Abstract

In their paper “Role of optics in the accuracy of depth-from-defocus systems” [J. Opt. Soc. Am. A 24, 967 (2007)] the authors Blayvas, Kimmel, and Rivlin discuss the effect of optics on the depth reconstruction accuracy. To this end they applied an approach in Fourier space. An alternative derivation of their result in the spatial domain, based on geometrical optics, is presented and compared with their outcome. A better agreement with experimental data is achieved if some unclarities are refined.

© 2007 Optical Society of America

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