WO2007014850A3 - Method and device for determining quantization parameters in an image - Google Patents

Method and device for determining quantization parameters in an image Download PDF

Info

Publication number
WO2007014850A3
WO2007014850A3 PCT/EP2006/064393 EP2006064393W WO2007014850A3 WO 2007014850 A3 WO2007014850 A3 WO 2007014850A3 EP 2006064393 W EP2006064393 W EP 2006064393W WO 2007014850 A3 WO2007014850 A3 WO 2007014850A3
Authority
WO
WIPO (PCT)
Prior art keywords
image
pixels
bits
groups
quantization parameter
Prior art date
Application number
PCT/EP2006/064393
Other languages
French (fr)
Other versions
WO2007014850A2 (en
Inventor
Meur Olivier Le
Dominique Thoreau
Philippe Guillotel
Original Assignee
Thomson Licensing
Meur Olivier Le
Dominique Thoreau
Philippe Guillotel
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 Thomson Licensing, Meur Olivier Le, Dominique Thoreau, Philippe Guillotel filed Critical Thomson Licensing
Publication of WO2007014850A2 publication Critical patent/WO2007014850A2/en
Publication of WO2007014850A3 publication Critical patent/WO2007014850A3/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
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/189—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding
    • H04N19/192—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding the adaptation method, adaptation tool or adaptation type being iterative or recursive
    • H04N19/194—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding the adaptation method, adaptation tool or adaptation type being iterative or recursive involving only two passes
    • 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
    • H04N19/134—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
    • H04N19/147—Data rate or code amount at the encoder output according to rate distortion criteria
    • 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
    • H04N19/15—Data rate or code amount at the encoder output by monitoring actual compressed data size at the memory before deciding storage at the transmission buffer
    • 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
    • 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
    • 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
    • H04N19/172—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 picture, frame or field
    • 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
    • H04N19/189—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding
    • H04N19/19—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding using optimisation based on Lagrange multipliers
    • 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
    • H04N19/189—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding
    • H04N19/192—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding the adaptation method, adaptation tool or adaptation type being iterative or recursive

Landscapes

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

Abstract

The invention relates to a method for determining a quantization parameter for each group of pixels in an image. It comprises the following steps: - Calculating (10) a preliminary quantization parameter ( qi max) for each of the groups of pixels so as to minimize the variation in reconstruction quality between the groups when the preliminary quantization parameters are used for coding the image with a second number of bits (Cmin), which is less than the first number of bits (Csetpoint); and - Calculating (20) a final quantization parameter (qi* ), which is less than or equal to the preliminary quantization parameter (qi max), for each of the groups of pixels by reallocating the difference in bits between the first and second numbers of bits to the groups of pixels as a function of their content and their perceptual interest.
PCT/EP2006/064393 2005-07-28 2006-07-19 Method and device for determining quantization parameters in an image WO2007014850A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0552345A FR2889381A1 (en) 2005-07-28 2005-07-28 Quantization parameter determining method for coding image in video conference application, involves calculating quantization parameter for each group of pixels in image to minimize variation in reconstruction quality between groups
FR0552345 2005-07-28

Publications (2)

Publication Number Publication Date
WO2007014850A2 WO2007014850A2 (en) 2007-02-08
WO2007014850A3 true WO2007014850A3 (en) 2007-04-12

Family

ID=36177783

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/064393 WO2007014850A2 (en) 2005-07-28 2006-07-19 Method and device for determining quantization parameters in an image

Country Status (2)

Country Link
FR (1) FR2889381A1 (en)
WO (1) WO2007014850A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2963190B1 (en) 2010-07-23 2013-04-26 Canon Kk METHOD AND DEVICE FOR ENCODING AN IMAGE SEQUENCE
EP2549754A1 (en) * 2011-07-19 2013-01-23 Thomson Licensing Method and apparatus for reframing and encoding an original video signal

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997037322A1 (en) * 1996-03-29 1997-10-09 Sarnoff Corporation Apparatus and method for optimizing encoding and performing automated steerable image compression using a perceptual metric
US5754236A (en) * 1995-05-29 1998-05-19 Samsung Electronics Co., Ltd. Variable bit rate coding using the BFOS algorithm
US5819004A (en) * 1995-05-08 1998-10-06 Kabushiki Kaisha Toshiba Method and system for a user to manually alter the quality of previously encoded video frames
WO2003084240A1 (en) * 2002-03-28 2003-10-09 Koninklijke Philips Electronics N.V. Image coding using quantizer scale selection
US20040184535A1 (en) * 1997-03-14 2004-09-23 Microsoft Corporation Motion video signal encoder and encoding method
US6834080B1 (en) * 2000-09-05 2004-12-21 Kabushiki Kaisha Toshiba Video encoding method and video encoding apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5819004A (en) * 1995-05-08 1998-10-06 Kabushiki Kaisha Toshiba Method and system for a user to manually alter the quality of previously encoded video frames
US5754236A (en) * 1995-05-29 1998-05-19 Samsung Electronics Co., Ltd. Variable bit rate coding using the BFOS algorithm
WO1997037322A1 (en) * 1996-03-29 1997-10-09 Sarnoff Corporation Apparatus and method for optimizing encoding and performing automated steerable image compression using a perceptual metric
US20040184535A1 (en) * 1997-03-14 2004-09-23 Microsoft Corporation Motion video signal encoder and encoding method
US6834080B1 (en) * 2000-09-05 2004-12-21 Kabushiki Kaisha Toshiba Video encoding method and video encoding apparatus
WO2003084240A1 (en) * 2002-03-28 2003-10-09 Koninklijke Philips Electronics N.V. Image coding using quantizer scale selection

Also Published As

Publication number Publication date
WO2007014850A2 (en) 2007-02-08
FR2889381A1 (en) 2007-02-02

Similar Documents

Publication Publication Date Title
WO2007092215A3 (en) Method and apparatus for adaptive weight selection for motion compensated prediction
WO2008042259A3 (en) Method for rho-domain frame level bit allocation for effective rate control and enhanced video coding quality
MY147087A (en) Method and apparatus for weighted prediction for scalable video coding
EP1725040A3 (en) Image encoding apparatus and method, computer program, and computer-readable storage medium
WO2008122536A3 (en) Frame buffer compression and decompression method for graphics rendering
WO2008084457A3 (en) Video watermarking
WO2011034380A3 (en) Method and apparatus for encoding and decoding image based on skip mode
EP2309754A3 (en) Image encoding method and image decoding method
EP1571850A3 (en) Apparatus and method for encoding and decoding image containing grayscale alpha channel image
RU2011104784A (en) DEVICE AND METHOD OF QUANTIZATION AND REVERSE QUANTIZATION OF LPC FILTERS IN SUPERFRAME
EP2629523A3 (en) Data compression for video with preprocessing
WO2008007006A3 (en) Device and method of scalable coding and decoding of flow of image data, respective signal and computer program
TW200704203A (en) Method and apparatus for operational frame-layer rate control in video encoder
WO2007050740A3 (en) Methods and apparatus for performing adaptive compression
WO2008067318A3 (en) System and method for allocation of resources for processing video
WO2010024622A3 (en) Method and apparatus for inverse quantizing image, and method and apparatus for decoding image
WO2010001050A3 (en) Method and device for video coding using a small number of movement vectors for the connected blocks
EP1655968A3 (en) Method and apparatus for encoding and decoding image data
WO2011012669A3 (en) Method for decoding a stream of coded data representative of a sequence of images and method for coding a sequence of images
WO2010002122A3 (en) Method and apparatus for encoding and decoding image using image separation based on bit location
JP2006050096A5 (en)
JP2010035146A5 (en)
WO2007028515A3 (en) Determination of coding parameters for a hybrid coding scheme
WO2010072983A3 (en) Method for the segmentation encoding of an image
CN105828089A (en) Video coding method based on self-adaptive perception quantization and video coding system thereof

Legal Events

Date Code Title Description
NENP Non-entry into the national phase

Ref country code: DE

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 06792522

Country of ref document: EP

Kind code of ref document: A2

122 Ep: pct application non-entry in european phase

Ref document number: 06792522

Country of ref document: EP

Kind code of ref document: A2