1 June 1974 Restoration Of Radiologic Images By Optical Spatial Filtering
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Finite-size X-ray sources degrade the radiologic image by attenuating the high-frequency components of the image and by phase distorting a significant number of these frequencies. Coherent-optical spatial filtering was employed to correct these distortions in the Fourier transform of the radiologic image. This included the use of amplitude-only and amplitude-and-phase (holographic) filters. The contrast and resolution of X-ray images were improved.
George A. Krusos, "Restoration Of Radiologic Images By Optical Spatial Filtering," Optical Engineering 13(3), 133208 (1 June 1974). https://doi.org/10.1117/12.7971697 . Submission:


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