NASA NTRS · 19670000005
Digital computer processing of X-ray photos
Abstract
Digital computers correct various distortions in medical and biological photographs. One of the principal methods of computer enhancement involves the use of a two-dimensional digital filter to modify the frequency spectrum of the picture. Another computer processing method is image subtraction.
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Nathan, R., Selzer, R. H.. 1967-01-01. Digital computer processing of X-ray photos. https://ntrs.nasa.gov/citations/19670000005
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