Gregory McCoy


Using lensless Fourier transform holography the problem of deblurring an out-of-focus image on a photographic transparency was studied. First a lensless Fourier transform hologram of an out-of-focus image was taken using a point reference source. By replacing this hologram into the recording plane and re-illuminating it with coherent light, the imaging wave transmitted through the hologram immediately gives, by Fourier transformation, the restored, deblurred image. A bar target was photographed out-of-focus, and using this method, with subjective analysis at 95% confidence, the deblurred image was judged better than the original. This method of image deblurring does indeed work, but the restoration process is limited by the amount the transparency was out-of-focus to begin with.

Library of Congress Subject Headings

Holography; Fourier transformations

Publication Date


Document Type

Senior Project

Student Type


Department, Program, or Center

School of Photographic Arts and Sciences (CIAS)


Carson, John


Note: imported from RIT’s Digital Media Library running on DSpace to RIT Scholar Works. Physical copy available through RIT's The Wallace Library at: QC449.M32


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