WO2003017186A1 - Method for optimizing off-line facial feature tracking - Google Patents

Method for optimizing off-line facial feature tracking Download PDF

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Publication number
WO2003017186A1
WO2003017186A1 PCT/US2002/023973 US0223973W WO03017186A1 WO 2003017186 A1 WO2003017186 A1 WO 2003017186A1 US 0223973 W US0223973 W US 0223973W WO 03017186 A1 WO03017186 A1 WO 03017186A1
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WO
WIPO (PCT)
Prior art keywords
tracking
image frames
sequence
facial feature
facial
Prior art date
Application number
PCT/US2002/023973
Other languages
French (fr)
Inventor
Thomas Maurer
Hartmut Neven
Bjoern Poehlker
Original Assignee
Eyematic Interfaces, Inc.
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 Eyematic Interfaces, Inc. filed Critical Eyematic Interfaces, Inc.
Priority to BR0205806-5A priority Critical patent/BR0205806A/en
Publication of WO2003017186A1 publication Critical patent/WO2003017186A1/en

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/20—Analysis of motion
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/16—Human faces, e.g. facial parts, sketches or expressions

Definitions

  • the present inventbn relates to avatar animation, and more particularly, to facial feature tracking.
  • Animation of photo-realistic avatars or of digital characters in movie or game production generally requires tracking of an actor's movements, particularly for tracking facial features. Accordingly, there exists a significant need for improved facial feature tracking.
  • the present invention satisfies this need.
  • a monitor window that has a visual indication of a plurality of tracking node locations with respect to facial features in a sequence of image frames.
  • the monitor window has a control for pausing at an image frame in the sequence of image frames.
  • the facial features in the sequence of image frames are automatically tracked while the visual indication is presented of the plurality of tracking node bcations on the respective image frames.
  • the sequence of image frames may be manually paused at a particular image frame in the sequence of image frames if the visual indication of the tracking node locations indicates that at least one location of a tracking node for a respective facial feature is not adequately tracking the respective facial feature.
  • the location of the tracking node may be reinitialized by manually placing the tracking node location at a position on the particular image frame in the monitor window that corresponds to the respective facial feature. Automatic tracking of the facial feature may be continued based on the reinitialized tracking node location.
  • the tracking of facial features in the sequence of facial image frames of the speaking actor may be performed using bunch graph matching, or using transformed facial image frames generated based on wavelet transformations, such as Gabor wavelet transformations.
  • FIG. 1 is a flow diagram for illustrating a method for optimizing off-line facial feature tracking using manual reinitialization of track node location, according to the present invention.
  • FIG. 2 is a schematic diagram of a monitor window for providing a visual indication of a plurality of tracking node locations with respect to facial features in a sequence of image frames for use in the method for off-line facial feature tracking of FIG. 1.
  • FIG. 3 is a schematic diagram of a monitor window for providing a visual indication of a plurality of tracking node locations with respect to facial features in a sequence of image frames for use in the method for optimizing off-line facial feature tracking of FIG. 1.
  • the present inventbn provides a technique for optimizing facial feature tracking for extraction of animation values or parameters.
  • Automatic extraction generally increases the speed and reduces the tedium associated with the extraction task.
  • Manual intervention permits correction of tracking inaccuracies or imperfections that may reduce the desirability of automatic extraction.
  • the inventbn may be embodied in a method, and related apparatus, for optimizing off-line facial feature tracking.
  • a monitor window 22 is provided that has a visual indication of a plurality of tracking node locations 24 with respect to facial features in a sequence of image frames 26 (step 12).
  • the monitor window has a control 28 for pausing at an image frame in the sequence of image frames.
  • the facial features in the sequence of image frames are automatically tracked while the visual indication is presented of the plurality of tracking node locations on the respective image frames (step 14).
  • the sequence of image frames may be manually paused at a particular image frame in the sequence of image frames if the visual indication of the tracking node locations indicates that at least one location 24-1 of a tracking node for a respective facial feature is not adequately tracking the respective facial feature (step 16).
  • the location of the tracking node may be reinitialized by manually placing the tracking node location at a position 24-1 ' on the particular image frame in the monitor window that corresponds to the respective facial feature (step 18).
  • Automatic tracking of the facial feature may be continued based on the reinitialized tracking node location (step 20).
  • the tracking of facial features in the sequence of facial image frames of the speaking actor may performed using bunch graph matching, or using transformed facial image frames generated based on wavelet transformations, such as Gabor wavelet transformations. Wavelet-based tracking techniques are described in U.S. patent number 6,272,231. The entire disclosure of U.S. patent number 6,272,231 is hereby incorporated herein by reference. The techniques of the invention may be accomplished using generally available image processing systems.
  • the manual intervention allows scalability of the animation tracking. For high quality animation, frequent manual interaction may be employed to insure accurate tracking. For lower quality animation, manual interaction may be employed less frequently for correcting only significant inconsistencies.

Abstract

The present invention relates to a technique for optimizing off-line facial feature tracking. Facial features in a sequence of image frames are automatically tracked while a visual indication is presented of the plurality of tracking node locations on the respective image frames. The sequence of image frames may be manually paused at a particular image frame in the sequence of image frames location of a tracking node for a respective facial feature is not adequately tracking the respective facial feature. The location of the tracking node may be reinitialized by manually placing the tracking node location at a position on the particular image frame in the monitor window that corresponds to the respective facial feature. Automatic tracking of the facial feature may be continued based on the reinitialized tracking node location.

Description

METHOD FOR OPTIMIZING OFF-LINE FACIAL FEATURE TRACKING
BACKGROUND OF THE INVENTION
The present inventbn relates to avatar animation, and more particularly, to facial feature tracking.
Animation of photo-realistic avatars or of digital characters in movie or game production generally requires tracking of an actor's movements, particularly for tracking facial features. Accordingly, there exists a significant need for improved facial feature tracking. The present invention satisfies this need.
SUMMARY OF THE INVENTION
The present inventbn is embodied in a method, and related apparatus, for optimizing off-line facial feature tracking. In the method a monitor window is provided that has a visual indication of a plurality of tracking node locations with respect to facial features in a sequence of image frames. The monitor window has a control for pausing at an image frame in the sequence of image frames. The facial features in the sequence of image frames are automatically tracked while the visual indication is presented of the plurality of tracking node bcations on the respective image frames. The sequence of image frames may be manually paused at a particular image frame in the sequence of image frames if the visual indication of the tracking node locations indicates that at least one location of a tracking node for a respective facial feature is not adequately tracking the respective facial feature. The location of the tracking node may be reinitialized by manually placing the tracking node location at a position on the particular image frame in the monitor window that corresponds to the respective facial feature. Automatic tracking of the facial feature may be continued based on the reinitialized tracking node location.
In other more detailed features of the invention, the tracking of facial features in the sequence of facial image frames of the speaking actor may performed using bunch graph matching, or using transformed facial image frames generated based on wavelet transformations, such as Gabor wavelet transformations.
Other features and advantages of the present invention should be apparent from the following description of the preferred embodiments taken in conjunction with the accompanying drawings, which illustrate, by way of example, the principles of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flow diagram for illustrating a method for optimizing off-line facial feature tracking using manual reinitialization of track node location, according to the present invention.
FIG. 2 is a schematic diagram of a monitor window for providing a visual indication of a plurality of tracking node locations with respect to facial features in a sequence of image frames for use in the method for off-line facial feature tracking of FIG. 1.
FIG. 3 is a schematic diagram of a monitor window for providing a visual indication of a plurality of tracking node locations with respect to facial features in a sequence of image frames for use in the method for optimizing off-line facial feature tracking of FIG. 1.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present inventbn provides a technique for optimizing facial feature tracking for extraction of animation values or parameters. Automatic extraction generally increases the speed and reduces the tedium associated with the extraction task. Manual intervention permits correction of tracking inaccuracies or imperfections that may reduce the desirability of automatic extraction.
With reference to FIG. 1 , the inventbn may be embodied in a method, and related apparatus, for optimizing off-line facial feature tracking. In the method, a monitor window 22 is provided that has a visual indication of a plurality of tracking node locations 24 with respect to facial features in a sequence of image frames 26 (step 12). The monitor window has a control 28 for pausing at an image frame in the sequence of image frames. The facial features in the sequence of image frames are automatically tracked while the visual indication is presented of the plurality of tracking node locations on the respective image frames (step 14). The sequence of image frames may be manually paused at a particular image frame in the sequence of image frames if the visual indication of the tracking node locations indicates that at least one location 24-1 of a tracking node for a respective facial feature is not adequately tracking the respective facial feature (step 16). The location of the tracking node may be reinitialized by manually placing the tracking node location at a position 24-1 ' on the particular image frame in the monitor window that corresponds to the respective facial feature (step 18). Automatic tracking of the facial feature may be continued based on the reinitialized tracking node location (step 20). The tracking of facial features in the sequence of facial image frames of the speaking actor may performed using bunch graph matching, or using transformed facial image frames generated based on wavelet transformations, such as Gabor wavelet transformations. Wavelet-based tracking techniques are described in U.S. patent number 6,272,231. The entire disclosure of U.S. patent number 6,272,231 is hereby incorporated herein by reference. The techniques of the invention may be accomplished using generally available image processing systems.
The manual intervention allows scalability of the animation tracking. For high quality animation, frequent manual interaction may be employed to insure accurate tracking. For lower quality animation, manual interaction may be employed less frequently for correcting only significant inconsistencies.
Although the foregoing discloses the preferred embodiments of the present invention, it is understood that those skilled in the art may make various changes to the preferred embodiments without departing from the scope of the invention. The invention is defined only by the following claims.

Claims

CLAIMS:
1. Method for optimizing off-line facial feature tracking, comprising the steps for: providing a monitor window that has a visual indication of a plurality of tracking node locations with respect to facial features in a sequence of image frames, the monitor window having a control for pausing at an image frame in the sequence of image frames; automatically tracking the facial features in the sequence of image frames while presenting the visual indication of the plurality of tracking node bcations on the respective image frames; manually pausing the sequence of image frames at a particular image frame in the sequence of image frames if the visual indication of the tracking node locations indicates that at least one location of a tracking node for a respective facial feature is not adequately tracking the respective facial feature; reinitializing the at least one location of the tracking node by manually placing the tracking node location at a position on the particular image frame in the monitor window that corresponds to the respective facial feature; and continuing automatic tracking of the facial feature based on the reinitialized at least one tracking node location.
2. Method for optimizing off-line facial feature tracking as defined in claim 1 , wherein the tracking of facial features in the sequence of facial image frames of the speaking actor is performed using bunch graph matching.
3. Method for optimizing off-line facial feature tracking as defined in claim 1, wherein the tracking of facial features in the sequence of facial image frames of the speaking actor is performed using transformed facial image frames generated based on wavelet transformations.
4. Method for optimizing off-line facial feature tracking as defined in claim 1 , wherein the tracking of facial features in the sequence of facial image frames of the speaking actor is performed using transformed facial image frames generated based on Gabor wavelet transformations.
5. Apparatus for optimizing off-line facial feature tracking, comprising: a monitor window means for providing a visual indication of a plurality of tracking node locations with respect to facial features in a sequence of image frames, the monitor window having a control for pausing at an image frame in the sequence of image frames; means for automatic tracking of the facial features in the sequence of image frames while presenting the visual indication of the plurality of tracking node locations on the respective image frames; means for manually pausing the sequence of image frames at a particular image frame in the sequence of image frames if the visual indication of the tracking node locations indicates that at least one location of a tracking node for a respective facial feature is not adequately tracking the respective facial feature; means for reinitializing the at least one location of the tracking node by manually placing the tracking node location at a position on the particular image frame in the monitor window that corresponds to the respective facial feature; and means for continuing automatic tracking of the facial feature based on the reinitialized at least one tracking node location.
PCT/US2002/023973 2001-08-13 2002-07-29 Method for optimizing off-line facial feature tracking WO2003017186A1 (en)

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BR0205806-5A BR0205806A (en) 2001-08-13 2002-07-29 Method for optimizing tracking of offline facial details

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170040692A (en) 2015-10-05 2017-04-13 (주)감성과학연구센터 Method for extracting information of facial movement based on Action Unit
KR20170040693A (en) 2015-10-05 2017-04-13 (주)감성과학연구센터 Method for extracting Emotional Expression information based on Action Unit

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100455294B1 (en) * 2002-12-06 2004-11-06 삼성전자주식회사 Method for detecting user and detecting motion, and apparatus for detecting user within security system
US7194110B2 (en) * 2002-12-18 2007-03-20 Intel Corporation Method and apparatus for tracking features in a video sequence
US7454039B2 (en) * 2004-07-12 2008-11-18 The Board Of Trustees Of The University Of Illinois Method of performing shape localization
US7353034B2 (en) 2005-04-04 2008-04-01 X One, Inc. Location sharing and tracking using mobile phones or other wireless devices
US8139068B2 (en) * 2005-07-29 2012-03-20 Autodesk, Inc. Three-dimensional animation of soft tissue of characters using controls associated with a surface mesh
US8047915B2 (en) 2006-01-11 2011-11-01 Lyle Corporate Development, Inc. Character for computer game and method
US7751599B2 (en) * 2006-08-09 2010-07-06 Arcsoft, Inc. Method for driving virtual facial expressions by automatically detecting facial expressions of a face image
KR20080073933A (en) 2007-02-07 2008-08-12 삼성전자주식회사 Object tracking method and apparatus, and object pose information calculating method and apparatus
KR100940862B1 (en) * 2007-12-17 2010-02-09 한국전자통신연구원 Head motion tracking method for 3d facial model animation from a video stream
US8774527B1 (en) 2009-12-07 2014-07-08 Google Inc. Matching an approximately located query image against a reference image set using cellular base station and wireless access point information
US8238671B1 (en) 2009-12-07 2012-08-07 Google Inc. Scene classification for place recognition
US8189964B2 (en) * 2009-12-07 2012-05-29 Google Inc. Matching an approximately located query image against a reference image set
US8509525B1 (en) 2011-04-06 2013-08-13 Google Inc. Clustering of forms from large-scale scanned-document collection

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999053443A1 (en) * 1998-04-13 1999-10-21 Eyematic Interfaces, Inc. Wavelet-based facial motion capture for avatar animation
US6011562A (en) * 1997-08-01 2000-01-04 Avid Technology Inc. Method and system employing an NLE to create and modify 3D animations by mixing and compositing animation data

Family Cites Families (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59226981A (en) 1983-06-08 1984-12-20 Fujitsu Ltd Method and device for pattern matching
JPS60592A (en) 1983-06-15 1985-01-05 三菱電機株式会社 Nap preventor
US4827413A (en) 1987-06-16 1989-05-02 Kabushiki Kaisha Toshiba Modified back-to-front three dimensional reconstruction algorithm
US5168529A (en) 1988-08-29 1992-12-01 Rayethon Company Confirmed boundary pattern matching
US5432712A (en) 1990-05-29 1995-07-11 Axiom Innovation Limited Machine vision stereo matching
JPH0771288B2 (en) 1990-08-24 1995-07-31 神田通信工業株式会社 Automatic view adjustment method and device
GB9019538D0 (en) 1990-09-07 1990-10-24 Philips Electronic Associated Tracking a moving object
US5220441A (en) 1990-09-28 1993-06-15 Eastman Kodak Company Mechanism for determining parallax between digital images
WO1992008204A2 (en) 1990-10-24 1992-05-14 Siemens Aktiengesellschaft Method of detecting and estimating the position in space of objects from a two-dimensional image
US5159647A (en) 1991-03-04 1992-10-27 David Sarnoff Research Center, Inc. Fast and efficient search method for graphical data
US5680487A (en) 1991-12-23 1997-10-21 Texas Instruments Incorporated System and method for determining optical flow
US5333165A (en) 1992-02-27 1994-07-26 John K. Grady Method and apparatus for three-dimensional video signals
JP3298072B2 (en) 1992-07-10 2002-07-02 ソニー株式会社 Video camera system
US5383013A (en) 1992-09-18 1995-01-17 Nec Research Institute, Inc. Stereoscopic computer vision system
US5550928A (en) 1992-12-15 1996-08-27 A.C. Nielsen Company Audience measurement system and method
US5511153A (en) 1994-01-18 1996-04-23 Massachusetts Institute Of Technology Method and apparatus for three-dimensional, textured models from plural video images
US5581625A (en) 1994-01-31 1996-12-03 International Business Machines Corporation Stereo vision system for counting items in a queue
DE4406020C1 (en) 1994-02-24 1995-06-29 Zentrum Fuer Neuroinformatik G Automatic digital image recognition system
JP3242529B2 (en) 1994-06-07 2001-12-25 松下通信工業株式会社 Stereo image matching method and stereo image parallax measurement method
US5736982A (en) 1994-08-03 1998-04-07 Nippon Telegraph And Telephone Corporation Virtual space apparatus with avatars and speech
US5699449A (en) 1994-11-14 1997-12-16 The University Of Connecticut Method and apparatus for implementation of neural networks for face recognition
US5714997A (en) 1995-01-06 1998-02-03 Anderson; David P. Virtual reality television system
US5982853A (en) 1995-03-01 1999-11-09 Liebermann; Raanan Telephone for the deaf and method of using same
US5588033A (en) 1995-06-06 1996-12-24 St. Jude Children's Research Hospital Method and apparatus for three dimensional image reconstruction from multiple stereotactic or isocentric backprojections
US5715325A (en) 1995-08-30 1998-02-03 Siemens Corporate Research, Inc. Apparatus and method for detecting a face in a video image
US5802220A (en) 1995-12-15 1998-09-01 Xerox Corporation Apparatus and method for tracking facial motion through a sequence of images
US5774591A (en) 1995-12-15 1998-06-30 Xerox Corporation Apparatus and method for recognizing facial expressions and facial gestures in a sequence of images
US5809171A (en) 1996-01-05 1998-09-15 Mcdonnell Douglas Corporation Image processing method and apparatus for correlating a test image with a template
US5764803A (en) 1996-04-03 1998-06-09 Lucent Technologies Inc. Motion-adaptive modelling of scene content for very low bit rate model-assisted coding of video sequences
GB9610212D0 (en) 1996-05-16 1996-07-24 Cyberglass Limited Method and apparatus for generating moving characters
US5828769A (en) 1996-10-23 1998-10-27 Autodesk, Inc. Method and apparatus for recognition of objects via position and orientation consensus of local image encoding
US6044168A (en) 1996-11-25 2000-03-28 Texas Instruments Incorporated Model based faced coding and decoding using feature detection and eigenface coding
US6031539A (en) * 1997-03-10 2000-02-29 Digital Equipment Corporation Facial image method and apparatus for semi-automatically mapping a face on to a wireframe topology
US5917937A (en) 1997-04-15 1999-06-29 Microsoft Corporation Method for performing stereo matching to recover depths, colors and opacities of surface elements
US6052123A (en) * 1997-05-14 2000-04-18 International Business Machines Corporation Animation reuse in three dimensional virtual reality
US5995119A (en) 1997-06-06 1999-11-30 At&T Corp. Method for generating photo-realistic animated characters
US6047078A (en) * 1997-10-03 2000-04-04 Digital Equipment Corporation Method for extracting a three-dimensional model using appearance-based constrained structure from motion
JP3928229B2 (en) * 1997-11-28 2007-06-13 ソニー株式会社 Display control apparatus, display control method, and recording medium
US20030007666A1 (en) * 1998-04-13 2003-01-09 Stewartson James A. Method and apparatus for relief texture map flipping
US6353437B1 (en) * 1998-05-29 2002-03-05 Avid Technology, Inc. Animation system and method for defining and using rule-based groups of objects
US6714661B2 (en) * 1998-11-06 2004-03-30 Nevengineering, Inc. Method and system for customizing facial feature tracking using precise landmark finding on a neutral face image
US20020067362A1 (en) * 1998-11-06 2002-06-06 Agostino Nocera Luciano Pasquale Method and system generating an avatar animation transform using a neutral face image
AUPQ896000A0 (en) * 2000-07-24 2000-08-17 Seeing Machines Pty Ltd Facial image processing system
US6920236B2 (en) * 2001-03-26 2005-07-19 Mikos, Ltd. Dual band biometric identification system
GB0216819D0 (en) * 2002-07-19 2002-08-28 Kaydara Inc Generating animation data

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6011562A (en) * 1997-08-01 2000-01-04 Avid Technology Inc. Method and system employing an NLE to create and modify 3D animations by mixing and compositing animation data
WO1999053443A1 (en) * 1998-04-13 1999-10-21 Eyematic Interfaces, Inc. Wavelet-based facial motion capture for avatar animation

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
VALENTE^1 S ET AL: "A visual analysis/synthesis feedback loop for accurate face tracking", SIGNAL PROCESSING. IMAGE COMMUNICATION, ELSEVIER SCIENCE PUBLISHERS, AMSTERDAM, NL, vol. 16, no. 6, February 2001 (2001-02-01), pages 585 - 608, XP004314406, ISSN: 0923-5965 *
YANG T-J ET AL.: "VR-Face: An Operator Assisted Real-Time Face Tracking System", WORKING DOCUMENT,COMMUNICATION AND MULTIMEDIA LABORATORY, DEPT. OF COMPUTER SCIENCE AND INFORMATION ENGINEERING, NATIONAL TAIWAN UNIVERSITY, June 1999 (1999-06-01), Taipei, Taiwan, XP002218410 *
YANG T-J: "Face Analysis and Synthesis", COMMUNICATION AND MULTIMEDIA LABORATORY, DEPT. OF COMPUTER SCIENCE AND INFORMATION ENGINEERING, NATIONAL TAIWAN UNIVERSITY, June 1999 (1999-06-01), Taipei, Taiwan, XP002218411 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170040692A (en) 2015-10-05 2017-04-13 (주)감성과학연구센터 Method for extracting information of facial movement based on Action Unit
KR20170040693A (en) 2015-10-05 2017-04-13 (주)감성과학연구센터 Method for extracting Emotional Expression information based on Action Unit

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