Plenoptic sampling

This paper studies the problem of plenoptic sampling in imagebased rendering (IBR). From a spectral analysis of light field signals and using the sampling theorem, we mathematically derive the analytical functions to determine the minimum sampling rate for light field rendering. The spectral support of a light field signal is bounded by the minimum and maximum depths only, no matter how complicated the spectral support might be because of depth variations in the scene. The minimum sampling rate for light field rendering is obtained by compacting the replicas of the spectral support of the sampled light field within the smallest interval. Given the minimum and maximum depths, a reconstruction filter with an optimal and constant depth can be designed to achieve anti-aliased light field rendering. Plenoptic sampling goes beyond the minimum number of images needed for anti-aliased light field rendering. More significantly, it utilizes the scene depth information to determine the ...

• Type: Conference
• Year: 2000
• Where: SIGGRAPH
• Authors: Jinxiang Chai, Shing-Chow Chan, Heung-Yeung Shum, Xin Tong
• Keywords: Computer Graphics, Light field Rendering, Minimum Sampling, Minimum Sampling Rate, SIGGRAPH 2000