>Hi, >for...@gimpusers.com (2009-11-24 at 2113.32 +0100): >> hello there i am a blender user >> i i wanted to create a texture for bumomap/normal map >> in gimp >> i tryed the noise filter but this is not what i need > >You have to combine it with other things. ;] > >> i am modeling a camera >> see camera real image here >> http://www.kenrockwell.com/nikon/d40/images/d40-18-55mm-top-big.jpg >> u can see that the camera material have little bumps >> with different shapes in each little bump >> how can i generate a texture like this in gimp > >You can probably do it in Blender too, using clouds texture, custom >colour gradients, etc. But in Gimp: > >- new white image. > >- rgb noise filter, move sliders to max so you get lots of dots. > >- desaturate (lightness one is fine, try others if you want). > >- blur (normal one will do here). > >- curves, make a _/ curve , the histogram should show a sharp spike on > the right side like /\, I placed the curve parallel to the left side > of spike (x 162, y 0 and x 183, y 255, approx). This leaves you with > some random black spots. > >- guassian blur, 1-2 pixels to smooth. > >- invert if you need the bump map that way. > >As last note, I decided the dot density was too low, so before invert >I duplicated the layer, offset it, and put it in multiply mode. Next >would be making the result tileable (plenty of tutorials about this, >most just forget that you should use offset multiple times different >values, otherwise you will have zones that are hard to touch up). > >GSR > >
)-: no luck there doing that for start noise was creating noise with different colors on curves , changing the line _/ wont effect the histogram on the background any way i can share my result on this page ? sotty i am no expert on gimp -- shay t. (via www.gimpusers.com) _______________________________________________ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
