Automatic Noise Estimation from the Multiresolution Support

Details Automatic Noise Estimation from the Multiresolution Support Automatic Noise Estimation from the Multiresolution Support

Feb 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998pasp..110..193s&link_type=abstract

The Publications of the Astronomical Society of the Pacific, Volume 110, Issue 744, pp. 193-199.

Astronomy and Astrophysics

Astronomy

26

Methods: Statistical, Methods: Data Analysis

Scientific paper

We describe an automated approach for determining the noise associated with astronomical images. Detector noise is ever present and must be determined for high-quality image filtering or compression. We also show that the method can be used for very high quality cosmic-ray hit removal. Our method is based on a multiresolution transform of the image, the à trous wavelet transform. We present a range of examples and applications to illustrate the effectiveness of this approach.

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