Hi there,
In reality, determining the correct values isn't reallly that difficult, but you need to take the time to understand what is going on. And, the really good thing is that PI will let you repeat the process quite quickly once it has performed the first ImageIntegration pass.
The first thing you need to do is to make sure that you visually inspect the rejected image(s) at each repetition of the II process. Secondly, it might be helpful if you only work with one of the rejection sliders to start with (I'll leave you to experiment with the low-end slider position until the low-end rejected image doesn't contain ANY rejected pixels).
Now you can play with the high-end slider position, adjusting the slider to reject more and more pixels. Obviously you will understand when you have gone 'too far' when you start to see acual image structure start to appear when you apply an STF to the highe-end rejected pixel map - so, you would then back off until you are only rejecting noise.
That's the high-end slider dealt with (I also tweak to try and eradicate eny cosmic ray hits, and sometimes even aircraft trails, etc.) so now you can repeat the process with the low-end slider - remember, you are looking to eradicate noise, and only noise - if you see any kind of image-structure in the rejected-pixel map then, again, you are pushing things too far.
There is nothing special about pixel rejection - other than the usual sorcery and witchcraft that all PixelInsight Processes are imbued with. Just experiment, and May the 4th be with you.
