WO2005050342A3 - Device for estimating optical flow in images using fpgas - Google Patents

Device for estimating optical flow in images using fpgas Download PDF

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Publication number
WO2005050342A3
WO2005050342A3 PCT/ES2004/000523 ES2004000523W WO2005050342A3 WO 2005050342 A3 WO2005050342 A3 WO 2005050342A3 ES 2004000523 W ES2004000523 W ES 2004000523W WO 2005050342 A3 WO2005050342 A3 WO 2005050342A3
Authority
WO
WIPO (PCT)
Prior art keywords
sequence
optical flow
images
module
fpgas
Prior art date
Application number
PCT/ES2004/000523
Other languages
Spanish (es)
French (fr)
Other versions
WO2005050342A2 (en
Inventor
Vidal Eduardo Ros
Fernandez Sonia Mota
Alonso Antonio Javier Diaz
Original Assignee
Univ Granada
Vidal Eduardo Ros
Fernandez Sonia Mota
Alonso Antonio Javier Diaz
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 Univ Granada, Vidal Eduardo Ros, Fernandez Sonia Mota, Alonso Antonio Javier Diaz filed Critical Univ Granada
Publication of WO2005050342A2 publication Critical patent/WO2005050342A2/en
Publication of WO2005050342A3 publication Critical patent/WO2005050342A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/537—Motion estimation other than block-based
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/20—Analysis of motion
    • G06T7/223—Analysis of motion using block-matching
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/20—Analysis of motion
    • G06T7/269—Analysis of motion using gradient-based methods
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/20—Analysis of motion
    • G06T7/277—Analysis of motion involving stochastic approaches, e.g. using Kalman filters

Abstract

The invention relates to a device which is designed to estimate the dense optical flow of a video sequence in real time and which supplies the velocities of the movement of the grey levels present in the sequence. According to the invention, the digitised images are used as input for the system. As shown in the figure, the processing is performed by the inventive device using an architecture that is based on a computation of the space-time gradients of the sequence (derivatives module). The invention also comprises a control unit (control module) which can be used to configure the operation of the unit. In addition, the device supplies the velocity of each pixel (velocity computation module). The device is suitable for systems that are used for mobile object segmentation, tracking, 3D scene reconstruction, video compression, etc., in which all of the processing is performed in real time, said system being embedded and, consequently, portable.
PCT/ES2004/000523 2003-11-24 2004-11-23 Device for estimating optical flow in images using fpgas WO2005050342A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES200302745A ES2233202B1 (en) 2003-11-24 2003-11-24 DEVICE FOR ESTIMATING OPTICAL FLOW IN IMAGES BY FPGAS.
ESP200302745 2003-11-24

Publications (2)

Publication Number Publication Date
WO2005050342A2 WO2005050342A2 (en) 2005-06-02
WO2005050342A3 true WO2005050342A3 (en) 2005-06-30

Family

ID=34610364

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2004/000523 WO2005050342A2 (en) 2003-11-24 2004-11-23 Device for estimating optical flow in images using fpgas

Country Status (2)

Country Link
ES (1) ES2233202B1 (en)
WO (1) WO2005050342A2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19712017A1 (en) * 1997-03-15 1998-09-17 Gmd Gmbh Compact sensor system for optical motion detection in real time
US6215898B1 (en) * 1997-04-15 2001-04-10 Interval Research Corporation Data processing system and method
US20020106120A1 (en) * 2001-01-31 2002-08-08 Nicole Brandenburg Method of analyzing in real time the correspondence of image characteristics in corresponding video images

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19712017A1 (en) * 1997-03-15 1998-09-17 Gmd Gmbh Compact sensor system for optical motion detection in real time
US6215898B1 (en) * 1997-04-15 2001-04-10 Interval Research Corporation Data processing system and method
US20020106120A1 (en) * 2001-01-31 2002-08-08 Nicole Brandenburg Method of analyzing in real time the correspondence of image characteristics in corresponding video images

Also Published As

Publication number Publication date
ES2233202B1 (en) 2006-10-16
WO2005050342A2 (en) 2005-06-02
ES2233202A1 (en) 2005-06-01

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