Adaptive gradient removal

Image processing, astrometry, photometry, etc.
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brujo
Posts: 15
Joined: 24 Jan 2019, 20:41

Adaptive gradient removal

Post by brujo » 13 Apr 2022, 11:57

I am trying to use adaptive gradient removal on image PIC1.
In preview it looks great (PIC2), but when I click OK the image gets wierd (PIC3).
Attachments
PIC3.jpg
PIC2.jpg
PIC1.jpg

fabdev
Posts: 461
Joined: 03 Dec 2018, 21:43

Re: Adaptive gradient removal

Post by fabdev » 13 Apr 2022, 21:41

Hi, the dynamic range of the image is too small (423..450, only 27 steps!).
You may solve converting the image to floating point before applying the filter (the preview is in floating point).
Or, to continue working with integer numbers, you may multiply the image by 10 or more.

brujo
Posts: 15
Joined: 24 Jan 2019, 20:41

Re: Adaptive gradient removal

Post by brujo » 15 Apr 2022, 00:51

Converting to floating point solves the problem.
Thank You!

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