IPT/EGVE 2007: 11th International Workshop on Immersive Projection Technology, 13th Eurographics Workshop on Virtual Enviroments
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Browsing IPT/EGVE 2007: 11th International Workshop on Immersive Projection Technology, 13th Eurographics Workshop on Virtual Enviroments by Subject "Categories and Subject Descriptors (according to ACM CCS): I.3.3 [Computer Graphics]: Multi-Projector Tiled Display"
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Item A GPU-Based Framework of Photometric Uniformity for Multi-Projector Tiled Display(The Eurographics Association, 2007) Yuan, Guodong; Qin, Kaihuai; Bernd Froehlich and Roland Blach and Robert van LiereIn this paper, we firstly propose a partial-sampling scheme to measure the intensity transfer function of a projector. Secondly, we implement the computation of luminance surface by rendering a texture rectangle on GPU. Thirdly, we generate an unified index data for all projectors. And then we compute the masks of photometric correction using a GPU based on topological consistency. Finally we integrate the masks with a GPU-based photometric correction pipeline to achieve the photometric uniformity for multi-projector display. The GPU-based framework is a combination of the GPU-based computation and the GPU-based photometric correction pipeline, which removes the bottleneck of the computation of luminance surface, attenuation mask and black offset mask. It is shown by experimental results prove that the GPU-based framework is effective and efficient.