Can you help troubleshoot my TGV Denoise steps?

[msmythers]

Sorry for the confusion Jim. I meant non-linear when I see the mask close at 1. And yes I use MLT for non-linear also. I will use the Starlet algorithm. MLT is the replacement for ATWT which is now depreciated. MLT added the linear mask and linear algorithm. There is no need to use ATWT that I can see. I  use MMT late in processing more for high contrast images. In the past I would use ACDNR. I do wish the mask function had finer control when using it with non-linear images. That is one of the things that makes ACDNR so strong is it's great mask feature. That being said a value of 1 or 2 generally works well from the linear mask. A value of 1 with the linear mask is basically like making a clone of the image.


Here is a quote from Juan on MLT and MMT from a posting last April http://pixinsight.com/forum/index.php?topic=6972.0

* The new MultiscaleLinearTransform (MLT) tool replaces ATrousWaveletTransform (which is now deprecated but maintained for compatibility). MLT introduces a new linear multiscale transform based on multiple Gaussian filters, besides the starlet transform (aka à  trous wavelet transform).

* The MultiscaleMedianTransform (MMT) tool introduces a new median-wavelet transform that splits the multiscale representation optimally into wavelets for nonsignificant structures and the median transform for high-contrast structures.

* New linear mask feature integrated in the MLT and MMT tools. Linear masks greatly enhance noise reduction of raw linear images.


Mike

[jkmorse]

Mike,

Thanks for that.  Old habits die hard and sometimes I still get nice results with ATWT, but that's because I never tried MLT after stretching.  New work item to test this week.

Best,

Jim

[pvelez]

Thanks for all the feedback gentlemen

I'd best get back to the computer to test these all out

Pete

[avarakin]

I never had much luck with built in mask of MLT - in my mind it is too "binary". When I build my own mask I have much more freedom of which areas to mask fully and which to mask partially.
My only issue with MLT is that it leaves dark blotches. I recently figured out how to fill them in - I create an image with only  noise and then using pixel math, fill in the noise into dark areas before applying MLT. It helps a lot. It is maybe cheating but it works very well

Alex