Inter-reflection Compensation of Immersive Projection Display by Spatio-Temporal Screen Reflectance Modulation

IEEE Transactions on Visualization and Computer Graphics
Shoichi TakedaKosuke Sato

Abstract

We propose a novel inter-reflection compensation technique for immersive projection displays wherein we spatially modulate the reflectance pattern on the screen to improve the compensation performance of conventional methods. As the luminance of light reflected on a projection surface is mathematically represented as the multiplication of the illuminance of incident light and the surface reflectance, we can reduce undesirable intensity elevation because of inter-reflections by decreasing surface reflectance. Based on this principle, we improve conventional inter-reflection compensation techniques by applying reflectance pattern modulation. We realize spatial reflectance modulation of a projection screen by painting it with a photochromic compound, which changes its color (i.e., the reflectance of the screen) when ultraviolet (UV) light is applied and by controlling UV irradiation with a UV LED array placed behind the screen. The main contribution of this paper is a computational model to optimize a reflectance pattern for the accurate reproduction of a target appearance by decreasing the intensity elevation caused by inter-reflection while maintaining the maximum intensity of the target appearance. Through simulation and physic...Continue Reading

References

Sep 21, 2004·IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society·Zhou WangEero P Simoncelli
Aug 18, 2010·IEEE Transactions on Visualization and Computer Graphics·Oliver BimberDaniel Kurz
Jun 8, 2013·IEEE Transactions on Visualization and Computer Graphics·Daisuke IwaiKosuke Sato
Jan 22, 2015·Chemical Communications : Chem Comm·Katsutoshi AraiJiro Abe
Sep 12, 2015·IEEE Transactions on Visualization and Computer Graphics·Daisuke IwaiKosuke Sato
Sep 22, 2015·IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society·Anselm Grundhofer, Daisuke Iwai

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