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Digital enhancement of computerized axial tomogramsA systematic evaluation was conducted of certain digital image enhancement techniques performed in image space. Three types of images were 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 were explored. It was 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
19780023747
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Roberts, E., Jr. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 3, 2013
Publication Date
January 1, 1978
Subject Category
Life Sciences (General)
Report/Patent Number
E-9748
NASA-TM-78974
Meeting Information
Meeting: Ann. Computers in Cardiology Conf.
Location: Stanford, CA
Country: United States
Start Date: September 12, 1978
End Date: September 14, 1978
Sponsors: NIH, Stanford Univ. School of Med., IEEE
Accession Number
78N31690
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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