BUMP Maps and the Like.
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Hey Guys
Just wanted to ask you what you would consider to be the best way to create a bump map? At present I open the texture in PS, create a new layer above it, add fill - 50% grey and set blending to saturation. Do you know of any other ways to create bumps? also, can the same map thats been created be used as a displacement map too?
I've been playing about with them and thought I get some views from more experienced users.
Anyhow, your input is very welcome.
Thanks.
Spec:
OS - XP64 bit
VRAY - 1.48
SU - 7.1 PRO -
Displacement maps and be used as bump maps and vice versa.
@chips_007 said:
At present I open the texture in PS, create a new layer above it, add fill - 50% grey and set blending to saturation.
This would be the same as applying a a desaturation adjustment to it.
Creating a bumpmap is not as simple as that though. Remember that white represent raised areas and black represent low areas.Say you have a texture of a tile - the tile is yellow and on the tile there is blue print. If you simply desaturate that you will get a darker area for the blue text than the yellow surface it's on - even though the surface is completely flush.
Instead you need to extract the raised and lowered areas and generate a bump map that represent the surface topology. I some times trace over the diffuse creating the bump completely from scratch.Though, for bricks one can often get away with really quick methods - such as desaturating and then increasing the contrast until the brick is white and the mortar is black.
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@thomthom said:
Displacement maps and be used as bump maps and vice versa.
@chips_007 said:
At present I open the texture in PS, create a new layer above it, add fill - 50% grey and set blending to saturation.
This would be the same as applying a a desaturation adjustment to it.
Creating a bumpmap is not as simple as that though. Remember that white represent raised areas and black represent low areas.Say you have a texture of a tile - the tile is yellow and on the tile there is blue print. If you simply desaturate that you will get a darker area for the blue text than the yellow surface it's on - even though the surface is completely flush.
Instead you need to extract the raised and lowered areas and generate a bump map that represent the surface topology. I some times trace over the diffuse creating the bump completely from scratch.Though, for bricks one can often get away with really quick methods - such as desaturating and then increasing the contrast until the brick is white and the mortar is black.
Ok great, I was actually just starting to play around with brick textures. I will try some methods you mentioned above.
Thanks
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If you go to the NVida (sp) web site, it has a Photoshop plugin tool that does all this for you...For free
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