Shape-based interpolation

Author

Herman, Gabor T. ; Zheng, Jingsheng ; Bucholtz, Carolyn A.

Author_Institution

Pennsylvania Univ., Philadelphia, PA, USA

Volume

12

Issue

3

fYear

1992

fDate

5/1/1992 12:00:00 AM

Firstpage

69

Lastpage

79

Abstract

Extensions to a shape-based interpolation method in which pixels that share a boundary edge (one inside and the other outside the object) are considered to be at a distance between adjacent pixel centers are proposed. Using such an initialization for distance calculations, a generalization of the chamfer distance calculation is developed. The generalization allows the simultaneous calculation of distances within the object and its background by two consecutive chamfering processes. The performances of a number of variants of the methods are evaluated. It is shown that the shape-based interpolation using a near-optimal 3*3 distance and modified cubic spline between-slice interpolation has superior properties to previously proposed methods for estimating object locations in missing slices in tomographic radiology.<>

Keywords

computer graphics; computerised picture processing; computerised tomography; interpolation; splines (mathematics); boundary edge; chamfer distance calculation; cubic spline between-slice interpolation; initialization; missing slices; object locations; pixels; shape-based interpolation; tomographic radiology; Biomedical imaging; Computed tomography; Displays; Heart; Image reconstruction; Image segmentation; Interpolation; Magnetic resonance imaging; Pixel; Shape;

fLanguage

English

Journal_Title

Computer Graphics and Applications, IEEE

Publisher

ieee

ISSN

0272-1716

Type

jour

DOI

10.1109/38.135915

Filename

135915