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Shape-based interpolation

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3 Author(s)
G. T. Herman ; Pennsylvania Univ., Philadelphia, PA, USA ; J. Zheng ; C. A. Bucholtz

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.<>

Published in:

IEEE Computer Graphics and Applications  (Volume:12 ,  Issue: 3 )