Ellipsoid-Constrained Robust Fitting of Quadrics with Application to the 3D Morphological Characterization of Articular Surfaces.

Ellipsoid-Constrained Robust Fitting of Quadrics with Application to the 3D Morphological Characterization of Articular Surfaces. Research Abstract Details 

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Ellipsoid-Constrained Robust Fitting of Quadrics with Application to the 3D Morphological Characterization of Articular Surfaces. Abstract Text:

S Allaire,J J Jacq,V Burdin,Ch Roux,S Allaire,J J Jacq,V Burdin,Ch Roux,

This paper addresses the ellipsoid-type-specified fitting of quadratic surfaces, in the scope of model-based global feature extraction within scattered 3D point clouds. At characterizing articular bone surfaces, the quadrics estimated indicate useful overall-symmetry-related intrinsic centers and axes in joints. A constrained weighted least-squares minimization of algebraic residuals is used, with a robust and bias-corrected metric. With only one quadratic constraint involved, every step produces closed-form eigenvector solutions. To guarantee that an ellipsoid is output, we originally exploit a 2D representation called the Quadric Shape Map (QSM) by carrying out a visual study of the influence of shape constraints. The identified ellipsoid guarantee is needed to extract the center and axes in a wrist joint data stemming from 3D medical images.

Ellipsoid-Constrained Robust Fitting of Quadrics with Application to the 3D Morphological Characterization of Articular Surfaces. Publishing Authors By Initials

S Allaire,JJ Jacq,V Burdin,Ch Roux,S Allaire,JJ Jacq,V Burdin,Ch Roux,

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Ellipsoid-Constrained Robust Fitting of Quadrics with Application to the 3D Morphological Characterization of Articular Surfaces. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Conference proceedings : ... Annual International

VOLUME: 1

Page Numbers: 5087-90

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ISSN: 1557-170X

DAY: 16

MONTH: 11

YEAR: 2007

Ellipsoid-Constrained Robust Fitting of Quadrics with Application to the 3D Morphological Characterization of Articular Surfaces. Information

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LANGUAGE: eng

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AFFILIATION: Radiation Medicine Program, Princess Margaret Hospital, Uni. Health Network, 610 University Av., suite 5-612, Toronto, ON M5G 2M9, Canada. stephane.allaire@enst-bretagne.fr.

Country: United States

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MEDLINETA: Conf Proc IEEE Eng Med Biol So

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