CA2394591C - Traitement d'images - Google Patents

Traitement d'images Download PDF

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Publication number
CA2394591C
CA2394591C CA002394591A CA2394591A CA2394591C CA 2394591 C CA2394591 C CA 2394591C CA 002394591 A CA002394591 A CA 002394591A CA 2394591 A CA2394591 A CA 2394591A CA 2394591 C CA2394591 C CA 2394591C
Authority
CA
Canada
Prior art keywords
image
intensity
values
disparity
value
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
CA002394591A
Other languages
English (en)
Other versions
CA2394591A1 (fr
Inventor
Li-Qun Xu
Ebroul Izquierdo
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.)
British Telecommunications PLC
Original Assignee
British Telecommunications PLC
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 British Telecommunications PLC filed Critical British Telecommunications PLC
Publication of CA2394591A1 publication Critical patent/CA2394591A1/fr
Application granted granted Critical
Publication of CA2394591C publication Critical patent/CA2394591C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/10—Segmentation; Edge detection
    • G06T7/12—Edge-based segmentation
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10004—Still image; Photographic image
    • G06T2207/10012—Stereo images
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10028—Range image; Depth image; 3D point clouds
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/20—Image signal generators
    • H04N13/204—Image signal generators using stereoscopic image cameras
    • H04N13/239—Image signal generators using stereoscopic image cameras using two 2D image sensors having a relative position equal to or related to the interocular distance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N2013/0074—Stereoscopic image analysis
    • H04N2013/0081—Depth or disparity estimation from stereoscopic image signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Image Processing (AREA)
  • Nuclear Medicine (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

L'invention, dans un mode de réalisation, concerne un procédé et un système de traitement d'une image enregistrée par un dispositif de formation d'images. Le procédé est formé des étapes suivantes : a) fournir une image contenant un ensemble d'éléments adjacents, chacun correspondant à une partie respective de l'image et comportant une valeur d'intensité respective associée à cette dernière (400), b) traiter les valeurs d'intensité afin de déterminer une valeur de contraste d'intensité pour chaque élément respectif conformément aux différences de valeurs d'intensité entre les éléments adjacents respectifs (402), c) déterminer une valeur de profondeur pour chaque élément correspondant à la distance entre le dispositif de formation d'images et au moins une partie d'un objet formant des images représenté dans l'image par l'élément respectif (404), d) traiter les valeurs de profondeur pour déterminer une valeur de contraste de profondeur pour chaque élément respectif conformément aux différences de valeurs de profondeur entre les éléments adjacents respectifs (406), et traiter ces valeurs de contraste d'intensité et les valeurs de contraste de profondeur pour identifier au moins une zone de l'image correspondant à un ou à plusieurs objets dans l'image étant traitée (408). Cette dernière étape peut être un processus de diffusion non linéaire dans lequel les variations des valeurs de niveau de gris sont diffusées dans les régions correspondant à des objets ou à l'arrière-plan et améliorées dans les régions correspondant aux limites des objets.
CA002394591A 1999-12-10 2000-12-08 Traitement d'images Expired - Fee Related CA2394591C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP99309943.1 1999-12-10
EP99309943 1999-12-10
PCT/GB2000/004707 WO2001043071A2 (fr) 1999-12-10 2000-12-08 Traitement d'images

Publications (2)

Publication Number Publication Date
CA2394591A1 CA2394591A1 (fr) 2001-06-14
CA2394591C true CA2394591C (fr) 2008-02-05

Family

ID=8241795

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002394591A Expired - Fee Related CA2394591C (fr) 1999-12-10 2000-12-08 Traitement d'images

Country Status (4)

Country Link
AU (1) AU2192101A (fr)
CA (1) CA2394591C (fr)
GB (1) GB2372661B (fr)
WO (1) WO2001043071A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE520474C2 (sv) * 2001-11-20 2003-07-15 Anoto Ab Sätt och anordning för identifiering av objekt i digitala bilder
US7283676B2 (en) 2001-11-20 2007-10-16 Anoto Ab Method and device for identifying objects in digital images
US8774512B2 (en) 2009-02-11 2014-07-08 Thomson Licensing Filling holes in depth maps
CN102147922A (zh) * 2011-05-05 2011-08-10 河南工业大学 灰度图像二维Otsu折线阈值分割法
CN104427291B (zh) * 2013-08-19 2018-09-28 华为技术有限公司 一种图像处理方法及设备

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994018797A1 (fr) * 1993-02-09 1994-08-18 Siemens Aktiengesellschaft Procede de segmentation par objets d'images ou de sequences d'images stereoscopiques

Also Published As

Publication number Publication date
GB2372661B (en) 2004-04-21
GB0212972D0 (en) 2002-07-17
CA2394591A1 (fr) 2001-06-14
AU2192101A (en) 2001-06-18
GB2372661A (en) 2002-08-28
WO2001043071A2 (fr) 2001-06-14
WO2001043071A3 (fr) 2002-03-21

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Effective date: 20131210