Recent developments at JPL in the application of image processing to astronomyFour applications of image processing to astronomy, automated location and analysis of star and galaxy images, geometric and radiometric decalibration of vidicon spectra, display of multiband radio images, and generation of high resolution polarization direction and magnitude maps from images are presented with illustrative examples. The technique by which a digital image can be analyzed automatically to locate and segregate between stars and galaxies and the steps performed by the classifier to determine the nature of each object are outlined. The classification program executed on a 48 inch Schmidt plate of the cluster of galaxies 655 is described. The calibration and decalibration steps to remove geometric and radiometric distortions from a silicon vidicon camera digital spectra are discussed. Three methods of displaying multispectral radio data, generating a mosaic of each image, producing a color coded image to depict radio velocity, and producing a stereo pair with radial velocity as depth are described. The generation of polarization information from images obtained through linear polarizing filters is illustrated, and it is concluded that in each case information was displayed using digital techniques which could not readily have been provided visually.
Document ID
19790054291
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Lorre, J. J. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Benton, W. D. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Elliott, D. A. (California Institute of Technology, Jet Propulsion Laboratory, Pasadena Calif., United States)