WO1999013646A3 - Image signal processing method and apparatus - Google Patents

Image signal processing method and apparatus Download PDF

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Publication number
WO1999013646A3
WO1999013646A3 PCT/SE1998/001597 SE9801597W WO9913646A3 WO 1999013646 A3 WO1999013646 A3 WO 1999013646A3 SE 9801597 W SE9801597 W SE 9801597W WO 9913646 A3 WO9913646 A3 WO 9913646A3
Authority
WO
WIPO (PCT)
Prior art keywords
image
image signal
image quality
pixel coefficients
signal
Prior art date
Application number
PCT/SE1998/001597
Other languages
French (fr)
Other versions
WO1999013646A2 (en
Inventor
Lars Farm
Original Assignee
Limt Technology Ab
Lars Farm
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 Limt Technology Ab, Lars Farm filed Critical Limt Technology Ab
Priority to AU91015/98A priority Critical patent/AU9101598A/en
Priority to EP98943163A priority patent/EP1013095A2/en
Publication of WO1999013646A2 publication Critical patent/WO1999013646A2/en
Publication of WO1999013646A3 publication Critical patent/WO1999013646A3/en

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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
    • H04N19/80—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
    • H04N19/10—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
    • H04N19/137—Motion inside a coding unit, e.g. average field, frame or block difference
    • H04N19/139—Analysis of motion vectors, e.g. their magnitude, direction, variance or reliability
    • 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
    • H04N19/14—Coding unit complexity, e.g. amount of activity or edge presence 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
    • H04N19/10—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
    • H04N19/18—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 set of transform coefficients
    • 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
    • H04N19/48—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using compressed domain processing techniques other than decoding, e.g. modification of transform coefficients, variable length coding [VLC] data or run-length data
    • 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
    • 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
    • H04N19/146—Data rate or code amount at the encoder output
    • 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
    • H04N19/146—Data rate or code amount at the encoder output
    • H04N19/152—Data rate or code amount at the encoder output by measuring the fullness of the transmission buffer

Landscapes

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

Abstract

A processing method and apparatus for use in an image signal coding system for coding an input image signal into a compressed output image signal, the image signal comprising digitized image data in a plurality of pixels. Image data preferably being in the frequency domain, is selectively filtered such that image quality of said compressed output signal is prioritised by retaining pixel coefficients contributing significantly to image quality and filtering out the rest of the pixel coefficients under first conditions. Under other conditions, the image data is filtered such that a high achievable compression factor for said set of pixel coefficients is prioritised over image quality of said compressed output signal by filtering out also pixel coefficients contributing significantly to image quality.
PCT/SE1998/001597 1997-09-08 1998-09-08 Image signal processing method and apparatus WO1999013646A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU91015/98A AU9101598A (en) 1997-09-08 1998-09-08 Image signal processing method and apparatus
EP98943163A EP1013095A2 (en) 1997-09-08 1998-09-08 Image signal processing method and apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9703233-8 1997-09-08
SE9703233A SE512832C2 (en) 1997-09-08 1997-09-08 Apparatus and method for processing an image signal

Publications (2)

Publication Number Publication Date
WO1999013646A2 WO1999013646A2 (en) 1999-03-18
WO1999013646A3 true WO1999013646A3 (en) 1999-05-27

Family

ID=20408177

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1998/001597 WO1999013646A2 (en) 1997-09-08 1998-09-08 Image signal processing method and apparatus

Country Status (4)

Country Link
EP (1) EP1013095A2 (en)
AU (1) AU9101598A (en)
SE (1) SE512832C2 (en)
WO (1) WO1999013646A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI367457B (en) 2006-07-03 2012-07-01 Nippon Telegraph & Telephone Image processing method and apparatus, image processing program, and storage medium for storing the program
BRPI0720420A2 (en) 2006-12-28 2014-01-14 Nippon Telegraph & Telephone VIDEO PROCESSING METHOD AND APPARATUS, VIDEO PROCESSING PROGRAM AND STORAGE STORAGE PROGRAM

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5079621A (en) * 1990-06-29 1992-01-07 Eastman Kodak Company Dct transform compression, transmission and recovery of digital color using virtual filtering mechanism
WO1993012613A1 (en) * 1991-12-13 1993-06-24 Avid Technology, Inc. Quantization table adjustment
US5301242A (en) * 1991-05-24 1994-04-05 International Business Machines Corporation Apparatus and method for motion video encoding employing an adaptive quantizer
US5309231A (en) * 1991-06-14 1994-05-03 Kokusai Denshin Denwa Co., Ltd. Adaptive encoding system of moving picture frame
WO1997005748A1 (en) * 1995-07-28 1997-02-13 Polaroid Corporation Jpeg compression circuit with filtering

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04356886A (en) * 1991-05-20 1992-12-10 Seiko Epson Corp Image data compressor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5079621A (en) * 1990-06-29 1992-01-07 Eastman Kodak Company Dct transform compression, transmission and recovery of digital color using virtual filtering mechanism
US5301242A (en) * 1991-05-24 1994-04-05 International Business Machines Corporation Apparatus and method for motion video encoding employing an adaptive quantizer
US5309231A (en) * 1991-06-14 1994-05-03 Kokusai Denshin Denwa Co., Ltd. Adaptive encoding system of moving picture frame
WO1993012613A1 (en) * 1991-12-13 1993-06-24 Avid Technology, Inc. Quantization table adjustment
WO1997005748A1 (en) * 1995-07-28 1997-02-13 Polaroid Corporation Jpeg compression circuit with filtering

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN; & JP 4356886 A (SEIKO EPSON CORP) 10 December 1992. *

Also Published As

Publication number Publication date
SE9703233L (en) 1999-03-09
SE9703233D0 (en) 1997-09-08
SE512832C2 (en) 2000-05-22
EP1013095A2 (en) 2000-06-28
AU9101598A (en) 1999-03-29
WO1999013646A2 (en) 1999-03-18

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