Manufacturing Layered Attenuators for Multiple Prescribed Shadow Images
Loading...
Date
2012
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association and John Wiley and Sons Ltd.
Abstract
We present a practical and inexpensive method for creating physical objects that cast different color shadow images when illuminated by prescribed lighting configurations. The input to our system is a number of lighting configurations and corresponding desired shadow images. Our approach computes attenuation masks, which are then printed on transparent materials and stacked to form a single multi-layer attenuator. When illuminated with the input lighting configurations, this multi-layer attenuator casts the prescribed color shadow images. Alternatively, our method can compute layers so that their permutations produce different prescribed shadow images under fixed lighting. Each multi-layer attenuator is quick and inexpensive to produce, can generate multiple full-color shadows, and can be designed to respond to different types of natural or synthetic lighting setups. We illustrate the effectiveness of our multi-layer attenuators in simulation and in reality, with the sun as a light source.
Description
@article{10.1111:j.1467-8659.2012.03039.x,
journal = {Computer Graphics Forum},
title = {{Manufacturing Layered Attenuators for Multiple Prescribed Shadow Images}},
author = {Baran, Ilya and Keller, Philipp and Bradley, Derek and Coros, Stelian and Jarosz, Wojciech and Nowrouzezahrai, Derek and Gross, Markus},
year = {2012},
publisher = {The Eurographics Association and John Wiley and Sons Ltd.},
ISSN = {1467-8659},
DOI = {10.1111/j.1467-8659.2012.03039.x}
}