Manufacturing Layered Attenuators for Multiple Prescribed Shadow Images

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dc.contributor.authorBaran, Ilyaen_US
dc.contributor.authorKeller, Philippen_US
dc.contributor.authorBradley, Dereken_US
dc.contributor.authorCoros, Stelianen_US
dc.contributor.authorJarosz, Wojciechen_US
dc.contributor.authorNowrouzezahrai, Dereken_US
dc.contributor.authorGross, Markusen_US
dc.contributor.editorP. Cignoni and T. Ertlen_US
dc.date.accessioned2015-02-28T06:55:18Z
dc.date.available2015-02-28T06:55:18Z
dc.date.issued2012en_US
dc.description.abstractWe 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.en_US
dc.description.seriesinformationComputer Graphics Forumen_US
dc.description.volume31
dc.identifier.doi10.1111/j.1467-8659.2012.03039.x
dc.identifier.issn1467-8659en_US
dc.identifier.urihttps://doi.org/10.1111/j.1467-8659.2012.03039.xen_US
dc.publisherThe Eurographics Association and John Wiley and Sons Ltd.en_US
dc.titleManufacturing Layered Attenuators for Multiple Prescribed Shadow Imagesen_US
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