β Scribed by T.E. Gureyev; A.W. Stevenson; Ya.I. Nesterets; S.W. Wilkins
No coin nor oath required. For personal study only.
A new method for rapid deblurring (partial deconvolution) is proposed which is based on the physics of coherent image formation. The method uses slightly out-of-focus images in a way that makes the Fresnel diffraction counteract the blurring due to the point-spread function. The resultant deblurring improves spatial resolution in the images and is remarkably insensitive to noise. Successful performance of several variants of this technique is demonstrated using simulated and experimental images. It is anticipated that this method will find applications in medical, astronomical and other imaging problems, as well as in lithography.
π SIMILAR VOLUMES
A spatial domain technique for restoring out-+focus images, with a minimum a priori knowlealge about the Point-Spread Function (PSF) of the imaging system, is presented. In the proposed algorithm an estimate of the spatial constant (a) of the Gaussian PSF is obtained, which is then utilized to calc