pinverse

Performs inversion of image or graph or region map labels.

pinverse [-m mask] [im_in|-] [im_out|-]

The operator pinverse performs an inversion of the values of the input im_in.

For byte images, inversion is applied from the minimum and maximum values of the related type (0-255):

   pixel = (max(type) + min(type)) - pixel.

For integer and float images, inversion is applied from the minimum and maximum values in the image:

   pixel = (max(image) + min(image)) - pixel.

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

For graph, inversion is applied on each node value:

   val = (max(graph) - min(graph)) - val.

For region map, inversion is applied on each label different from 0:

label 0 -> 0;
label 1 -> higher label value;
label 2 -> higher label value-1;
...
label higher label value -> 1;

Returns SUCCESS or FAILURE.