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Continuous 3D hand tracking as planar target
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Morshidi, Malik A. (2013) Continuous 3D hand tracking as planar target. PhD thesis, University of Warwick.
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Official URL: http://webcat.warwick.ac.uk/record=b2689131~S1
Abstract
This thesis focuses on the development of an articulated 3D hand-
tracking framework where a single-view technique using a pre-calibrated
low cost webcam is explored. The tracking method is based on a novel
extension from the standard particle filter by introducing gravitational
force as a new attribute in addition to every particle’s weight. The par-
ticles close to the current observation are attracted closer to provide
an improved posterior distribution that results in fewer particles utili-
sation as well as better tracking accuracy. Experiments show the pro-
posed method outperforms the standard particle filter and its variants,
as well as Camshift guided particle filter. The hand features extraction
utilises convex hull and convexity defects methods to extract dominant
features from hand silhouette. Using the hand geometry knowledge,
methods for labelling finger and determining left or right hand, as
well as addressing the finger articulation problem are proposed. Com-
bining the tracking method and the hand features extraction has the
advantage in better occlusion handling and tracking. The pose of an
object is estimated using the robust planar pose method that is incor-
porated in the Augmented Reality Tool Kit, which is a marker-based
computer vision tracking library for solving the camera projection ma-
trix. The ambiguity in markerless hand pose estimation and tracking
is solved by selecting a better combination of hand feature points as
control points. An OpenGL 3D model featuring finger kinematic and
articulation constraints is developed using a combination of small el-
lipsoids that correspond to every rigid part of a hand. The model is
augmented back at the estimated hand location in the original video
sequence to produce a seamless see-through effect. Finger articulation
is addressed by introducing a dynamic hand model points selection
that can be used interchangeably while tracking. These combinations
of different model points ensure continuous tracking of 3D hand as
planar target.
Item Type: | Thesis (PhD) | ||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||
Library of Congress Subject Headings (LCSH): | Hand -- Movements -- Computer simulation, Automatic tracking, Three-dimensional imaging | ||||
Official Date: | January 2013 | ||||
Dates: |
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Institution: | University of Warwick | ||||
Theses Department: | School of Engineering | ||||
Thesis Type: | PhD | ||||
Publication Status: | Unpublished | ||||
Supervisor(s)/Advisor: | Tjahjadi, Tardi | ||||
Sponsors: | International Islamic University Malaysia; Malaysia. Kementerian Pengajian Tinggi [Malaysia. Ministry of Higher Education] | ||||
Extent: | xviii, 161 leaves : illustrations. | ||||
Language: | eng |
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