Printing Spatially-Varying Reflectance


Wojciech Matusik Boris Ajdin Jinwei Gu Jason Lawrence Hendrik P. A. Lensch Fabio Pellacini Szymon Rusinkiewicz
Adobe Systems, Inc. MPI Informatik Columbia University University of Virginia Ulm University Dartmouth College Princeton University
Siggraph Asia 2009


Top left: Our system represents a target document as a spatially-varying Bidirectional Reflectance Distribution Function (svBRDF). We have developed BRDF gamut-mapping and halftoning algorithms that approximate this svBRDF with a set of printer inks. Bottom left: We previsualize how the document will appear when printed and observed under specified viewpoint and lighting. Right: Printed sample.




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.



Wojciech Matusik, Boris Ajdin, Jinwei Gu, Jason Lawrence, Hendrik P. A. Lensch, Fabio Pellacini, Szymon Rusinkiewicz. Printing Spatially-Varying Reflectance. ACM Transactions on Graphics. 28(5) 2009.