Perceptual Global Illumination Cancellation in Complex Projection Environments

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dc.contributor.authorSheng, Yuen_US
dc.contributor.authorCutler, Barbaraen_US
dc.contributor.authorChen, Chaoen_US
dc.contributor.authorNasman, Joshuaen_US
dc.contributor.editorRavi Ramamoorthi and Erik Reinharden_US
dc.date.accessioned2015-02-27T14:45:38Z
dc.date.available2015-02-27T14:45:38Z
dc.date.issued2011en_US
dc.description.abstractThe unintentional scattering of light between neighboring surfaces in complex projection environments increases the brightness and decreases the contrast, disrupting the appearance of the desired imagery. To achieve satisfactory projection results, the inverse problem of global illumination must be solved to cancel this secondary scattering. In this paper, we propose a global illumination cancellation method that minimizes the perceptual difference between the desired imagery and the actual total illumination in the resulting physical environment. Using Gauss-Newton and active set methods, we design a fast solver for the bound constrained nonlinear least squares problem raised by the perceptual error metrics. Our solver is further accelerated with a CUDA implementation and multi-resolution method to achieve 1-2 fps for problems with approximately 3000 variables. We demonstrate the global illumination cancellation algorithm with our multi-projector system. Results show that our method preserves the color fidelity of the desired imagery significantly better than previous methods.en_US
dc.description.seriesinformationComputer Graphics Forumen_US
dc.identifier.issn1467-8659en_US
dc.identifier.urihttps://doi.org/10.1111/j.1467-8659.2011.01985.xen_US
dc.publisherThe Eurographics Association and Blackwell Publishing Ltd.en_US
dc.titlePerceptual Global Illumination Cancellation in Complex Projection Environmentsen_US
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EGSR11: 22th Eurographics Symposium on Rendering