the command line versions only work on 16-bit tiff files. however, the pixinsight module can run on any view that you have open on the desktop, no matter the bit depth.
although starnet only works on stretched images, astroedo figured out how to run it on linear images by using STF to figure out an MTF curve to temporarily stretch the image in a way that can be undone.
rob
Thanks for the info....I just was corresponding with another member and he said the same thing. I'm just going to play around with it and see what comes out...sure I'll have some more questions!!
Thanks Again!!
Tom
Does anyone know the specific technique to doing the reversible stretch? I've been playing around with the mtf function in PixelMath with mixed results. I'm using mtf(midPoint, $T) to stretch and mtf(1-midPoint, $T) where midPoint is set to the value obtained from an STF on the image (hit radioactive button, then wrench and take the middle value on the RGB/K line). A test of stretch, unstretch, diff shows an almost exact match between the original image and the stretched/unstretched image. Ha Before Stretch shows the pre-stretch setup while Ha After Unstretch shows the images after the unstretch and difference.
Applying StarNet to the Ha images using the stretch and unstretch process noted above yields a pretty good result. Doing the same thing with an Oiii image leaves stars and large white blocks in the image. So clearly this stretch, starnet, unstretch seems to work well with high SNR images and not very well at all with lower SNR images (at least with this stretch / unstretch method).
Ha & Oiii Linear Starless & Oiii NonLinear Starless shows the original and starless images for Ha and Oiii using this stretch / unstretch approach. It also has the results of doing a normal STF / HT permanent stretch on the Oiii followed by StarNet (which did a decent job of removing the stars). So it would appear that the quality of the stretch is a key factor in the operation of StarNet. Note both Ha and Oiii images had minimal processing - integration, DBE, and MLT (to remove the 1st wavelet layer). Tests with earlier stages of the processing (no MLT and no DBE or MLT) showed the stars not being completely removed from the Ha image (this test using an STF/HT permanent stretch).
Any thoughts on alternative approaches to a reversible stretch that might produce better results with the lower SNR images?
Paul