WO2004062258B1 - Video deblocking method and apparatus - Google Patents

Video deblocking method and apparatus

Info

Publication number
WO2004062258B1
WO2004062258B1 PCT/US2003/040467 US0340467W WO2004062258B1 WO 2004062258 B1 WO2004062258 B1 WO 2004062258B1 US 0340467 W US0340467 W US 0340467W WO 2004062258 B1 WO2004062258 B1 WO 2004062258B1
Authority
WO
WIPO (PCT)
Prior art keywords
pixels
deblocking
amongst
another
block
Prior art date
Application number
PCT/US2003/040467
Other languages
French (fr)
Other versions
WO2004062258A2 (en
WO2004062258A3 (en
Inventor
Zhenghua Yu
Jian Zhang
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Priority to EP03808488A priority Critical patent/EP1579377A4/en
Priority to AU2003303536A priority patent/AU2003303536A1/en
Publication of WO2004062258A2 publication Critical patent/WO2004062258A2/en
Publication of WO2004062258A3 publication Critical patent/WO2004062258A3/en
Publication of WO2004062258B1 publication Critical patent/WO2004062258B1/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
    • H04N19/85—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
    • H04N19/10—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
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/136—Incoming video signal characteristics or properties
    • 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
    • H04N19/17—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 an image region, e.g. an object
    • H04N19/176—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 an image region, e.g. an object the region being a block, e.g. a macroblock
    • 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
    • H04N19/60—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
    • 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

Abstract

Digital video imagery is deblocked as a function of horizontal and/or vertically oriented pixels that share a common attribute (such as a corresponding pixel value). In particular, a deblocking filter can be selected from amongst a plurality of candidate deblocking filters as a function of the presence of pixels that are both adjacent to one another and that are substantially similar to one another. The selected deblocking filter can be applied as a function, at least in part, of a respective center of the pixels that are both adjacent and similar to one another. In one embodiment, luminance information is deblocked pursuant to a process that is different from a deblocking process that is used with chrominance information.

Claims

25
AMENDED CLAIMS
[received by the International Bureau on 04 August 2004 (04.08.04); original claims 10 and 11 cancelled, original claim 12 amended, all remaining claims unchanged]
The metliod of claim 1 wlierein comparing pixels from amongst the plurality of pixels having a predetermined spatial relationship to one another to identify at least one group of pixels that share a common attribute includes locating the respective center of at least one group of pixels within the at least one group of pixels to apply deblocking filters based, at least in part, on the common attribute.
The method of claim 1 wherein selecting a deblocking filter includes selecting a deblocking filter from amongst a plurality of deblocking filters.
7. The metliod of claim 6 wherein selecting a deblocking filter from amongst a plurality of deblocking filters includes selecting a deblocking filter from amongst a plurality of deblocking filters that include at least;
- a strong filter that will affect a majority of the pixels as are contained within a specific grouping of the pixels; and
- a weak filter that will affect only a minority of the pixels as are contained within the specific grouping of the pixels,
8. The method of claim 1 wherein applying the deblocking filter as a function of the respective center includes applying the deblocking filter bilaterally symmetrical with respect to the respective center.
9. The method of claim 1 wherein applying the deblocking filter as a function of the respective center includes applying the deblocking filter bilaterally non- symmetrical with respect to die respective center.
12. A method for deblocking decoded video information that includes luminance information and clirominance information, comprising:
- deblocking the luminance information pursuant to a first deblocking process; and
- deblocking the chrominance information using a deblocking process other than the first deblocking process; wherein deblocking the luminance information pursuant to the first deblocking process includes:
13. The method of claim 12 wherem comparing pixels from amongst the block of pixels having a predetermined spatial relationship to one another includes comparing pixels from amongst the block of pixels that are adjacent to one another.
14. The method of claim 13 wherein comparing pixels from amongst the block of pixels that are adjacent to one another includes at least one of:
- comparing pixels from amongst the block of pixels that are horizontally adjacent to one another; and - comparing pixels from amongst the block of pixels that are vertically adjacent to one another.
15. The method of claim 13 wherein comparing pixels from amongst the block of pixels that are adjacent to one another to identify at least one group of pixels that share a common attribute includes comparing pixels from amongst the block of pixels that are adjacent to one another to identify pairs of pixels that are substantially similar to one another.
PCT/US2003/040467 2002-12-27 2003-12-18 Video deblocking method and apparatus WO2004062258A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP03808488A EP1579377A4 (en) 2002-12-27 2003-12-18 Video deblocking method and apparatus
AU2003303536A AU2003303536A1 (en) 2002-12-27 2003-12-18 Video deblocking method and apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/330,388 US6922492B2 (en) 2002-12-27 2002-12-27 Video deblocking method and apparatus
US10/330,388 2002-12-27

Publications (3)

Publication Number Publication Date
WO2004062258A2 WO2004062258A2 (en) 2004-07-22
WO2004062258A3 WO2004062258A3 (en) 2004-09-10
WO2004062258B1 true WO2004062258B1 (en) 2004-10-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/040467 WO2004062258A2 (en) 2002-12-27 2003-12-18 Video deblocking method and apparatus

Country Status (5)

Country Link
US (1) US6922492B2 (en)
EP (1) EP1579377A4 (en)
CN (1) CN100348046C (en)
AU (1) AU2003303536A1 (en)
WO (1) WO2004062258A2 (en)

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Also Published As

Publication number Publication date
AU2003303536A1 (en) 2004-07-29
EP1579377A2 (en) 2005-09-28
AU2003303536A8 (en) 2004-07-29
US6922492B2 (en) 2005-07-26
WO2004062258A2 (en) 2004-07-22
EP1579377A4 (en) 2011-05-11
CN100348046C (en) 2007-11-07
US20040126034A1 (en) 2004-07-01
CN1742281A (en) 2006-03-01
WO2004062258A3 (en) 2004-09-10

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