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How do you position a displacement map?
I want to do something simple (so I thought). I want to displace one image with another, but I want to be able to position the displacement image somewhere other than “center”. I can center, strech or tile the displacement but I can’t pick where the displacement shows up on the image that is being displaced.
Is there a way to do this? I have tried setting the position of the displacement image and pre-composing, didn’t work.
HELP!!
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3 Replies
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Check out Aharon’s tutorial on displacement maps. Also try searching the site or at least browsing through some of the tutorials before asking next time. This is a common problem that I’m sure you can find solutions to on this site. I don’t want to sound harsh, but if people keep posting FAQs on this forum it will be clogged with unnecesary posts.
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[recon007jf] “I have tried setting the position of the displacement image and pre-composing, didn’t work.”
Because you did it the wrong way, presumably. Keep in mind those 2 simple rules:
a) Ideally, always match the sizes of your displacement map to the footage
b) Displacement works on pixel values. A black composition background has no “real” pixels, it’s transparent and thus ignored by displacement maps. Place a 50% grey, pure white or pure black layer behind your other footage to get proper results.Beyond that, there is not really that much to consider.
Mylenium
[Pour Myl
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To be able to position a displacement map you would need to precomp the map and make the position changes inside the precomp. The displacement map filter looks at the source image of the map and does not take into consideration transformations of the map.
Mark
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