Nope, it doesn't. Just run the filter on a greyscale layer, set the layer mode to Overlay, and do Adjust -> Levels -> blue channel set max brightness to 127.
This old thread left me unsure if thats the best method. http://boards.polycount.net/showflat.php?Cat=0&Board=3&Number=20539 Why the blue channel only? Again, wont overlay pick up all height/depth differences? (as per strangefate points out). I mean we are talking about a very complex surface here, not a flat plane. If you…