Questions About 'trous' Denoising Plugin

Posted by McAuley, Grant (LLU) on
URL: http://imagej.273.s1.nabble.com/Questions-About-trous-Denoising-Plugin-tp3699266.html

I want to understand how to use the 'trous wavelet filter' plugin.  I think I have at least a pretty good *intuitive* understanding about the basics of wavelets, and would welcome any information about this at that level.

Am I correct:

1) The filtering is based on the 'cascading filter' idea
2) k1 is the coefficient that corresponds to the highest detail component of the image
3) k5 is the coefficient that corresponds to the lowest detail (most course) component of the image


Re the coefficient values:

3) if I set k1 = '5.0', what does this mean?  Does it mean 'remove the image components if the k1 coef of the wavelet transform is below 5.0'?  Is it a threshold in another sense?  

Finally, if someone could recommend an easy reading reference on this that would be helpful as well.