FR2893738B1 - Reduction de bruit dans une image numerique par transformee en cosinus discrete. - Google Patents

Reduction de bruit dans une image numerique par transformee en cosinus discrete.

Info

Publication number
FR2893738B1
FR2893738B1 FR0512103A FR0512103A FR2893738B1 FR 2893738 B1 FR2893738 B1 FR 2893738B1 FR 0512103 A FR0512103 A FR 0512103A FR 0512103 A FR0512103 A FR 0512103A FR 2893738 B1 FR2893738 B1 FR 2893738B1
Authority
FR
France
Prior art keywords
array
noise
transformed
reduction
digital image
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
FR0512103A
Other languages
English (en)
Other versions
FR2893738A1 (fr
Inventor
Pascal Hannequin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR0512103A priority Critical patent/FR2893738B1/fr
Priority to CA002629818A priority patent/CA2629818A1/fr
Priority to EP06831120A priority patent/EP1949337A1/fr
Priority to US12/093,345 priority patent/US20080279472A1/en
Priority to PCT/FR2006/002523 priority patent/WO2007057561A1/fr
Publication of FR2893738A1 publication Critical patent/FR2893738A1/fr
Application granted granted Critical
Publication of FR2893738B1 publication Critical patent/FR2893738B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • G06T5/00—Image enhancement or restoration
    • G06T5/10—Image enhancement or restoration using non-spatial domain filtering
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10072—Tomographic images
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10116—X-ray image
    • G06T2207/10128—Scintigraphy
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/20—Special algorithmic details
    • G06T2207/20048—Transform domain processing
    • G06T2207/20052—Discrete cosine transform [DCT]

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Image Processing (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
FR0512103A 2005-11-18 2005-11-18 Reduction de bruit dans une image numerique par transformee en cosinus discrete. Expired - Fee Related FR2893738B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR0512103A FR2893738B1 (fr) 2005-11-18 2005-11-18 Reduction de bruit dans une image numerique par transformee en cosinus discrete.
CA002629818A CA2629818A1 (fr) 2005-11-18 2006-11-15 Reduction de bruit dans une image numerique par transformee en cosinus discrete
EP06831120A EP1949337A1 (fr) 2005-11-18 2006-11-15 Reduction de bruit dans une image numerique par transformee en cosinus discrete
US12/093,345 US20080279472A1 (en) 2005-11-18 2006-11-15 Noise Reduction in a Digital Image by Discreter Cosine Transform
PCT/FR2006/002523 WO2007057561A1 (fr) 2005-11-18 2006-11-15 Reduction de bruit dans une image numerique par transformee en cosinus discrete

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0512103A FR2893738B1 (fr) 2005-11-18 2005-11-18 Reduction de bruit dans une image numerique par transformee en cosinus discrete.

Publications (2)

Publication Number Publication Date
FR2893738A1 FR2893738A1 (fr) 2007-05-25
FR2893738B1 true FR2893738B1 (fr) 2007-12-28

Family

ID=36609412

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0512103A Expired - Fee Related FR2893738B1 (fr) 2005-11-18 2005-11-18 Reduction de bruit dans une image numerique par transformee en cosinus discrete.

Country Status (5)

Country Link
US (1) US20080279472A1 (fr)
EP (1) EP1949337A1 (fr)
CA (1) CA2629818A1 (fr)
FR (1) FR2893738B1 (fr)
WO (1) WO2007057561A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101523441B (zh) * 2006-09-29 2012-01-18 汤姆逊许可证公司 空间活动量度和用于评价空间活动量度的方法
JP6105903B2 (ja) * 2012-11-09 2017-03-29 キヤノン株式会社 画像処理装置、画像処理方法、放射線撮影システム及びプログラム
US10261195B2 (en) * 2015-08-07 2019-04-16 Koninklijke Philips N.V. Imaging detector with improved spatial accuracy

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5654910A (en) * 1992-08-26 1997-08-05 Sony Corporation Processing method and apparatus for performing 4 ×4 discrete cosine transformation or inverse discrete cosing transformation
US5497777A (en) * 1994-09-23 1996-03-12 General Electric Company Speckle noise filtering in ultrasound imaging
KR20020022672A (ko) * 2000-03-24 2002-03-27 요트.게.아. 롤페즈 영상을 향상시키기 위한 전자 회로 및 방법
WO2002102056A1 (fr) * 2001-06-06 2002-12-19 Sharp Kabushiki Kaisha Procede de codage d'image et appareil d'imagerie
FR2833445B1 (fr) * 2001-12-12 2004-02-27 Pascal Hannequin Procede et dispositif de traitement d'images a bas niveau

Also Published As

Publication number Publication date
CA2629818A1 (fr) 2007-05-24
FR2893738A1 (fr) 2007-05-25
WO2007057561A1 (fr) 2007-05-24
EP1949337A1 (fr) 2008-07-30
US20080279472A1 (en) 2008-11-13

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Effective date: 20130731