pareaclosing

Synopsis

Description

The operator pareaopening removes dark objects whose area in number of pixels is less than the specified area.

The algorithm presented in a naive way consists in:

1. Thresholding image at each gray level,
2. and removing dark regions whose area is smaller than the specified area.
3. The final result is the addition of the result at each level.

Parameters

• connexity specifies the relationship between a pixel and its neighbors. It is an integer from: 4 or 8 for 2D, or 6 or 26 for 3D.
• area specifies the maximum area size, in number of pixel, to be preserved.

Inputs

• im_in: a gray level 2D image.

Outputs

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

Result

Returns SUCCESS or FAILURE.

Examples

• Close areas of the tangram pieces lower than 500 pixels:

   
     pbinarization 90 1e30 examples/tangram.pan i1.pan 
     pareaclosing 8 500 i1.pan out.pan
  

See also

C++ prototype