ChamferDist3d.c File Reference

Functions
VImage	VChamferDist3d (VImage src, VImage dest, VRepnKind repn)

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Detailed Description

3d chamfer distance transform.

For each background voxel, the length of the shortest 3D path to the nearest foreground voxel is computed. The chamfer distance metric is an approximation to the Euclidian distance.

References:

G. Borgefors (1984). "Distance Transforms in arbitrary dimensions", CVGIP 27, pp.321-345.
A.L.D. Beckers, A.W.M. Smeulders (1992), "Optimization of Length measurements for isotropic distance transformations in three dimensions", CVGIP: Image understanding, Vol. 55, No.3, pp- 296-306.

Author:

Gabriele Lohmann, MPI-CBS

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Function Documentation

VImage VChamferDist3d	(	VImage	src,
		VImage	dest,
		VRepnKind	repn
	)

Parameters:

	src	input image (bit repn)
	dest	output image (short of float repn)
	repn	output pixel repn (VShortRepn or VFloatRepn). If 'short' is used, then the distance values are multiplied by a factor of 10.