WO2008146817A1 - Noise eliminating apparatus, program and method - Google Patents

Noise eliminating apparatus, program and method Download PDF

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Publication number
WO2008146817A1
WO2008146817A1 PCT/JP2008/059738 JP2008059738W WO2008146817A1 WO 2008146817 A1 WO2008146817 A1 WO 2008146817A1 JP 2008059738 W JP2008059738 W JP 2008059738W WO 2008146817 A1 WO2008146817 A1 WO 2008146817A1
Authority
WO
WIPO (PCT)
Prior art keywords
planar
directions
determining part
edge
evaluation values
Prior art date
Application number
PCT/JP2008/059738
Other languages
French (fr)
Japanese (ja)
Inventor
Yukihiro Naito
Original Assignee
Olympus Corporation
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 Olympus Corporation filed Critical Olympus Corporation
Publication of WO2008146817A1 publication Critical patent/WO2008146817A1/en

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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
    • G06T5/00—Image enhancement or restoration
    • G06T5/20—Image enhancement or restoration using local operators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40—Picture signal circuits
    • H04N1/409—Edge or detail enhancement; Noise or error suppression

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Picture Signal Circuits (AREA)

Abstract

To achieve a noise elimination exhibiting a high performance of edge preserving by use of a directivity filtering process, while using a small amount of calculation and a small circuit scale to eliminate pattern-like noises causing problems in planar portions. A noise eliminating apparatus is employed wherein an input image is subjected to a filtering process in accordance with the directions of the edge components included in the image, and wherein a coring process is applied which has different characteristics between planar and edge portions of the image. The noise eliminating apparatus comprises an evaluation value calculating part (103) that calculates evaluation values related to a plurality of directions; a direction determining part (105) that determines the directions of the edge components from the evaluation values; a planar degree determining part (107) that distinguishes between the planar and edge portions from the evaluation values; a directivity filtering part (101) that performs the foregoing filtering process based on a result of the direction determining part (105); and a coring part (102) that performs the foregoing coring process based on a result of the planar degree determining part (107).
PCT/JP2008/059738 2007-05-28 2008-05-27 Noise eliminating apparatus, program and method WO2008146817A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007140675A JP2008293425A (en) 2007-05-28 2007-05-28 Noise removal device, program, and method
JP2007-140675 2007-05-28

Publications (1)

Publication Number Publication Date
WO2008146817A1 true WO2008146817A1 (en) 2008-12-04

Family

ID=40075057

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/059738 WO2008146817A1 (en) 2007-05-28 2008-05-27 Noise eliminating apparatus, program and method

Country Status (2)

Country Link
JP (1) JP2008293425A (en)
WO (1) WO2008146817A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010193384A (en) * 2009-02-20 2010-09-02 Olympus Corp Image processing apparatus, method and program
KR101001676B1 (en) 2009-04-27 2010-12-15 전남대학교산학협력단 Edge-protection deblocking filter using pixel classifing
JP5719148B2 (en) * 2010-11-10 2015-05-13 キヤノン株式会社 Imaging apparatus, control method therefor, and program
JP5807420B2 (en) * 2011-07-19 2015-11-10 株式会社Ｊｖｃケンウッド Image noise reduction apparatus and image noise reduction method
JP5824155B2 (en) * 2011-08-30 2015-11-25 トムソン ライセンシングＴｈｏｍｓｏｎ Ｌｉｃｅｎｓｉｎｇ Anisotropic gradient regularization for image denoising, compression and interpolation
JP5821790B2 (en) * 2012-06-27 2015-11-24 株式会社島津製作所 X-ray diagnostic equipment
JP6087612B2 (en) 2012-12-17 2017-03-01 キヤノン株式会社 Image processing apparatus and image processing method
JP6079962B2 (en) * 2013-02-28 2017-02-15 日本電気株式会社 Image processing method and image processing apparatus
JP6164926B2 (en) 2013-05-16 2017-07-19 オリンパス株式会社 Noise reduction processing device
JP6188448B2 (en) 2013-06-26 2017-08-30 オリンパス株式会社 Image processing device
JP6938282B2 (en) * 2017-08-30 2021-09-22 キヤノン株式会社 Image processing equipment, image processing methods and programs

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08223425A (en) * 1995-02-09 1996-08-30 Fuji Photo Film Co Ltd Image processing method and its device
JP2000306089A (en) * 1999-02-17 2000-11-02 Fuji Photo Film Co Ltd Image processor, image processing method and recording medium
JP2001057677A (en) * 1999-06-10 2001-02-27 Fuji Photo Film Co Ltd Image processing method, system and recording medium
JP2004318356A (en) * 2003-04-15 2004-11-11 Olympus Corp Image processing device, image processing method, and its program
JP2005130297A (en) * 2003-10-24 2005-05-19 Olympus Corp System, method and program of signal processing
JP2005295488A (en) * 2004-03-08 2005-10-20 Sharp Corp Image processing apparatus and image processing method
WO2006101128A1 (en) * 2005-03-22 2006-09-28 Olympus Corporation Image processing device and endoscope

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08223425A (en) * 1995-02-09 1996-08-30 Fuji Photo Film Co Ltd Image processing method and its device
JP2000306089A (en) * 1999-02-17 2000-11-02 Fuji Photo Film Co Ltd Image processor, image processing method and recording medium
JP2001057677A (en) * 1999-06-10 2001-02-27 Fuji Photo Film Co Ltd Image processing method, system and recording medium
JP2004318356A (en) * 2003-04-15 2004-11-11 Olympus Corp Image processing device, image processing method, and its program
JP2005130297A (en) * 2003-10-24 2005-05-19 Olympus Corp System, method and program of signal processing
JP2005295488A (en) * 2004-03-08 2005-10-20 Sharp Corp Image processing apparatus and image processing method
WO2006101128A1 (en) * 2005-03-22 2006-09-28 Olympus Corporation Image processing device and endoscope

Also Published As

Publication number Publication date
JP2008293425A (en) 2008-12-04

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