Rendering translucency with Perlin noise

Abstract

Translucent photon mapping is a technique developed for the realistic rendering of translucent materials such as milk, skin, and fog. In the physical world, however, no material is perfectly translucent at a constant density. By using a 3D density map for a rendered object and jittering the values of the map by using a Perlin noise function will create a non-perfect density throughout the object and thereby present a more realistic image.