GB2372661A - Image processing - Google Patents

Image processing Download PDF

Info

Publication number
GB2372661A
GB2372661A GB0212972A GB0212972A GB2372661A GB 2372661 A GB2372661 A GB 2372661A GB 0212972 A GB0212972 A GB 0212972A GB 0212972 A GB0212972 A GB 0212972A GB 2372661 A GB2372661 A GB 2372661A
Authority
GB
United Kingdom
Prior art keywords
image
processing
depth
intensity
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.)
Granted
Application number
GB0212972A
Other versions
GB2372661B (en
GB0212972D0 (en
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 GB0212972D0 publication Critical patent/GB0212972D0/en
Publication of GB2372661A publication Critical patent/GB2372661A/en
Application granted granted Critical
Publication of GB2372661B publication Critical patent/GB2372661B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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; 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
    • G06T2207/10004—Still image; Photographic image
    • G06T2207/10012—Stereo 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
    • G06T2207/10028—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

Abstract

One respect of the invention concerns a method and system for processing an image recorded by an imaging device. The method comprises the steps of: a) providing an image comprising an array of adjacent elements each corresponding to a respective part of the image and having a respective intensity value associated therewith (400); b) processing the intensity values to determine an intensity contrast value for each respective element according to differences in intensity values between respective adjacent elements (402); c) determining a depth value for each element correspondingt to the distance between the imaging device and at least part of an image forming object represented in the image by the respective element (404); d) processing the depth values to determine a depth contrast value for each respective.

Description

2,UK Patent Application 'g,GB,,,2 372 661 HA (43) Date of Printing by UK
Office 28.08.2002 (211 Application No 0212972.4 (51) INTCL7 G06T 5/00
(22) Date of Filing 08.12.2000 (52) UK CL (Edition T) (30) Priority Data H4F FGXD F3L (31) 99309943 (32) 10.12.1999 (33) EP
(56) Documents Cited by ISA (86) International Application Data WO 1994/018797 A PCT/GB2000/004707 En 08.12.2000 "A Segmentation-Based Multiple-Baseline Stereo (SOBS} Scheme for Acquisition of Depth in 3-D (87) International Publication Data Scenes", lEICE TRANS. ON INF. AND SYSTEMS, JP, WO2001/043071 En 14.06.2001 INSTITUTE OF ELECTRONICS INFORMATION AND COMM. ENG. TOKYO, vol. E81-D, No. 2, 1 Feb. 1998, pages 215-223, IMORI T ET AL.
(71) Applicant(s) "Stereo Correspondence by Surface Segmentation", British Telecommunications public limited company Liang-Hua Chen et al., PROCEEDINGS OF THE incorporated in the United Kingdom) INTERNATIONAL CONFERENCE ON SYSTEMS, MAN, 81 Newgate Street, LONDON, EC1A 7AJ, AND CYBERNETICS, US, NEW YORK, IEEE, 1992, United Kingdom pages 593-598 (72) Inventor(s) (58) Field of Search by ISA
Li-Qun Xu INT CL7 GUST Ebroul Izquierdo ONLINE: EPO-INTERNAL, PAJ, INSPEC, WPI DATA (74) continued overleaf (54) Abstract Title Image processing (57) One respect of the invention concerns a method and system for processing an image recorded by an imaging = device. The method comprises the steps of: a) providing an image comprising an array of adjacent elements each READ too corresponding to a respective part of the image and noM MEMORY having a respective intensity value associated therewith r- . -
(400; b} processing the intensity values to determine an om NE intensity contrast value for each respective element G"Y ZV" according to differences in intensity values between ' coKraAsTvA ur respective adjacent elements (402,; c, determining a depth A--. + _ __, value for each element correspondingt to the distance between the imaging device and at least part of an image DWAPUSY/DEP!H forming object represented in the image by the respective VALE element (404; d) processing the depth values to determine.
a depth contrast value for each respective. DETERMINE DISPA 'DE"H i coNwr! -! IMAGEslMtLl"CA=ON | 408 LO J BY DATA eaves _ NON.LINEAR Dlm'SlON! W | DEIUUtillE 410 | V ALUE l | EXT ACrOBJECr(S) | 12 I FROM l! - GE ' ' 3 IS)
D
(74) Agent and/or Address for Service Barry George William Lloyd BT Group Legal Services, Intellectual Property Department,Holborn Centre, 120 Holborn, LONDON, EC1N ATE, United Kingdom
GB0212972A 1999-12-10 2000-12-08 Image processing Expired - Lifetime GB2372661B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP99309943 1999-12-10
PCT/GB2000/004707 WO2001043071A2 (en) 1999-12-10 2000-12-08 Image processing

Publications (3)

Publication Number Publication Date
GB0212972D0 GB0212972D0 (en) 2002-07-17
GB2372661A true GB2372661A (en) 2002-08-28
GB2372661B GB2372661B (en) 2004-04-21

Family

ID=8241795

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0212972A Expired - Lifetime GB2372661B (en) 1999-12-10 2000-12-08 Image processing

Country Status (4)

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7283676B2 (en) 2001-11-20 2007-10-16 Anoto Ab Method and device for identifying objects in digital images
SE520474C2 (en) * 2001-11-20 2003-07-15 Anoto Ab Methods and apparatus for identifying objects in digital images
US8774512B2 (en) 2009-02-11 2014-07-08 Thomson Licensing Filling holes in depth maps
CN102147922A (en) * 2011-05-05 2011-08-10 河南工业大学 Two-dimensional Otsu broken line threshold segmentation method for gray image

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994018797A1 (en) * 1993-02-09 1994-08-18 Siemens Aktiengesellschaft Object-oriented segmentation process of stereoscopic images or image sequences

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994018797A1 (en) * 1993-02-09 1994-08-18 Siemens Aktiengesellschaft Object-oriented segmentation process of stereoscopic images or image sequences

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"A Segmentation-Based Multiple-Baseline Stereo (SMBS) Scheme for Acquisition of Depth in 3-D Scenes", IEICE TRANS. ON INF. AND SYSTEMS, JP, INSTITUTE OF ELECTRONICS INFORMATION AND COMM. ENG. TOKYO, vol. E81-D, No. 2, 1 Feb. 1998, pages 215-223, IMORI T ET AL. *
"Stereo Correspondence by Surface Segmentation", Liang-Hua Chen et al., PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON SYSTEMS, MAN, AND CYBERNETICS, US, NEW YORK, IEEE, 1992, pages 593-598 *

Also Published As

Publication number Publication date
GB2372661B (en) 2004-04-21
AU2192101A (en) 2001-06-18
CA2394591A1 (en) 2001-06-14
GB0212972D0 (en) 2002-07-17
WO2001043071A3 (en) 2002-03-21
CA2394591C (en) 2008-02-05
WO2001043071A2 (en) 2001-06-14

Similar Documents

Publication Publication Date Title
EP1294179A3 (en) Method and apparatus for processing image data
EP1059800A3 (en) Digital imaging method and apparatus for detection of document security marks
EP1213684A3 (en) Image data compression method and system
EP0902396A3 (en) Moving-target tracking apparatus
EP1185089A3 (en) Image pickup apparatus
EP0843277A3 (en) Page analysis system
EP1162579A3 (en) Rental system, machine and method for providing rental items
EP0838767A3 (en) Picture image filing method and device
EP0840513A3 (en) Digital data watermarking
EP0892545A3 (en) Image processing apparatus, method and recording medium therefor
EP1191475A3 (en) Key identification system
EP0948194A3 (en) Device-independent and medium-independent color matching between an input device and an output device
EP0928110A3 (en) Image signal processing for electronic watermarking
ITTO990671A0 (en) PROCEDURE FOR STARTING INFORMATION PROCESSING EQUIPMENT, RECORDING MEDIA AND CORRESPONDING EQUIPMENT.
EP0805410A3 (en) Formless forms and paper web
EP0707284A3 (en) Picture set orientation method and apparatus
EP1191536A3 (en) Mixed-mode multi-standard information recording/management system
EP1107144A3 (en) Information processing apparatus and method, and storage medium
EP1065875A3 (en) Method and apparatus for making a print having an invisible coordinate system
EP0989705A3 (en) System and method for gatekeeper-to-gatekeeper communication
GB2372661A (en) Image processing
EP1054398A3 (en) Contents information recording method and contents information recording unit
EP1047075A3 (en) Information processing apparatus, information managing method and medium
EP0932158A3 (en) Information recording apparatus and information reproducing apparatus
EP0881642A3 (en) Method and apparatus for recording compressed audio data on recording medium and method for transferring compressed audio data

Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20201207