Author Topic: Star removal request  (Read 3981 times)

Offline Buzz

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Star removal request
« on: 2014 July 14 06:24:51 »
This may highlight my lack of knowledge of using PI but a utility to extract stars would be very useful for NB processing. Something along the lines of Straton but with the PI expertise?  A search does come up with some ideas so it maybe a batch process at the end of the day rather than a single process.
regards
Chris
regards
Chris

Offline Carlos Milovic

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Re: Star removal request
« Reply #1 on: 2014 July 14 07:24:18 »
Hi Chris
We are close to release a new tool that will help in this task: TGVInpaint. This is an inpaint process, that may be used to remove stars, blooming, etc. This process has an inbuilt precondition routine that tries to preserve image features, and then a smoothing phase, where intensities are matched, and also gradients.
The result is often too smooth, but we may recover the texture with a noise generator (we are going to release an enhanced tool for that purpose).
The most critical step for doing this is the mask generation. Right now we may use StarMask or the detection routines in StarAlign, but I think that more work is needed to fulfit the needs of an optimal star removal (morphologival filters, merge different masks for different star sizes, or even remove some details that do not belong to stars).
Stay tuned.
Regards,

Carlos Milovic F.
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PixInsight Project Developer
http://www.pixinsight.com

Offline Buzz

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Re: Star removal request
« Reply #2 on: 2014 July 15 04:48:32 »
Thanks for that- most of the other tools are iterative, working at different scales each time. I could see that you could do the same with multiscale star detection.... I can almost visualise the dialog box...
regards
Chris