WO2011096071A1 - Codeur vidéo et décodeur vidéo - Google Patents

Codeur vidéo et décodeur vidéo Download PDF

Info

Publication number
WO2011096071A1
WO2011096071A1 PCT/JP2010/051720 JP2010051720W WO2011096071A1 WO 2011096071 A1 WO2011096071 A1 WO 2011096071A1 JP 2010051720 W JP2010051720 W JP 2010051720W WO 2011096071 A1 WO2011096071 A1 WO 2011096071A1
Authority
WO
WIPO (PCT)
Prior art keywords
slice
unit
information
filter
pixel
Prior art date
Application number
PCT/JP2010/051720
Other languages
English (en)
Japanese (ja)
Inventor
中條　健
隆志 渡辺
豪毅 安田
昭行 谷沢
竹島　秀則
沙織 浅香
山影　朋夫
山口　潤
Original Assignee
株式会社 東芝
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社 東芝 filed Critical 株式会社 東芝
Priority to PCT/JP2010/051720 priority Critical patent/WO2011096071A1/fr
Publication of WO2011096071A1 publication Critical patent/WO2011096071A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/117—Filters, e.g. for pre-processing or post-processing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised 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
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised 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 the unit being an image region, e.g. an object
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised 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
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised 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 the unit being an image region, e.g. an object
    • H04N19/174—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised 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 the unit being an image region, e.g. an object the region being a slice, e.g. a line of blocks or a group of blocks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/46—Embedding additional information in the video signal during the compression process
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/80—Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation
    • H04N19/82—Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation involving filtering within a prediction loop

Definitions

  • a moving image encoding apparatus refers to an input image signal and a locally decoded image signal decoded for each pixel, and includes a slice indicating a region of an entire picture or a region obtained by dividing a picture into two or more.
  • the encoding control unit 102 controls the entire encoding unit 101 such as control of a loop filter setting unit 107 or a prediction unit 110 described later.
  • the subtraction unit 103 receives an input image signal from the outside and a prediction image signal from the prediction unit 110 described later, and generates a difference between the input image signal and the prediction image signal as a difference signal.
  • step S405 the filter processing unit 303 outputs the reference image including the pixel on which the filter processing has been performed and the pixel area on which the filter processing has not been performed. The operation of the loop filter unit 108 is thus completed. If the pixel value outside the slice is required in the filter operation of the filter processing unit 303 in step S404, the pixel value at the slice boundary is directly copied as the outer pixel value, or the slice boundary is used as the center. The pixel value may be used on the assumption that the pixel exists symmetrically as a line.
  • unit information 603 is not sent to the entropy coding unit 111 and is not used as coded data.
  • D) When a slice boundary exists in the unit area and filtering is performed (unit area 604) The loop filter unit 108 performs the filter process only on the pixels in the slice included in the unit area 604, and does not perform the filter process on the pixels in the area outside the slice.
  • E) When a slice boundary exists in the unit area and no filter processing is performed (unit area 605) Regardless of the slice and the outside of the slice, the filtering process is not performed on all the pixels in the unit region 605.
  • the unit area information has a quadtree data structure
  • information regarding whether or not to perform the filtering process for each area (hereinafter referred to as a child node area) obtained by dividing the unit area into four may be given.
  • a child node area information regarding whether or not to perform the filtering process for each area obtained by dividing the unit area into four
  • “ON” or “OFF” may be set for each child node area, and the pixels included in each child node area may be filtered.
  • information on whether or not to perform the filtering process is given to only the child node area included in the slice among the four child node areas, and this is used as the switching information. Also good.
  • the upper two child node areas that are set to “ON” and “OFF” that exist in the slice portion in the unit area 607 are set as unit areas and are used as switching information. By doing so, it is not necessary to encode pixels that are not subjected to filter processing in an area outside the slice, and thus the amount of data to be encoded can be reduced.
  • the syntax or the filter processing range of the encoded data of the loop filter unit is set, and the filter processing is performed on the pixels in the slice based on the filter shape information.
  • Appropriate filtering can also be performed on slices having a shape, and processing delay and error tolerance can be realized.
  • FIG. 7C shows a case where the top macroblock of the slice 701 is the left end of the picture and the end macroblock of the slice 701 is not the right end of the picture, and FIG. The macroblock is not the left end of the picture, and the macroblock at the end of the slice 701 is the right end of the picture.
  • the entire shape of the slice 701 is a hexagon, and the entire shape of the slice 701 is divided into two by a rectangular filter processing range 702, and the slice processing unit 702 is divided into slices for each filter processing range 702. Filter processing is performed on the pixels.
  • the setting method and the order of the plurality of rectangles set as the filter processing range may be anything as long as they are the same on the encoding side and the decoding side.
  • the three filter processing ranges 702 illustrated in FIG. 7B may be set to represent the entire shape of the slice 701 using the filter processing ranges represented by two rectangles.
  • the loop filter unit does not have to wait for the local decoded image signal of the entire slice when encoding the slice. Since the filtering process can be performed for each pixel included in the filtering process range, the encoding process and the error resistance can be further reduced.
  • the inverse quantization and inverse transform unit 1002 performs the same operation as the inverse quantization and inverse transform unit 105 according to the first embodiment, and performs inverse quantization on the quantized transform coefficient information decoded by the entropy decoding unit 1001. Then, inverse orthogonal transform is performed to generate a reproduction difference signal.
  • the loop filter unit 1004 performs substantially the same operation as the loop filter unit 108 according to the first embodiment, and receives the decoded image signal from the adder 1003 and the slice shape information, switching information, and filter coefficient information from the entropy decoder 1001. Receive each. Then, the loop filter unit 1004 performs a filtering process on the decoded image signal according to the slice shape to generate a reference image signal. Note that in the case of a video decoding device corresponding to the video encoding device according to the third embodiment, filter slice shape information, switching information, and filter coefficient information are received from the entropy decoding unit 1001. Then, the loop filter unit 1004 performs a loop filter process on the decoded image signal in accordance with the filter slice shape to generate a reference image signal.
  • the instructions shown in the processing procedure shown in the above embodiment can be executed based on a program that is software.
  • a general-purpose computer system stores this program in advance and reads this program, whereby it is possible to obtain the same effects as those obtained by the above-described moving picture coding apparatus and moving picture decoding apparatus.
  • the instructions described in the above-described embodiments are, as programs that can be executed by a computer, magnetic disks (flexible disks, hard disks, etc.), optical disks (CD-ROM, CD-R, CD-RW, DVD-ROM, DVD). ⁇ R, DVD ⁇ RW, etc.), semiconductor memory, or a similar recording medium. As long as the recording medium is readable by the computer or the embedded system, the storage format may be any form.
  • the computer reads the program from the recording medium and causes the CPU to execute instructions described in the program based on the program
  • the computer is similar to the video encoding device and video decoding device of the above-described embodiment. Operation can be realized.
  • the computer acquires or reads the program, it may be acquired or read through a network.
  • the OS operating system
  • database management software database management software
  • MW middleware
  • a part of each process for performing may be executed.
  • the recording medium in the present invention is not limited to a medium independent of a computer or an embedded system, but also includes a recording medium in which a program transmitted via a LAN or the Internet is downloaded and stored or temporarily stored.
  • the number of recording media is not limited to one, and when the processing in the present embodiment is executed from a plurality of media, it is included in the recording media in the present invention, and the configuration of the media may be any configuration.
  • DESCRIPTION OF SYMBOLS 100 ... Moving image encoding apparatus, 101 ... Encoding part, 102 ... Encoding control part, 103 ... Subtraction part, 104 ... Transformation and quantization part, 105, 1002 ... Inverse quantization and inverse transform unit, 106, 1003... Adder, 107... Loop filter setting unit, 108, 1004... Loop filter unit, 109, 1005. ..Prediction unit, 111... Entropy coding unit, 201... Slice shape information, 202... Filter coefficient information, 203... Information, 301. Switch 303 ... Filter processing unit 501,701 ... Slice 502,702,801 ... Filter processing range 601,602,603,603,604,605,606 607 ... unit area, 901 ... filter slice shape information, 902 ... filter coefficient information, 903 ... switching information, 1000 ... moving picture decoding apparatus, 1001 ... entropy decoding unit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

L'invention concerne un codeur vidéo, comprenant : un module de paramétrage de filtre (107) conçu pour paramétrer des informations de forme de tranche relatives à une tranche, des informations de commutation contenant des informations relatives à une région particulière à filtrer et des informations indiquant s'il convient de filtrer des pixels dans la région particulière, et des informations de coefficients de filtre indiquant les coefficients de filtre à utiliser pour les pixels à filtrer ; un module filtre à boucle (108) conçu pour filtrer des pixels et pour générer un signal d'image de référence si les informations de commutation indiquent qu'il convient de filtrer les pixels contenus dans une région particulière au sein d'une plage de traitement de filtre et si les pixels sont présents à la fois dans la région particulière et une tranche ; un module de prédiction (110) conçu pour réaliser une prédiction par compensation du mouvement à partir du signal d'image de référence et pour générer un signal d'image prédite ; un module de conversion et de quantification (104) conçu pour réaliser une conversion orthogonale et une quantification d'un signal de différence indiquant une différence entre un signal d'image d'entrée et le signal d'image prédite, et pour générer des informations de coefficients de quantification et de conversion ; et un module de codage (111) conçu pour coder les informations de coefficients de quantification et de conversion, les informations de forme de tranche, les informations de commutation et les informations de coefficients de filtre.
PCT/JP2010/051720 2010-02-05 2010-02-05 Codeur vidéo et décodeur vidéo WO2011096071A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2010/051720 WO2011096071A1 (fr) 2010-02-05 2010-02-05 Codeur vidéo et décodeur vidéo

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2010/051720 WO2011096071A1 (fr) 2010-02-05 2010-02-05 Codeur vidéo et décodeur vidéo

Publications (1)

Publication Number Publication Date
WO2011096071A1 true WO2011096071A1 (fr) 2011-08-11

Family

ID=44355098

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2010/051720 WO2011096071A1 (fr) 2010-02-05 2010-02-05 Codeur vidéo et décodeur vidéo

Country Status (1)

Country Link
WO (1) WO2011096071A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005510982A (ja) * 2001-11-27 2005-04-21 ノキア コーポレイション 画面がスライスに分割される前景および背景のビデオ符号化および復号
JP2006014301A (ja) * 2001-09-12 2006-01-12 Matsushita Electric Ind Co Ltd 画像符号化方法
JP2006114979A (ja) * 2004-10-12 2006-04-27 Canon Inc 画像符号化装置及びその方法
JP2006141037A (ja) * 2005-11-14 2006-06-01 Ntt Docomo Inc 動画像符号化装置、動画像符号化方法及び動画像符号化プログラム
JP2006279574A (ja) * 2005-03-29 2006-10-12 Sanyo Electric Co Ltd 復号装置と方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006014301A (ja) * 2001-09-12 2006-01-12 Matsushita Electric Ind Co Ltd 画像符号化方法
JP2005510982A (ja) * 2001-11-27 2005-04-21 ノキア コーポレイション 画面がスライスに分割される前景および背景のビデオ符号化および復号
JP2006114979A (ja) * 2004-10-12 2006-04-27 Canon Inc 画像符号化装置及びその方法
JP2006279574A (ja) * 2005-03-29 2006-10-12 Sanyo Electric Co Ltd 復号装置と方法
JP2006141037A (ja) * 2005-11-14 2006-06-01 Ntt Docomo Inc 動画像符号化装置、動画像符号化方法及び動画像符号化プログラム

Similar Documents

Publication Publication Date Title
KR102462009B1 (ko) 영상 부호화 방법 및 컴퓨터로 읽을 수 있는 기록 매체
RU2680349C1 (ru) Устройство обработки изображений и способ обработки изображений
TW201830960A (zh) 圖像處理裝置、圖像處理方法、圖像處理程式及電腦可讀取媒體
TW201444350A (zh) 方形區塊預測
JP2007124564A (ja) 画像符号化装置、方法、及びプログラム
JP7413557B2 (ja) サインデータハイディング関連映像デコーディング方法及びその装置
JP6409516B2 (ja) ピクチャ符号化プログラム、ピクチャ符号化方法及びピクチャ符号化装置
JPWO2009008177A1 (ja) トランスコーダ、トランスコード方法、デコーダ、およびデコード方法
JP7383816B2 (ja) ループフィルタリングを制御する画像コーディング装置及び方法
JP2007053554A (ja) 符号化装置、符号化方法、復号装置、復号方法およびプログラム
JP2006295569A (ja) 動画像復号装置
JP4643437B2 (ja) 情報処理装置
JP7294322B2 (ja) 画像処理装置、及び画像処理方法
US20230069664A1 (en) Image coding apparatus, image coding method, and program, and image decoding apparatus, image decoding method, and program
JP2007318615A (ja) 動画再生装置、動画再生方法およびプログラム
WO2012120908A1 (fr) Dispositif de codage d'image vidéo et procédé de codage d'image vidéo
JP2018530259A (ja) ビデオ処理システムにおける層状非ブロック化フィルタリングおよび方法
JP7403246B2 (ja) 画像復号装置、画像復号方法
WO2020059341A1 (fr) Dispositif de décodage d'image, dispositif de codage d'image, système de traitement d'image, et programme
WO2011096071A1 (fr) Codeur vidéo et décodeur vidéo
JP7315509B2 (ja) 画像復号装置、画像復号方法及びプログラム
KR20200004348A (ko) 타겟 영역 수정을 통해 비디오 신호를 처리하는 방법 및 장치
RU2814221C2 (ru) Кодирование изображения или видео на основе режима палитры
US20220201337A1 (en) Image encoding apparatus, image decoding apparatus, image encoding method, image decoding method, and non-transitory computer-readable storage medium
CN116325723B (zh) 用于视频解码的方法、计算机设备及介质

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10845207

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 10845207

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP