PixInsight LE includes a powerful and flexible tool for wavelets processing, built around the à trous discrete wavelet transform algorithm, which can be used to accomplish both noise reduction and detail enhancement tasks very efficiently.

If you aren't familiar with concepts like characteristic scales, wavelets, or multiscale (multiresolution) analysis, perhaps you might consider reading an introductory document on these and other topics related to wavelets processing before going on with the details of PixInsight's implementation.

::Index

Understanding the Multiscale Language

The À Trous Discrete Wavelet Transform In PixInsight

The À Trous Wavelets Window