MX2013000711A - Ocultacion multiple de bits de signo dentro de una unidad de transformada. - Google Patents

Ocultacion multiple de bits de signo dentro de una unidad de transformada.

Info

Publication number
MX2013000711A
MX2013000711A MX2013000711A MX2013000711A MX2013000711A MX 2013000711 A MX2013000711 A MX 2013000711A MX 2013000711 A MX2013000711 A MX 2013000711A MX 2013000711 A MX2013000711 A MX 2013000711A MX 2013000711 A MX2013000711 A MX 2013000711A
Authority
MX
Mexico
Prior art keywords
transform unit
sign bit
decoding
encoding
bit hiding
Prior art date
Application number
MX2013000711A
Other languages
English (en)
Inventor
Jing Wang
Dake He
Xiang Yu
Original Assignee
Research In Motion Ltd
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 Research In Motion Ltd filed Critical Research In Motion Ltd
Publication of MX2013000711A publication Critical patent/MX2013000711A/es

Links

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
    • 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
    • H04N19/467—Embedding additional information in the video signal during the compression process characterised by the embedded information being invisible, e.g. watermarking
    • 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
    • H04N19/48—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using compressed domain processing techniques other than decoding, e.g. modification of transform coefficients, variable length coding [VLC] data or run-length data

Landscapes

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

Abstract

Se describen métodos para codificar y descodificar datos de video para codificar o descodificar coeficientes para una unidad de transformada. En particular, los bits de signo para los coeficientes no nulos se codifican utilizando ocultación de bits de signo. Dos o más conjuntos de coeficientes se definen para la unidad de transformada y un bit de signo puede ocultarse para cada conjunto, sujeta a satisfacción de una prueba de umbral. Los conjuntos pueden corresponder con grupos de coeficientes que se utilizan de otra manera en una codificación y descodificación de mapas de importancia de multinivel.
MX2013000711A 2012-01-20 2013-01-16 Ocultacion multiple de bits de signo dentro de una unidad de transformada. MX2013000711A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12151973.0A EP2618572B1 (en) 2012-01-20 2012-01-20 Multiple sign bit hiding within a transform unit

Publications (1)

Publication Number Publication Date
MX2013000711A true MX2013000711A (es) 2014-01-09

Family

ID=45491487

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2013000711A MX2013000711A (es) 2012-01-20 2013-01-16 Ocultacion multiple de bits de signo dentro de una unidad de transformada.

Country Status (11)

Country Link
EP (6) EP3399753B1 (es)
JP (1) JP5537681B2 (es)
KR (1) KR101538837B1 (es)
CN (2) CN103220515B (es)
AU (1) AU2013200325B2 (es)
BR (1) BR102013001124B1 (es)
CA (1) CA2801767C (es)
ES (1) ES2776925T3 (es)
MX (1) MX2013000711A (es)
SG (1) SG192360A1 (es)
TW (1) TWI524780B (es)

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FR2982446A1 (fr) 2011-11-07 2013-05-10 France Telecom Procede de codage et decodage d'images, dispositif de codage et decodage et programmes d'ordinateur correspondants
EP3399753B1 (en) * 2012-01-20 2019-12-11 Velos Media International Limited Multiple sign bit hiding within a transform unit
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US9264724B2 (en) 2013-10-11 2016-02-16 Blackberry Limited Sign coding for blocks with transform skipped
US9456210B2 (en) * 2013-10-11 2016-09-27 Blackberry Limited Sign coding for blocks with transform skipped
KR102218196B1 (ko) * 2013-10-28 2021-02-23 삼성전자주식회사 인코더, 이의 동작 방법과, 상기 인코더를 포함하는 장치들
US10136140B2 (en) 2014-03-17 2018-11-20 Microsoft Technology Licensing, Llc Encoder-side decisions for screen content encoding
JP6401290B2 (ja) * 2014-04-01 2018-10-10 ホアウェイ・テクノロジーズ・カンパニー・リミテッド 多層構造化コーディングユニットのデータ隠蔽のための方法および装置
US10924743B2 (en) 2015-02-06 2021-02-16 Microsoft Technology Licensing, Llc Skipping evaluation stages during media encoding
CN106162201B (zh) * 2015-03-26 2019-02-15 北京君正集成电路股份有限公司 一种基于符号位分组的图像数据压缩方法及装置
US10038917B2 (en) 2015-06-12 2018-07-31 Microsoft Technology Licensing, Llc Search strategies for intra-picture prediction modes
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EP3412028B1 (en) * 2016-02-12 2024-04-03 Huawei Technologies Co., Ltd. Method and apparatus for scan order selection
CN105898300B (zh) * 2016-05-06 2019-03-26 西安电子科技大学 一种基于恢复变换系数的改进变换系数符号位隐藏方法
WO2017194773A1 (en) * 2016-05-13 2017-11-16 Telefonaktiebolaget Lm Ericsson (Publ) Motion vector difference coding and decoding
WO2017209455A2 (ko) * 2016-05-28 2017-12-07 세종대학교 산학협력단 비디오 신호의 부호화 또는 복호화 방법 및 장치
WO2019127003A1 (zh) * 2017-12-26 2019-07-04 富士通株式会社 图像编码方法、装置以及电子设备
WO2019156469A1 (ko) * 2018-02-09 2019-08-15 삼성전자 주식회사 비디오 복호화 방법 및 장치, 비디오 부호화 방법 및 장치
EP3738309A1 (en) * 2018-03-07 2020-11-18 Huawei Technologies Co., Ltd. Method and apparatus for detecting blocks suitable for multiple sign bit hiding
KR102419112B1 (ko) * 2018-03-07 2022-07-07 후아웨이 테크놀러지 컴퍼니 리미티드 변환 도메인에서 잔차 부호 예측 방법 및 장치
WO2019172797A1 (en) * 2018-03-07 2019-09-12 Huawei Technologies Co., Ltd. Method and apparatus for harmonizing multiple sign bit hiding and residual sign prediction
IL281629B2 (en) * 2018-09-21 2024-01-01 Guangdong Oppo Mobile Telecommunications Corp Ltd A method of encoding/decoding image signals and a device therefor
AU2020201753B2 (en) * 2020-03-10 2022-09-08 Canon Kabushiki Kaisha Method, apparatus and system for encoding and decoding a block of video samples
WO2023277451A1 (ko) * 2021-07-01 2023-01-05 세종대학교 산학협력단 부호 비트 숨김을 이용한 비디오 부호화 및 복호화 방법
WO2024008060A1 (en) * 2022-07-05 2024-01-11 Mediatek Inc. Method and apparatus of dependent quantization for video coding
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US6570924B1 (en) * 1998-11-20 2003-05-27 Interval Research Corp Low cost video compression using fast, modified Z-coding of wavelet pyramids
CN1383684A (zh) * 2000-06-14 2002-12-04 皇家菲利浦电子有限公司 彩色视频编码与解码方法
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FR2982446A1 (fr) * 2011-11-07 2013-05-10 France Telecom Procede de codage et decodage d'images, dispositif de codage et decodage et programmes d'ordinateur correspondants
EP3399753B1 (en) * 2012-01-20 2019-12-11 Velos Media International Limited Multiple sign bit hiding within a transform unit

Also Published As

Publication number Publication date
CA2801767C (en) 2016-05-17
AU2013200325B2 (en) 2014-12-04
CA2801767A1 (en) 2013-07-20
ES2776925T3 (es) 2020-08-03
CN103220515B (zh) 2016-06-29
EP4447447A2 (en) 2024-10-16
CN103220515A (zh) 2013-07-24
CN105959697B (zh) 2019-04-05
TWI524780B (zh) 2016-03-01
BR102013001124B1 (pt) 2022-04-19
EP4258663A2 (en) 2023-10-11
KR20130085977A (ko) 2013-07-30
EP4258663B1 (en) 2024-10-02
EP3399753A1 (en) 2018-11-07
SG192360A1 (en) 2013-08-30
EP2618572B1 (en) 2016-08-24
EP3644611A1 (en) 2020-04-29
EP4258663A3 (en) 2023-12-20
EP2618572A1 (en) 2013-07-24
EP3644611B1 (en) 2023-09-06
KR101538837B1 (ko) 2015-07-22
BR102013001124A2 (pt) 2018-07-31
EP3094094A1 (en) 2016-11-16
EP3094094B1 (en) 2018-03-28
EP3399753B1 (en) 2019-12-11
CN105959697A (zh) 2016-09-21
TW201340717A (zh) 2013-10-01
JP2013150323A (ja) 2013-08-01
JP5537681B2 (ja) 2014-07-02

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