ZBrushCentral

Creating a cavity map from a normal map.

I have a low poly face that has been normal mapped. All of the high details like pores and fine wrinkles were added in photoshop. I am attempting to use zmapper to generate a cavity map from my normal map, using my low poly model. All I can get it to do is render a cavity map of the actual model, its not using the normal map that is applied. How do I make it so?

Post screen shots so we can see the problem. Zmapper doesn’t derive the cavity map from the normal map, it simply analysis your ztool and makes a black on white map based on the cracks and crevices on your tool.