C:/Users/Malcolm/Documents/temp/binaryimagelibrary/medialaxistransform.c File Reference

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>

Functions
void	thin (unsigned char *binary, int width, int height)
float *	medialaxistransformf (unsigned char *binary, int width, int height)
unsigned char *	medialaxistransform (unsigned char *binary, int width, int height)

Detailed Description

Medial axis transform and thin function.

Used for skeltonisation of images.

Function Documentation

unsigned char* medialaxistransform	(	unsigned char *	binary,
		int	width,
		int	height
	)

Binary raster-based medial axis transform.

Parameters

[in]	binary	- the binary image
	width	- image width
	height	- image height

Returns

The medial axis transform.

float* medialaxistransformf	(	unsigned char *	binary,
		int	width,
		int	height
	)

Medial axis transform, retainign distance to perimater

Parameters

[in]	binary	- the binary image.
	width	- image width
	height	- image height

Returns

Transformed iamge as floats (malloced).

void thin	(	unsigned char *	image,
		int	xsize,
		int	ysize
	)

Thin a binary image using Rosenfeld's parallel thinning algorithm.

Parameters

[in,out]	binary	- the bianry image
	xsize	- image width
	ysize	- image height

Note

Thinning is a different operation to medial axis transform, but similarly skeletonises the binary image.