Fabricating Translucent Materials Using Continuous Pigment Mixtures

Authors

Marios Papas (Disney Research Zurich)
Christian Regg (Disney Research Zurich, ETH Zurich)
Wojciech Jarosz (Disney Research Zurich)
Bernd Bickel (Disney Research Zurich)
Phil Jackson (Walt Disney Imagineering)
Wojciech Matusik (Disney Research Zurich, MIT)
Steve Marschner (Cornell University)
Markus Gross (Disney Research Zurich)

ACM SIGGRAPH 2013

July 22, 2013

Fabricating Translucent Materials Using Continuous Pigment Mixtures-Image

Figure 1: A side by side comparison of real translucent materials (right) next to their silicone replicas (left) fabricated using our method.

We present a method for practical physical reproduction and design of homogeneous materials with desired subsurface scattering. Our process uses a collection of different pigments that can be suspended in a clear base material. Our goal is to determine pigment concentrations that best reproduce the appearance and subsurface scattering of a given target material. In order to achieve this task we first fabricate a collection of material samples composed of known mixtures of the available pigments with the base material. We then acquire their reflectance profiles using a custom-built measurement device. We use the same device to measure the reflectance profile of a target material. Based on the database of mappings from pigment concentrations to reflectance profiles, we use an optimization process to compute the concentration of pigments to best replicate the target material appearance. We demonstrate the practicality of our method by reproducing a variety of different translucent materials. We also present a tool that allows the user to explore the range of achievable appearances for a given set of pigments.

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