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For refcode 1998A&AS..128..397S:
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Copyright by European Southern Observatory (ESO). Reproduced by permission
1998A&AS..128..397S Structure detection in low intensity X-ray images. Starck J.-L., Pierre M. Received April 22; accepted July 10, 1997 Abstract. 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. Key words: X-rays: general - methods: data analysis - methods: statistical - techniques: image processing
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