Abstract

A new method is proposed for estimating the parameters of the point-spread function from the Fourier spectrum of a distorted image. When there is blurring of an image, its spectrum is compressed in the direction of the blurring, and this makes it possible to estimate the direction and magnitude Δ of the blurring. In the case of defocusing, the spectrum is also deformed proportionally to the defocusing radius ρ, and this makes it possible to estimate ρ. Numerical examples are given of the application of this technique to a tomographic image.

© 2015 Optical Society of America

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