I tried to use both iluBlurGaussian() and iluBlurAvg() and get the same problem with both of them:
I have got a mask image that is partly black (RGB=0,0,0) and partly white (RGB=255,255,255). I wanted to blur the edges trying 1 time, 10 times, 100 times.
I expected that only the edges were blurred (gray). (Large) Black parts should remain black.
What happened was that the whole black part gets more and more gray the more often I apply the blur function.
I exprienced (when analysing the black color with GIMP and a pipette) that even after 1 blur cycle the RGB-values changed from 0,0,0 to 1,1,1.
Is this a bug or can I configure the behaviour somewhere?
Thanks for your help,