Printing Spatially-Varying Reflectance
ACM Transactions on Graphics (Proc. SIGGRAPH Asia), December 2009.
Wojciech Matusik, Boris Ajdin, Jinwei Gu, Jason Lawrence, Hendrik P. A. Lensch, Fabio Pellacini, Szymon Rusinkiewicz
Abstract
Although real-world surfaces can exhibit significant variation in
materials—glossy, diffuse, metallic, etc.—printers are usually
used to reproduce color or gray-scale images. We propose a complete
system that uses appropriate inks and foils to print documents
with a variety of material properties. Given a set of inks with
known Bidirectional Reflectance Distribution Functions (BRDFs),
our system automatically finds the optimal linear combinations to
approximate the BRDFs of the target documents. Novel gamutmapping
algorithms preserve the relative glossiness between different
BRDFs, and halftoning is used to produce patterns to be sent to
the printer. We demonstrate the effectiveness of this approach with
printed samples of a number of measured spatially-varying BRDFs.