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Facial Features Tracking using Active Appearance Models
Linköping University, Department of Electrical Engineering.
2006 (English)Independent thesis Advanced level (degree of Magister), 20 points / 30 hpStudent thesis
Abstract [en]

This thesis aims at building a system capable of automatically extracting and parameterizing the position of a face and its features in images acquired from a low-end monocular camera. Such a challenging task is justified by the importance and variety of its possible applications, ranging from face and expression recognition to animation of virtual characters using video depicting real actors. The implementation includes the construction of Active Appearance Models of the human face from training images. The existing face model Candide-3 is used as a starting point, making the translation of the tracking parameters to standard MPEG-4 Facial Animation Parameters easy.

The Inverse Compositional Algorithm is employed to adapt the models to new images, working on a subspace where the appearance is "projected out" and thus focusing only on shape.

The algorithm is tested on a generic model, aiming at tracking different people’s faces, and on a specific model, considering one person only. In the former case, the need for improvements in the robustness of the system is highlighted. By contrast, the latter case gives good results regarding both quality and speed, with real time performance being a feasible goal for future developments.

Place, publisher, year, edition, pages
Universitetsbibliotek , 2006. , 80 p.
Keyword [en]
Model-Based Coding, Face Tracking, PCA, AAM, Candide Model, MPEG-4
National Category
Computer Vision and Robotics (Autonomous Systems)
Identifiers
URN: urn:nbn:se:liu:diva-7658ISRN: LiTH-ISY-EX--06/3965--SEOAI: oai:DiVA.org:liu-7658DiVA: diva2:22643
Presentation
2006-10-09, Systemet, B, 10:10
Uppsok
teknik
Supervisors
Examiners
Available from: 2006-11-10 Created: 2006-11-10

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Department of Electrical Engineering
Computer Vision and Robotics (Autonomous Systems)

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf