NASA NTRS · 19750000146
Simple computer method provides contours for radiological images
Abstract
Computer is provided with information concerning boundaries in total image. Gradient of each point in digitized image is calculated with aid of threshold technique; then there is invoked set of algorithms designed to reduce number of gradient elements and to retain only major ones for definition of contour.
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Newell, J. D., Keller, R. A., Baily, N. A.. 1975-07-01. Simple computer method provides contours for radiological images. https://ntrs.nasa.gov/citations/19750000146
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