Shape description of three-dimensional images based on medial axis

Author

Bonnassie, A. ; Peyrin, F. ; Attali, D.

Author_Institution

INSA, Villeurbanne, France

Volume

3

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

931

Abstract

3D-shape description requires the partition of objects in different parts. We propose a new approach based on the analysis of a 3D skeleton. The skeleton is a representation of objects by their axis of symmetry. In 3D, it is composed of surfaces associated with plate-like parts of the object and curves associated with cylindrical parts. Our method is two parts. First, four types of skeleton points are identified: boundary, branching, regular and arc points. A skeleton point is labeled according to the intersection of its maximal ball with the object. In order to add tolerance to the process, the radius of maximal balls is slightly increased. Second, the reversibility of the skeleton is used to deduce a labeling of the whole object. Finally, we present an application of the method to the identification of bone structures from 3D high-resolution tomographic images

Keywords

bone; computerised tomography; image classification; image representation; image resolution; image thinning; medical image processing; 3D shape description; 3D skeleton; arc points; axis of symmetry; bone structure identification; boundary points; branching points; high-resolution tomographic images; image analysis; image representation; maximal balls; medial axis; object labeling; object partition; regular points; reversibility; three-dimensional images; Application software; Bones; Image analysis; Image processing; Labeling; Laboratories; Shape; Skeleton; Tomography; Topology;

fLanguage

English

Publisher

ieee

Conference_Titel

Image Processing, 2001. Proceedings. 2001 International Conference on

Conference_Location

Thessaloniki

Print_ISBN

0-7803-6725-1

Type

conf

DOI

10.1109/ICIP.2001.958277

Filename

958277