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Recent developments at JPL in the application of digital image processing techniques to astronomical imagesSeveral techniques of a digital image-processing nature are illustrated which have proved useful in visual analysis of astronomical pictorial data. Processed digital scans of photographic plates of Stephans Quintet and NGC 4151 are used as examples to show how faint nebulosity is enhanced by high-pass filtering, how foreground stars are suppressed by linear interpolation, and how relative color differences between two images recorded on plates with different spectral sensitivities can be revealed by generating ratio images. Analyses are outlined which are intended to compensate partially for the blurring effects of the atmosphere on images of Stephans Quintet and to obtain more detailed information about Saturn's ring structure from low- and high-resolution scans of the planet and its ring system. The employment of a correlation picture to determine the tilt angle of an average spectral line in a low-quality spectrum is demonstrated for a section of the spectrum of Uranus.
Document ID
19770041849
Document Type
Conference Proceedings
Authors
Lorre, J. J. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Lynn, D. J. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Benton, W. D. (California Institute of Technology, Jet Propulsion Laboratory, Image Processing Laboratory, Pasadena Calif., United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1976
Subject Category
ASTRONOMY
Meeting Information
Seminar on Image processing(Pacific Grove, CA)
Funding Number(s)
CONTRACT_GRANT: NAS7-100
Distribution Limits
Public
Copyright
Other