생성하는 단계, 및 상기 360도 투사 영상에 대한 패딩 관련 정보를 부호화하는 단계를 포함할 수 있다. 이때, 상기 투영 변환 기법이 ACP(Adjusted Cubemap Projection)인 경우, 상기 360도 영상을 투영 변환하는 단계는, 샘플의 구 좌표계를 제1 페이스 2D 좌표계로 변환하는 단계; 및 상기 제1 페이스 2D 좌표계를 제2 페이스 2D 좌표계로 변환하는 단계를 포함할 수 있다.
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