WO2003026311A3 - Video compression - Google Patents

Video compression Download PDF

Info

Publication number
WO2003026311A3
WO2003026311A3 PCT/GB2002/004260 GB0204260W WO03026311A3 WO 2003026311 A3 WO2003026311 A3 WO 2003026311A3 GB 0204260 W GB0204260 W GB 0204260W WO 03026311 A3 WO03026311 A3 WO 03026311A3
Authority
WO
WIPO (PCT)
Prior art keywords
decoder
image
available
coding
prediction
Prior art date
Application number
PCT/GB2002/004260
Other languages
French (fr)
Other versions
WO2003026311A2 (en
Inventor
Graham Alexander Thomas
Timothy John Borer
Original Assignee
British Broadcasting Corp
Graham Alexander Thomas
Timothy John Borer
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 British Broadcasting Corp, Graham Alexander Thomas, Timothy John Borer filed Critical British Broadcasting Corp
Publication of WO2003026311A2 publication Critical patent/WO2003026311A2/en
Publication of WO2003026311A3 publication Critical patent/WO2003026311A3/en

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
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/59—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial sub-sampling or interpolation, e.g. alteration of picture size or resolution
    • 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
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/513—Processing of motion vectors
    • H04N19/517—Processing of motion vectors by encoding
    • 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
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/523—Motion estimation or motion compensation with sub-pixel accuracy
    • 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
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/53—Multi-resolution motion estimation; Hierarchical motion estimation
    • 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
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/56—Motion estimation with initialisation of the vector search, e.g. estimating a good candidate to initiate a search
    • 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

Abstract

Disclosed is a method for coding video in which a predetermined algorithm is used to predict portions of the image based on information that will already be available to the decoder at the time of decoding the image. By using known corresponding algorithms in both coder and decoder, and only information that will be available to the decoder, the need to transmit detailed information regarding choices made in coding, e.g. motion vectors is avoided. However, a vector relationship can still be derived for use in the prediction. Prediction can be made based on an assumption that the content of the portion to be coded is similar to the content of an associated image portion, and by determining a vector relating the associated image portion to a reference image (both of which will be available to the decoder), the current image portion can be predicted from a further part of the reference image. The invention can be used in a form of modified pyramid coding.
PCT/GB2002/004260 2001-09-18 2002-09-18 Video compression WO2003026311A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0122526.7 2001-09-18
GB0122526A GB2379821A (en) 2001-09-18 2001-09-18 Image compression method for providing a serially compressed sequence

Publications (2)

Publication Number Publication Date
WO2003026311A2 WO2003026311A2 (en) 2003-03-27
WO2003026311A3 true WO2003026311A3 (en) 2003-12-31

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2002/004260 WO2003026311A2 (en) 2001-09-18 2002-09-18 Video compression

Country Status (2)

Country Link
GB (1) GB2379821A (en)
WO (1) WO2003026311A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2401502B (en) * 2003-05-07 2007-02-14 British Broadcasting Corp Data processing

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0420653A2 (en) * 1989-09-29 1991-04-03 Victor Company Of Japan, Ltd. Motion picture data coding/decoding system having motion vector coding unit and decoding unit
US5351095A (en) * 1989-08-29 1994-09-27 Thomson Consumer Electronics Method and device for estimating and hierarchically coding the motion of sequences of images
US5905535A (en) * 1994-10-10 1999-05-18 Thomson Multimedia S.A. Differential coding of motion vectors using the median of candidate vectors
US5978048A (en) * 1997-09-25 1999-11-02 Daewoo Electronics Co., Inc. Method and apparatus for encoding a motion vector based on the number of valid reference motion vectors

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0748859B2 (en) * 1986-08-11 1995-05-24 国際電信電話株式会社 Predictive coding method for television signals
US6049330A (en) * 1997-08-28 2000-04-11 Oak Technology, Inc. Method and apparatus for optimizing storage of compressed images in memory
JP2003533103A (en) * 2000-04-27 2003-11-05 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Video compression method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5351095A (en) * 1989-08-29 1994-09-27 Thomson Consumer Electronics Method and device for estimating and hierarchically coding the motion of sequences of images
EP0420653A2 (en) * 1989-09-29 1991-04-03 Victor Company Of Japan, Ltd. Motion picture data coding/decoding system having motion vector coding unit and decoding unit
US5905535A (en) * 1994-10-10 1999-05-18 Thomson Multimedia S.A. Differential coding of motion vectors using the median of candidate vectors
US5978048A (en) * 1997-09-25 1999-11-02 Daewoo Electronics Co., Inc. Method and apparatus for encoding a motion vector based on the number of valid reference motion vectors

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
KIM J W ET AL: "VIDEO CODING WITH R-D CONSTRAINED HIERARCHICAL VARIABLE BLOCK SIZE (VBS) MOTION ESTIMATION", JOURNAL OF VISUAL COMMUNICATION AND IMAGE REPRESENTATION, ACADEMIC PRESS, INC, US, vol. 9, no. 3, 1998, pages 243 - 254, XP000914354, ISSN: 1047-3203 *
OHM J-R: "Motion-compensated 3-D subband coding with multiresolution representation of motion parameters", PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON IMAGE PROCESSING (ICIP) AUSTIN, NOV. 13 - 16, 1994, LOS ALAMITOS, IEEE COMP. SOC. PRESS, US, vol. 3 CONF. 1, 13 November 1994 (1994-11-13), pages 250 - 254, XP010146425, ISBN: 0-8186-6952-7 *

Also Published As

Publication number Publication date
GB2379821A (en) 2003-03-19
GB0122526D0 (en) 2001-11-07
WO2003026311A2 (en) 2003-03-27

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