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creating a texture

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creating a texture shacoshe 24 Nov 21:13
  creating a texture Owen 24 Nov 21:41
   creating a texture shacoshe 24 Nov 21:58
    creating a texture Owen 25 Nov 02:20
  creating a texture GSR - FR 24 Nov 22:50
   creating a texture shacoshe 25 Nov 15:05
    creating a texture shacoshe 25 Nov 21:40
    creating a texture GSR - FR 25 Nov 23:24
shacoshe
2009-11-24 21:13:32 UTC (about 15 years ago)
postings
9

creating a texture

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

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

black and white will be also greate

thank you

Owen
2009-11-24 21:41:40 UTC (about 15 years ago)

creating a texture

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

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

black and white will be also greate

I would try

Convert image to grayscale

Copy out a small section and save as a .pat file

shacoshe
2009-11-24 21:58:41 UTC (about 15 years ago)
postings
9

creating a texture

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

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

black and white will be also greate

I would try

Convert image to grayscale

Copy out a small section and save as a .pat file

i dont understand how grayscale can help thank u

GSR - FR
2009-11-24 22:50:35 UTC (about 15 years ago)

creating a texture

Hi,
forums@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

Owen
2009-11-25 02:20:54 UTC (about 15 years ago)

creating a texture

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

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

black and white will be also greate

I would try

Convert image to grayscale

Copy out a small section and save as a .pat file

i dont understand how grayscale can help thank u

Well that was my interpretation of your "black and white will be also greate"

shacoshe
2009-11-25 15:05:33 UTC (about 15 years ago)
postings
9

creating a texture

Hi,
forums@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

shacoshe
2009-11-25 21:40:39 UTC (about 15 years ago)
postings
9

creating a texture

also i like to have a big distance from each bump everything i try is to close

Hi,
forums@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

GSR - FR
2009-11-25 23:24:28 UTC (about 15 years ago)

creating a texture

Hi,
forums@gimpusers.com (2009-11-25 at 1505.33 +0100):

for start noise was creating noise with different colors

Yes, that is right, because desaturate gives you the white to black version. You have to follow all the steps, even if at first it looks bad. ;]

I made a quick visual tutorial so you can see how things change: http://www.infernal-iceberg.com/gimp/tmp/camera-texture-tutorial.png

on curves , changing the line _/ wont effect the histogram on the background

The histogram stays as is while you move the dots. I just used it as reference to place the curve. If you use the x and y info that appears when you drag the controls of the curve, you get good references too. But the best is to check what the image shows, the values I gave are only examples, it depends with the result you want.

any way i can share my result on this page ?

For PNGs or JPGs, you can use one of those image hosting sites (imageshack, tinypic, etc). If you used the mail list method instead of gimpusers gateway, I think you can even send small attachments.

GSR