Sparse Representation of Deformable 3D Organs with Spherical Harmonics and Structured Dictionary
Joint Authors
Zhang, Yingchun
Tewfik, Ahmed H.
Shen, Yunhe
Wang, Dan
Source
International Journal of Biomedical Imaging
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-17, 17 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-09-19
Country of Publication
Egypt
No. of Pages
17
Main Subjects
Abstract EN
This paper proposed a novel algorithm to sparsely represent a deformable surface (SRDS) with low dimensionality based on spherical harmonic decomposition (SHD) and orthogonal subspace pursuit (OSP).
The key idea in SRDS method is to identify the subspaces from a training data set in the transformed spherical harmonic domain and then cluster each deformation into the best-fit subspace for fast and accurate representation.
This algorithm is also generalized into applications of organs with both interior and exterior surfaces.
To test the feasibility, we first use the computer models to demonstrate that the proposed approach matches the accuracy of complex mathematical modeling techniques and then both ex vivo and in vivo experiments are conducted using 3D magnetic resonance imaging (MRI) scans for verification in practical settings.
All results demonstrated that the proposed algorithm features sparse representation of deformable surfaces with low dimensionality and high accuracy.
Specifically, the precision evaluated as maximum error distance between the reconstructed surface and the MRI ground truth is better than 3 mm in real MRI experiments.
American Psychological Association (APA)
Wang, Dan& Tewfik, Ahmed H.& Zhang, Yingchun& Shen, Yunhe. 2011. Sparse Representation of Deformable 3D Organs with Spherical Harmonics and Structured Dictionary. International Journal of Biomedical Imaging،Vol. 2011, no. 2011, pp.1-17.
https://search.emarefa.net/detail/BIM-488944
Modern Language Association (MLA)
Wang, Dan…[et al.]. Sparse Representation of Deformable 3D Organs with Spherical Harmonics and Structured Dictionary. International Journal of Biomedical Imaging No. 2011 (2011), pp.1-17.
https://search.emarefa.net/detail/BIM-488944
American Medical Association (AMA)
Wang, Dan& Tewfik, Ahmed H.& Zhang, Yingchun& Shen, Yunhe. Sparse Representation of Deformable 3D Organs with Spherical Harmonics and Structured Dictionary. International Journal of Biomedical Imaging. 2011. Vol. 2011, no. 2011, pp.1-17.
https://search.emarefa.net/detail/BIM-488944
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-488944