Pyramid maximum entropy images of IRAS survey data

Details Pyramid maximum entropy images of IRAS survey data Pyramid maximum entropy images of IRAS survey data

Apr 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...284.1037b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 284, no. 3, p. 1037-1053

Astronomy and Astrophysics

Astronomy

67

Galaxies, Images, Infrared Astronomy, Infrared Radiation, Maximum Entropy Method, Morphology, Bayes Theorem, Infrared Astronomy Satellite, Single Channel Per Carrier Transmission

Scientific paper

In this paper we present a new method for the construction of high-resolution images from the IRAS survey data base. The method, Pyramid Maximum Entropy (PME), is a special application of multi-channel maximum entropy image construction techniques, using pyramid images in which each of the (K + 1) image channels covers the same map area, but contains 2k x 2k (k = 0, 1, ..., K) pixels. The final result is a 2K x 2K-pixel image. We present images in all four survey wavelength bands (12, 25, 60, and 100 micrometers) of three nearby galaxies with different morphologies, to illustrate the quality of the PME results. A summary of the principles of Bayesian image (reconstruction) on which PME is based, and the mathematical foundation for incorporating spatial correlations in images are included in two appendices.

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