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21 November 1980 Application Of Moments To The Analysis Of Panoramic Astronomical Photographs
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Proceedings Volume 0264, Applications of Digital Image Processing to Astronomy; (1980)
Event: 1981 Los Angeles Technical Symposium, 1980, Los Angeles, United States
Panoramic astronomical photographs may contain information on up to one million images of stars and galaxies. To extract this information in a day requires a high-speed measuring machine and image analysis system. Each stellar or galaxian image may be regarded as a connected set of pixels above some local threshold. The moments (unit-weighted and intensity-weighted) up to second order of the pixel distribution for each image are calculated and form the basis of a set of image parameters. This type of analysis is suitable for the great majority of images which do not show complex structure intrinsic to the source. These moments provide data in three basic categories of information relevant to the astronomer, i.e., astrometric, photometric and image classification. Application of this scheme and the accuracy of the image parameters is demonstrated with data obtained from the COSMOS measuring machine.
© (1980) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
R. S. Stobie "Application Of Moments To The Analysis Of Panoramic Astronomical Photographs", Proc. SPIE 0264, Applications of Digital Image Processing to Astronomy, (21 November 1980);


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