WO2006131866A3 - Method and system for image processing - Google Patents

Method and system for image processing Download PDF

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Publication number
WO2006131866A3
WO2006131866A3 PCT/IB2006/051772 IB2006051772W WO2006131866A3 WO 2006131866 A3 WO2006131866 A3 WO 2006131866A3 IB 2006051772 W IB2006051772 W IB 2006051772W WO 2006131866 A3 WO2006131866 A3 WO 2006131866A3
Authority
WO
WIPO (PCT)
Prior art keywords
image
pixel
block
gradients
average
Prior art date
Application number
PCT/IB2006/051772
Other languages
French (fr)
Other versions
WO2006131866A2 (en
Inventor
Radu Serban Jasinschi
Original Assignee
Koninkl Philips Electronics Nv
Radu Serban Jasinschi
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 Koninkl Philips Electronics Nv, Radu Serban Jasinschi filed Critical Koninkl Philips Electronics Nv
Publication of WO2006131866A2 publication Critical patent/WO2006131866A2/en
Publication of WO2006131866A3 publication Critical patent/WO2006131866A3/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/70—Denoising; Smoothing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/40—Analysis of texture
    • G06T7/41—Analysis of texture based on statistical description of texture
    • G06T7/44—Analysis of texture based on statistical description of texture using image operators, e.g. filters, edge density metrics or local histograms

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Probability & Statistics with Applications (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Image Processing (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Image Analysis (AREA)

Abstract

A method and system for image processing based on image texture information provides steps for detecting a texture component based on image gradients of an image that includes (i) computing (106) spatial image gradients of the image; (ii) determining (108) a value for a weighted image gradient per pixel within an image block representing an average energy of the image gradients; (iii) computing (110) an average value and a variance value per image block; and (iv) processing (112) the image for quality improvement. A processing step follows with a given threshold. Thereafter, if the pixel within the image block has an image gradient average greater than the threshold, the image is classified as including a 'texture' image area and the pixel within the image block is enhanced. However, if the image gradient average is smaller than the threshold, the image is classified as including a 'smooth' image area and enhanced by smoothing the pixel within the image block.
PCT/IB2006/051772 2005-06-08 2006-06-02 Method and system for image processing WO2006131866A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05300466.9 2005-06-08
EP05300466 2005-06-08

Publications (2)

Publication Number Publication Date
WO2006131866A2 WO2006131866A2 (en) 2006-12-14
WO2006131866A3 true WO2006131866A3 (en) 2007-03-29

Family

ID=37027054

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2006/051772 WO2006131866A2 (en) 2005-06-08 2006-06-02 Method and system for image processing

Country Status (1)

Country Link
WO (1) WO2006131866A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101578868B (en) 2006-12-28 2012-11-07 汤姆逊许可证公司 Method, device and video encoder for video processing digital video content
JP5269877B2 (en) * 2007-04-09 2013-08-21 テクトロニクス・インコーポレイテッド Test video frame measurement method
CN109993824B (en) * 2017-12-29 2023-08-04 深圳市优必选科技有限公司 Image processing method, intelligent terminal and device with storage function
CN111476194B (en) * 2020-04-20 2024-02-27 海信集团有限公司 Detection method for working state of sensing module and refrigerator
CN113034481A (en) * 2021-04-02 2021-06-25 广州绿怡信息科技有限公司 Equipment image blur detection method and device
CN113592801A (en) * 2021-07-23 2021-11-02 浙江大华技术股份有限公司 Method and device for detecting stripe interference of video image

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0797349A2 (en) * 1996-03-23 1997-09-24 Samsung Electronics Co., Ltd. Signal adaptive postprocessing system for reducing blocking effects and ringing noise
GB2323994A (en) * 1997-04-04 1998-10-07 Samsung Electronics Co Ltd Filtering image data to reduce ringing noise
EP1017239A2 (en) * 1998-12-31 2000-07-05 Eastman Kodak Company A method for removing artifacts in an electronic image decoded from a block-transform coded image
US20030053711A1 (en) * 2001-09-20 2003-03-20 Changick Kim Reducing blocking and ringing artifacts in low-bit-rate coding
US20030081854A1 (en) * 2001-06-12 2003-05-01 Deshpande Sachin G. Filter for combined de-ringing and edge sharpening

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0797349A2 (en) * 1996-03-23 1997-09-24 Samsung Electronics Co., Ltd. Signal adaptive postprocessing system for reducing blocking effects and ringing noise
GB2323994A (en) * 1997-04-04 1998-10-07 Samsung Electronics Co Ltd Filtering image data to reduce ringing noise
EP1017239A2 (en) * 1998-12-31 2000-07-05 Eastman Kodak Company A method for removing artifacts in an electronic image decoded from a block-transform coded image
US20030081854A1 (en) * 2001-06-12 2003-05-01 Deshpande Sachin G. Filter for combined de-ringing and edge sharpening
US20030053711A1 (en) * 2001-09-20 2003-03-20 Changick Kim Reducing blocking and ringing artifacts in low-bit-rate coding

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JIWU H ET AL: "POSTFILTERING OF BLOCK EFFECTS BY EDGE MAP ANALYSIS", PROCEEDINGS OF THE IASTED/ISMM INTERNATIONAL CONFERENCE, 11 November 1996 (1996-11-11), pages 233 - 236, XP000770120 *

Also Published As

Publication number Publication date
WO2006131866A2 (en) 2006-12-14

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