pskeletonization

Computes the skeleton of 2D objects.

Synopsis

pskeletonization connexity [-m mask] [im_in|-][im_out|-]

Description

pskeletonization computes a homotopic skeleton of the binary objects found in the image im_in. The image background is made of the pixels whose value is zero.

The skeleton will be either made of 4-connected or 8-connected components. A Euclidean-distance-ordered removal process is used : it will repeatedly remove simple points, but will not remove points that belong to the medial axis obtained from the euclidean distance transform.The obtained skeleton is thus well centered within the initial shape(s). computes the skeleton of the binary objects in the 2D image im_in. Binary objects are regions with connected non null pixels.

Parameter

connexity: the connexity degree for the object: 4 or 8.

Inputs

im_in: a 2D binary image.

Outputs

im_out: a 2D binary image.

Result

Returns SUCCESS or FAILURE.

Examples

Create the skeleton of the tangram pieces:

 
   pbinarization 95 1e30 examples/tangram.pan i1.pan 
   pskeletonization 4 i1.pan out.pan

C++ prototype

Errc PSkeletonization( const Img2duc &im_in, Img2duc &im_out, int connexity );

Author: Sébastien Fourey