#53 Problems with Blur

[Georg Ulfig]

Hi everybody,
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,
Georg

[Georg Ulfig]

System: Linux Mint 14, 64 bit
Used devil version (supplied by package): 1.7.8-6.1ubuntu2