GB201118445D0 - Method and apparatus for processing components of an image - Google Patents

Method and apparatus for processing components of an image

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Publication number
GB201118445D0
GB201118445D0 GB201118445A GB201118445A GB201118445D0 GB 201118445 D0 GB201118445 D0 GB 201118445D0 GB 201118445 A GB201118445 A GB 201118445A GB 201118445 A GB201118445 A GB 201118445A GB 201118445 D0 GB201118445 D0 GB 201118445D0
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United Kingdom
Prior art keywords
type
samples
model parameter
model
image
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
GB201118445A
Other versions
GB2495942A (en
GB2495942B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
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Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to GB1118445.4A priority Critical patent/GB2495942B/en
Publication of GB201118445D0 publication Critical patent/GB201118445D0/en
Publication of GB2495942A publication Critical patent/GB2495942A/en
Application granted granted Critical
Publication of GB2495942B publication Critical patent/GB2495942B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/593—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
    • 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
    • H04N19/186—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 a colour or a chrominance component

Landscapes

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

Abstract

Components (e.g. luma, chroma) of an image are processed, the image being composed of at least a first and a second, different, type of component. Samples of the second type are predictable (406) from samples of the first type (401, 402, 403) using a prediction model linking the first and second types. The link is represented in the model by at least one model parameter. The value of an intermediate model parameter (404) used to obtain the prediction model parameter, or the value of the model parameter itself, is adjusted (e.g. according to a correction parameter), and samples of the second type are predicted from filtered or non-filtered samples of the first type using the model and model parameter(s) (405) based on the adjusted intermediate model parameter value or the adjusted model parameter. Also disclosed is filtering the samples of the first type using a filter (i) having integer only coefficients and/or (ii) avoiding using left shift operations and/or (iii) avoiding using right shift operations. Samples are predicted of the second type from the filtered samples of the first type using the prediction model.
GB1118445.4A 2011-10-25 2011-10-25 Method and apparatus for processing components of an image Active GB2495942B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1118445.4A GB2495942B (en) 2011-10-25 2011-10-25 Method and apparatus for processing components of an image

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1118445.4A GB2495942B (en) 2011-10-25 2011-10-25 Method and apparatus for processing components of an image

Publications (3)

Publication Number Publication Date
GB201118445D0 true GB201118445D0 (en) 2011-12-07
GB2495942A GB2495942A (en) 2013-05-01
GB2495942B GB2495942B (en) 2014-09-03

Family

ID=45373408

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1118445.4A Active GB2495942B (en) 2011-10-25 2011-10-25 Method and apparatus for processing components of an image

Country Status (1)

Country Link
GB (1) GB2495942B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2591379B (en) * 2018-01-03 2023-02-15 Beijing Bytedance Network Tech Co Ltd Single-line cross component linear model prediction mode
TWI814890B (en) 2018-08-17 2023-09-11 大陸商北京字節跳動網絡技術有限公司 Simplified cross component prediction
TWI827675B (en) * 2018-09-12 2024-01-01 大陸商北京字節跳動網絡技術有限公司 Size dependent down-sampling in cross component linear model
WO2020094059A1 (en) 2018-11-06 2020-05-14 Beijing Bytedance Network Technology Co., Ltd. Complexity reduction in parameter derivation for intra prediction
CN113170122B (en) 2018-12-01 2023-06-27 北京字节跳动网络技术有限公司 Parameter derivation for intra prediction
KR20210091182A (en) 2018-12-07 2021-07-21 베이징 바이트댄스 네트워크 테크놀로지 컴퍼니, 리미티드 Context-Based Intra Prediction
WO2020169102A1 (en) 2019-02-24 2020-08-27 Beijing Bytedance Network Technology Co., Ltd. Parameter derivation for intra prediction

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2795276B1 (en) * 1999-06-15 2001-08-03 Canon Kk FLOW CONTROL OF A LOST DIGITAL DATA COMPRESSION SYSTEM
GB2366679A (en) * 2000-09-05 2002-03-13 Sony Uk Ltd Processing data having multiple components
KR101266168B1 (en) * 2006-08-16 2013-05-21 삼성전자주식회사 Method and apparatus for encoding, decoding video

Also Published As

Publication number Publication date
GB2495942A (en) 2013-05-01
GB2495942B (en) 2014-09-03

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