Digital enhancement of computerized axial tomogramsA systematic evaluation has been conducted of certain digital image enhancement techniques performed in image space. Three types of images have been used, computer generated phantoms, tomograms of a synthetic phantom, and axial tomograms of human anatomy containing images of lesions, artificially introduced into the tomograms. Several types of smoothing, sharpening, and histogram modification have been explored. It has been concluded that the most useful enhancement techniques are a selective smoothing of singular picture elements, combined with contrast manipulation. The most useful tool in applying these techniques is the gray-scale histogram.
Document ID
19790027531
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Roberts, E., Jr. (NASA Lewis Research Center Cleveland, Ohio, United States)