pdif

Synopsis

Description

pdif computes the difference between the two inputs im_in1 and im_in2.

If im_in1 and im_in2 are images then the new image im_out is built with the difference between each pixel:

   pixel(im_out) = ABS(pixel(im_in1) - pixel(im_in2));

The two inputs must be of the same type.

For color or multispectral image, the difference is computed separately on each band.

If im_in1 and im_in2 are graphs then the new graph im_out is built with the difference between each node values.

If im_in1 and im_in2 are region maps pdif computes the symmetrical difference between region maps:

   Union(im_in1,im_in2) - Intersection(im_in1,im_in2).

Inputs

• im_in1: an image, a graph or a region map.
• im_in2: an image, a graph or a region map.

Outputs

• im_out: an object of the same type as im_in1 and im_in2.

Result

Returns SUCCESS or FAILURE.

For region map, returns the new higher label value.

Examples

   pdif a.pan b.pan c.pan

See also

C++ prototype

Version française

Différence d'images ou de graphes et différence symétrique entre cartes de régions.