Abstract:
Image-based rendering is a powerful new approach for generating real-time photorealistic computer graphics. It can provide convincing animations without an explicit geometric representation. We use the "plenoptic function " of Adelson and Bergen to provide a concise problem statement for image-based rendering paradigms, such as morphing and view interpolation. The plenoptic function is a parameterized function for describing everything that is visible from a given point in space. We present an image-based rendering system based on sampling, reconstructing, and resampling the plenoptic function. In addition, we introduce a novel visible surface algorithm and a geometric invariant for cylindrical projections that is equivalent to the epipolar constraint defined for planar projections. CR Descriptors: I.3.3 [Computer Graphics]: Picture/Image Generation-- display algorithms, viewing algorithms; I.3.7 [Computer Graphics]: Three-Dimensional Graphics and Realism-- hidden line/
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APPENDIX We will show how occlusion compatible mappings can be determined on local spherical frames embedded within a global cartesian frame, W. The projected visibility algorithm for cylindrical surfaces given in the paper can be derived by reducing it t
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