Automatic Noise Estimation from the Multiresolution Support
J. L. Starck, F. Murtagh;
PASP, 1998, 110, 193
ABSTRACT: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.
KEYWORDS: methods: statistical, methods: data analysis
CODE: starck98