pxor

Synopsis

Description

pxor performs a bitwise "xor" between values of the two inputs im_in1 and im_in2.

If inputs are integer images, the "xor" uses the '^' C operator and is applied on each pixel:

   pixel(im_out) = pixel(im_in1) ^ pixel(im_in2);

For real image, the "xor" operator is:

   if pixel(im1[p]) == pixel(im[2]))
   then pixel(imd[p]=0)
   else pixel(imd[p]) = pixel(im1[p])+pixel(im2[p])

For color or multispectral image, the "xor" operator is computed separately on each band.

For graph, the "xor" operator is implemented by if then else and it is applied on each node values.

For region map, the "xor" operator is the symmetrical difference between regions:

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

The two inputs must be of the same type.

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 the two inputs.

Result

Returns SUCCESS or FAILURE.
For region map, returns the new higher label value.

Examples

• Select the pixels that are different from two thresholding of the image tangram :

    pbinarization 100 1e30 examples/tangram.pan a.pan
    pbinarization 80 1e30 examples/tangram.pan b.pan
    pxor a.pan b.pan c.pan
  

See also

C++ prototype