AU2001230274A1 - A method for filtering digital images, and a filtering device - Google Patents

A method for filtering digital images, and a filtering device

Info

Publication number
AU2001230274A1
AU2001230274A1 AU2001230274A AU3027401A AU2001230274A1 AU 2001230274 A1 AU2001230274 A1 AU 2001230274A1 AU 2001230274 A AU2001230274 A AU 2001230274A AU 3027401 A AU3027401 A AU 3027401A AU 2001230274 A1 AU2001230274 A1 AU 2001230274A1
Authority
AU
Australia
Prior art keywords
filtering
digital images
decoded
current block
block
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.)
Abandoned
Application number
AU2001230274A
Inventor
Bogdan-Paul Dobrin
Marta Karczewicz
Jani Lainema
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.)
Nokia Oyj
Original Assignee
Nokia Mobile Phones 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
Priority claimed from FI20000122A external-priority patent/FI20000122A0/en
Application filed by Nokia Mobile Phones Ltd filed Critical Nokia Mobile Phones Ltd
Publication of AU2001230274A1 publication Critical patent/AU2001230274A1/en
Abandoned 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
    • H04N19/50—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
    • H04N19/527—Global motion vector 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
    • H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
    • H04N19/86—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving reduction of coding artifacts, e.g. of blockiness
    • 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
    • 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
    • H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
    • H04N19/89—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving methods or arrangements for detection of transmission errors at the decoder
    • H04N19/895—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving methods or arrangements for detection of transmission errors at the decoder in combination with error concealment

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Processing (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Holo Graphy (AREA)
  • Color Television Systems (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

The invention relates to a method for reducing visual artefacts in a digital image, which is coded by blocks (B 1 , B 2 , B 3 , B 4 ) and then decoded. In the method filtering is performed to reduce visual artefacts due to a boundary (R 12 , R 13 , R 24 , R 34 ) between a current block and an adjacent block (B 1 , B 2 , B 3 , B 4 ). The filtering is performed after the current block (B 1 , B 2 , B 3 , B 4 ) is decoded and there is a boundary available for filtering between the current block and a previously decoded block.
AU2001230274A 2000-01-21 2001-01-22 A method for filtering digital images, and a filtering device Abandoned AU2001230274A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
FI20000122 2000-01-21
FI20000122A FI20000122A0 (en) 2000-01-21 2000-01-21 Method of filtering digital images and filtering device
FI20000141A FI117534B (en) 2000-01-21 2000-01-24 A method for filtering digital images and a filter
FI20000141 2000-01-24
PCT/FI2001/000048 WO2001054414A1 (en) 2000-01-21 2001-01-22 A method for filtering digital images, and a filtering device

Publications (1)

Publication Number Publication Date
AU2001230274A1 true AU2001230274A1 (en) 2001-07-31

Family

ID=26160929

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001230274A Abandoned AU2001230274A1 (en) 2000-01-21 2001-01-22 A method for filtering digital images, and a filtering device

Country Status (13)

Country Link
US (1) US7388996B2 (en)
EP (1) EP1264486B1 (en)
JP (2) JP2003520530A (en)
KR (1) KR100754461B1 (en)
CN (1) CN100568973C (en)
AT (1) ATE420534T1 (en)
AU (1) AU2001230274A1 (en)
BR (1) BR0107757A (en)
CA (1) CA2396941C (en)
DE (1) DE60137315D1 (en)
FI (1) FI117534B (en)
HK (1) HK1054289A1 (en)
WO (1) WO2001054414A1 (en)

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KR101379255B1 (en) * 2007-04-06 2014-03-28 삼성전자주식회사 Method and apparatus for encoding and decoding based on intra prediction using differential equation
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Also Published As

Publication number Publication date
CA2396941C (en) 2005-10-18
KR20030003222A (en) 2003-01-09
ATE420534T1 (en) 2009-01-15
CN100568973C (en) 2009-12-09
FI117534B (en) 2006-11-15
DE60137315D1 (en) 2009-02-26
FI20000141A0 (en) 2000-01-24
FI20000141A (en) 2001-07-22
KR100754461B1 (en) 2007-09-03
JP4990701B2 (en) 2012-08-01
JP2007300676A (en) 2007-11-15
US7388996B2 (en) 2008-06-17
WO2001054414A1 (en) 2001-07-26
US20010019634A1 (en) 2001-09-06
HK1054289A1 (en) 2003-11-21
BR0107757A (en) 2002-11-12
CN1416650A (en) 2003-05-07
CA2396941A1 (en) 2001-07-26
EP1264486A1 (en) 2002-12-11
EP1264486B1 (en) 2009-01-07
JP2003520530A (en) 2003-07-02

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