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Cauchy Aperture and Perfect Reconstruction Filters for Extending Depth-of-Field from Focal Stack
Akira KUBOTA Kazuya KODAMA Asami ITO
IEICE TRANSACTIONS on Information and Systems
Publication Date: 2019/11/01
Online ISSN: 1745-1361
Type of Manuscript: Special Section PAPER (Special Section on Picture Coding and Image Media Processing)
extended depth-of-field, focal stack, aperture, perfect reconstruction filters, image fusion,
Full Text: FreePDF(3.8MB)
A pupil function of aperture in image capturing systems is theoretically derived such that one can perfectly reconstruct all-in-focus image through linear filtering of the focal stack. The perfect reconstruction filters are also designed based on the derived pupil function. The designed filters are space-invariant; hence the presented method does not require region segmentation. Simulation results using synthetic scenes shows effectiveness of the derived pupil function and the filters.