perosionreconstruction

Synopsis

Description

perosionreconstruction performs a geodesic reconstruction by erosion of the markers image im_in1 in the mask image im_in2.

The two images must be of the same type, and the image of markers im_in1 must be higher or equal in intensity to the image of mask im_in2.

The reconstruction by erosion according to the connexity consists in the following operation applied until idempotence:

   im1=MAX(im_in1, im_in2)
   imerod=erosion(im1, connexity)
   im1=MAX(imerod, im_in2) 

For the image scolor, the lexicographic order is used: initially by using band X, in the event of equality by using the band Y then band Z.

Parameters

• connexity specifies the relationship between a pixel and its neighbors. It is an integer from: 2 for 1D, 4 or 8 in 2D or 6 or 26 in 3D.

Inputs

• im_in1: an image.
• im_in2: an image of the same type as im_in1.

Outputs

• im_out: an image of the same type as im_in1.

Result

Returns SUCCESS or FAILURE.

Examples

• Fill hole in regions yields by a simple segmentation process of the tangram.pan image:

     pbinarization 100 1e30 examples/tangram.pan in.pan
     pnewimage 256 256 0 255 i0.pan
     psetborder 1 1 1 1 1 1 0 i0.pan i1.pan
     perosionreconstruction 4 i1.pan in.pan fillhole_out.pan
  

See also

C++ prototype