psedesign

Synopsis

Description

psedesign allows to generate a structuring element as a new image.

The structuring element is designed from the type num_se and the size halfsize. For example, a halfsize of 1 for a num_se=3 gives a structuring element of type disc with size 3x3.

It is possible to create a structurant element with other shape from its specification in a text file (see ptxt2pan).

These structuring elements can then be used by the operators pseerosion and psedilation.

Parameters

• The type of the structuring element is given by num_se:

  In 2D:

  • 0: diamond (4-connexity)
  • 1: square (8-connexity)
  • 2: disc
  • 3: horizontal line
  • 4: diagonal line of 135 degrees (\)
  • 5: vertical line
  • 6: diagonal line of 45 degrees (/)
  • 7: cross
  • 8: X

  In 3D:

  • 10: bipyramid (6-connexity)
  • 11: cubic (26-connexity)
  • 12: sphere
  • 13: horizontal line on x coordinate
  • 14: horizontal line on y coordinate
  • 15: horizontal line on x coordinate
  • 16: diagonal line on x-y coordinates (/)
  • 17: diagonal line on x-z coordinates (/)
  • 18: diagonal line on y-z coordinates (/)
  • 19: diagonal line on x-y coordinates (\)
  • 20: diagonal line on x-z coordinates (\)
  • 21: diagonal line on y-z coordinates (\)
  • 22: cross in 3d
• size gives the half-size of the structuring element. For example, a half-size of 1 for a square gives a structuring element of size 3x3.

Outputs

• im_out: a 2D or 3D image of bytes.

Result

Returns SUCCESS or FAILURE.

Examples

• Performs geodesic black Top Hat with small 17x17 square structuring element:

   
     psedesign 1 8 es.pan
     pinverse tangram.pan i0.pan
     psedilation 1 i0.pan i1.pan
     pdilationreconstruction 8 i1.pan i0.pan i2.pan
     pdif i2.pan out.pan
  

See also

C++ prototype