3D Video Billboard Clouds |
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Authors: | Michael Waschbüsch† Stephan Würmlin‡ Markus Gross§ |
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Affiliation: | Computer Graphics Laboratory, ETH Zurich, Switzerland;LiberoVision Inc., Switzerland |
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Abstract: | 3D video billboard clouds reconstruct and represent a dynamic three-dimensional scene using displacement-mapped billboards. They consist of geometric proxy planes augmented with detailed displacement maps and combine the generality of geometry-based 3D video with the regularization properties of image-based 3D video. 3D video billboards are an image-based representation placed in the disparity space of the acquisition cameras and thus provide a regular sampling of the scene with a uniform error model. We propose a general geometry filtering framework which generates time-coherent models and removes reconstruction and quantization noise as well as calibration errors. This replaces the complex and time-consuming sub-pixel matching process in stereo reconstruction with a bilateral filter. Rendering is performed using a GPU-accelerated algorithm which generates consistent view-dependent geometry and textures for each individual frame. In addition, we present a semi-automatic approach for modeling dynamic three-dimensional scenes with a set of multiple 3D video billboards clouds. |
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Keywords: | I 3 7 [Computer Graphics]: Three-Dimensional Graphics and Realism H 5 1 [Information Interfaces and Presentation]: Multimedia Information Systems–Video |
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