contrib/mul/vil3d/algo/vil3d_make_distance_filter.cxx File Reference

Compute filter for an exp. More...

#include "vil3d_make_distance_filter.h"
#include <vcl_cmath.h>
#include <vcl_cassert.h>

Go to the source code of this file.

Functions
void	vil3d_make_distance_filter_r1 (double width_i, double width_j, double width_k, vil3d_structuring_element &se, vcl_vector< double > &d)
	Create filter such that d[a] is distance from origin of se[a].
void	vil3d_make_distance_filter (double width_i, double width_j, double width_k, int r, vil3d_structuring_element &se, vcl_vector< double > &d)
	Create filter such that d[a] is distance from origin of se[a].

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Detailed Description

Compute filter for an exp.

distance transform.

Author:

Tim Cootes

Definition in file vil3d_make_distance_filter.cxx.

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Function Documentation

void vil3d_make_distance_filter	(	double	width_i,
		double	width_j,
		double	width_k,
		int	r,
		vil3d_structuring_element &	se,
		vcl_vector< double > &	d
	)

Create filter such that d[a] is distance from origin of se[a].

Pixel widths are (width_i,width_j,width_k). Elements are selected so that only voxels visited before in a raster scan of the image are included. Distance transforms require two passes, a forward and reverse pass.

Consider only voxels within r voxels (1 norm) of origin.

Definition at line 110 of file vil3d_make_distance_filter.cxx.

void vil3d_make_distance_filter_r1	(	double	width_i,
		double	width_j,
		double	width_k,
		vil3d_structuring_element &	se,
		vcl_vector< double > &	d
	)

Create filter such that d[a] is distance from origin of se[a].

Pixel widths are (width_i,width_j,width_k). Elements are selected so that only voxels visited before in a raster scan of the image are included. Distance transforms require two passes, a forward and reverse pass.

Consider only voxels within 1 voxel (1 norm) of origin. Indexes (27-1)/2 = 13 voxels.

Definition at line 18 of file vil3d_make_distance_filter.cxx.