Goal-Based Caustics


We propose a novel system for designing and manufacturing surfaces that produce desired caustic images when illuminated by a light source.

April 11, 2011
Eurographics 2011



Marios Papas (Disney Research/ETH Joint PhD)

Wojciech Jarosz (Disney Research)

Wenzel Jakob (Disney Research)

Szymon Rusinkiewicz (Princeton University)

Wojciech Matusik (Disney Research)

Tim Weyrich (University College London)

Goal-Based Caustics


Our system is based on a non-negative image decomposition using a set of possibly overlapping anisotropic Gaussian kernels. We utilize this decomposition to construct an array of continuous surface patches, each of which focuses light onto one of the Gaussian kernels, either through refraction or reflection. We show how to derive the shape of each continuous patch and arrange them by performing a discrete assignment of patches to kernels in the desired caustic. Our decomposition provides for high fidelity reconstruction of natural images using a small collection of patches. We demonstrate our approach on a wide variety of caustic images by manufacturing physical surfaces with a small number of patches.

Copyright Notice