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1. WO2019041222 - ENCODING METHOD, DECODING METHOD, ENCODING APPARATUS AND DECODING APPARATUS

Publication Number WO/2019/041222
Publication Date 07.03.2019
International Application No. PCT/CN2017/099898
International Filing Date 31.08.2017
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
CPC
H04N 19/105
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
105Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
H04N 19/124
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 19/13
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 [AVLC] or context adaptive binary arithmetic coding [CABAC]
H04N 19/152
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
134characterised by the element, parameter or criterion affecting or controlling the adaptive coding
146Data rate or code amount at the encoder output
152by measuring the fullness of the transmission buffer
H04N 19/167
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
134characterised by the element, parameter or criterion affecting or controlling the adaptive coding
167Position within a video image, e.g. region of interest [ROI]
H04N 19/182
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
182the unit being a pixel
Applicants
  • 深圳市大疆创新科技有限公司 SZ DJI TECHNOLOGY CO., LTD. [CN]/[CN]
Inventors
  • 郑萧桢 ZHENG, Xiaozhen
  • 余良 YU, Liang
Agents
  • 北京龙双利达知识产权代理有限公司 LONGSUN LEAD IP LTD.
Priority Data
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) ENCODING METHOD, DECODING METHOD, ENCODING APPARATUS AND DECODING APPARATUS
(FR) PROCÉDÉ DE CODAGE, PROCÉDÉ DE DÉCODAGE, APPAREIL DE CODAGE ET APPAREIL DE DÉCODAGE
(ZH) 编码方法、解码方法以及编码装置和解码装置
Abstract
(EN)
An encoding method, a decoding method, an encoding apparatus and a decoding apparatus, wherein same are capable of improving the quality of encoding. The encoding method comprises: performing encoding processing on a pixel point in a first rectangular area of an image; if the total number Bi of encoded bits used by the first i encoded pixel points in the first rectangular area is less than or equal to the maximum number Bmax of encoded bits allowed to be used in the first rectangular area, and the sum of the number bi+1 of encoded bits needing to be used by an (i+1)th pixel point in the first rectangular area and Bi is greater than Bmax, according to encoded data of at least one encoded pixel point in the image, determining encoded data of at least one uncoded pixel point in the first rectangular area; and adding a first identifier to an encoded bit stream of the first rectangular area, wherein the first identifier is used for identifying the termination of the encoding of the first rectangular area and the first rectangular area has at least one uncoded pixel point.
(FR)
L'invention concerne un procédé de codage, un procédé de décodage, un appareil de codage et un appareil de décodage, ces derniers pouvant améliorer la qualité de codage. Le procédé de codage consiste : à effectuer un traitement de codage sur un point de pixel dans une première zone rectangulaire d'une image ; si le nombre total Bi de bits codés utilisés par les i premiers points de pixel codés dans la première zone rectangulaire est inférieur ou égal au nombre maximum Bmax de bits codés autorisés à être utilisés dans la première zone rectangulaire et si la somme du nombre bi + 1 de bits codés qui doivent être utilisés par un (i + 1)ème point de pixel dans la première zone rectangulaire et si Bi est supérieur à Bmax, en fonction de données codées d'au moins un point de pixel codé dans l'image, à déterminer des données codées d'au moins un point de pixel non codé dans la première zone rectangulaire ; et à ajouter un premier identifiant à un train de bits codé de la première zone rectangulaire, le premier identifiant étant utilisé pour identifier la fin du codage de la première zone rectangulaire et la première zone rectangulaire ayant au moins un point de pixel non codé.
(ZH)
一种编码方法、解码方法以及编码装置和解码装置,能够提高编码质量。该编码方法包括:对图像的第一矩形区域中的像素点进行编码处理;若该第一矩形区域中的前i个已编码的像素点使用的总编码比特数Bi小于或等于该第一矩形区域的最大允许使用编码比特数Bmax,并且该第一矩形区域中的第i+1个像素点需要使用的编码比特数bi+1与Bi之和大于Bmax,根据该图像中至少一个已编码的像素点的编码数据,确定该第一矩形区域中至少一个未编码像素点的编码数据;向该第一矩形区域的编码比特流添加第一标识符,该第一标识符用于标识对该第一矩形区域的编码结束并且该第一矩形区域具有至少一个未编码像素点。
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