GB201211074D0 - Data encoding and decoding - Google Patents

Data encoding and decoding

Info

Publication number
GB201211074D0
GB201211074D0 GB201211074A GB201211074A GB201211074D0 GB 201211074 D0 GB201211074 D0 GB 201211074D0 GB 201211074 A GB201211074 A GB 201211074A GB 201211074 A GB201211074 A GB 201211074A GB 201211074 D0 GB201211074 D0 GB 201211074D0
Authority
GB
United Kingdom
Prior art keywords
quantisation
step size
luminance
format
chrominance
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.)
Withdrawn
Application number
GB201211074A
Other versions
GB2501552A (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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Publication of GB201211074D0 publication Critical patent/GB201211074D0/en
Priority to PCT/GB2013/051074 priority Critical patent/WO2013160697A1/en
Publication of GB2501552A publication Critical patent/GB2501552A/en
Withdrawn legal-status Critical Current

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
    • 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
    • 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
    • H04N19/103—Selection of coding mode or of prediction mode
    • H04N19/109—Selection of coding mode or of prediction mode among a plurality of temporal predictive coding modes
    • 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
    • H04N19/103—Selection of coding mode or of prediction mode
    • H04N19/11—Selection of coding mode or of prediction mode among a plurality of spatial predictive coding modes
    • 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
    • H04N19/102—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
    • H04N19/12—Selection 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
    • H04N19/122—Selection of transform size, e.g. 8x8 or 2x4x8 DCT; Selection of sub-band transforms of varying structure or type
    • 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
    • H04N19/124—Quantisation
    • H04N19/126—Details of normalisation or weighting functions, e.g. normalisation matrices or variable uniform quantisers
    • 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
    • H04N19/129—Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]
    • 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
    • H04N19/13—Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
    • 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
    • H04N19/463—Embedding additional information in the video signal during the compression process by compressing encoding parameters before transmission

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Color Television Systems (AREA)

Abstract

Video coding / decoding quantises blocks of frequency-transformed luminance and chrominance component video data in a 4:4:4 or a 4:2:2 format according to a selected quantisation parameter which defines a quantisation step size. A quantisation parameter is defined as an association between luminance and chrominance quantisation parameters. The association is such that a maximum chrominance quantisation step size is less than a maximum luminance quantisation step size for the 4:2:2 format, but equal to the maximum luminance quantisation step size for the 4:4:4 format. Each component of the frequency-transformed data is quantised according to a respective value derived from the respective quantisation step size and the result is rounded to an integer value to generate a corresponding block of quantised spatial frequency data.
GB1211074.8A 2012-04-26 2012-06-22 Video Data Encoding / Decoding with Different Max Chrominance Quantisation Steps for 4:2:2 and 4:4:4 Format Withdrawn GB2501552A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/GB2013/051074 WO2013160697A1 (en) 2012-04-26 2013-04-26 Quantisation parameter selection for different colour sampling formats

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB201200749 2012-04-26

Publications (2)

Publication Number Publication Date
GB201211074D0 true GB201211074D0 (en) 2012-08-01
GB2501552A GB2501552A (en) 2013-10-30

Family

ID=46641469

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1211074.8A Withdrawn GB2501552A (en) 2012-04-26 2012-06-22 Video Data Encoding / Decoding with Different Max Chrominance Quantisation Steps for 4:2:2 and 4:4:4 Format

Country Status (1)

Country Link
GB (1) GB2501552A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110999296A (en) * 2017-06-21 2020-04-10 Vid拓展公司 Adaptive quantization for 360 degree video coding

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022071847A1 (en) * 2020-09-29 2022-04-07 Telefonaktiebolaget Lm Ericsson (Publ) Filter strength control for adaptive loop filtering

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8711925B2 (en) * 2006-05-05 2014-04-29 Microsoft Corporation Flexible quantization

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110999296A (en) * 2017-06-21 2020-04-10 Vid拓展公司 Adaptive quantization for 360 degree video coding
CN110999296B (en) * 2017-06-21 2022-09-02 Vid拓展公司 Method, apparatus and computer readable medium for decoding 360 degree video

Also Published As

Publication number Publication date
GB2501552A (en) 2013-10-30

Similar Documents

Publication Publication Date Title
PH12014502365A1 (en) Quantization parameter (qp) coding in video coding
PH12017502250A1 (en) Grouping palette bypass bins for video coding
PH12016502084A1 (en) Apparatus of decoding video data
PH12015500846A1 (en) Method and apparatus for encoding and decoding image by using large transform unit
WO2013166395A3 (en) Transform skipping and lossless coding unification
MX2014012565A (en) Non-square transform units for video coding.
WO2014026130A3 (en) Transform-domain intra prediction
WO2012005549A3 (en) Methods and apparatuses for encoding and decoding motion vector
MY168806A (en) Linear prediction based audio coding using improved probability distribution estimation
GB2518061A (en) Techniques for video compression
GB201211074D0 (en) Data encoding and decoding
GB201306212D0 (en) Video coding and decoding

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)