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• W2074026512 abstract "When using plenoptic camera for digital refocusing, angular undersampling can cause severe (angular) aliasing artifacts. Previous approaches have focused on avoiding aliasing by pre-processing the acquired light field via prefiltering, demosaicing, reparameterization, etc. In this paper, we present a different solution that first detects and then removes aliasing at the light field refocusing stage. Different from previous frequency domain aliasing analysis, we carry out a spatial domain analysis to reveal whether the aliasing would occur and uncover where in the image it would occur. The spatial analysis also facilitates easy separation of the aliasing vs. non-aliasing regions and aliasing removal. Experiments on both synthetic scene and real light field camera array data sets demonstrate that our approach has a number of advantages over the classical prefiltering and depth-dependent light field rendering techniques." @default.
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• W2074026512 date "2014-06-01" @default.
• W2074026512 modified "2023-10-16" @default.
• W2074026512 title "Aliasing Detection and Reduction in Plenoptic Imaging" @default.
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• W2074026512 doi "https://doi.org/10.1109/cvpr.2014.425" @default.
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