Structure Detection in Low Intensity X-Ray Images

Details Structure Detection in Low Intensity X-Ray Images Structure Detection in Low Intensity X-Ray Images

1997-07-28

arxiv.org/abs/astro-ph/9707305v1

Astronomy and Astrophysics

Astrophysics

11 pages, 9 figures, to appear in Astronomy & Astrophysics

Scientific paper

10.1051/aas:1998150

In the context of assessing and characterizing structures in X-ray images, we compare different approaches. Most often the intensity level is very low and necessitates a special treatment of Poisson statistics. The method based on wavelet function histogram is shown to be the most reliable one. We also present a multi-resolution filtering method based on the wavelet coefficients detection. Comparative results are presented by means of a simulated cluster of galaxies.

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