A method of deblurring an image is described that uses an achromatic, coherent optical-processing system and either one or two diffraction gratings. One grating, after differentiation, serves as a reference function that is cross correlated with the blurred image.
© 1980 Optical Society of America
E. N. Leith, "Image deblurring using diffraction gratings," Opt. Lett. 5, 70-72 (1980)