substitute a selection with average of sorrounding pixel

[lucchett]

hi, is this already possible in PI?
I am looking for a way to "cancel the stars", preserving the nebulae behind (or better givin continuity)

Thanks,
Andrea

[Juan Conejero]

Hi Andrea,

Of course it is possible. There are several possibilities:

- Use the CloneStamp tool to carry out this task manually.
- Use wavelet transforms to isolate the stars.
- Use morphological transformations (median filters).

If what you're trying to remove are some localized features, such as dead rows or a few small defects, a relatively simple script can be very efficient. An example is this tutorial:

http://pixinsight.com/examples/deconvolution/Gemini-NGC5189/en.html

Use the left menu to jump to "Fixing Dead Pixel Rows with a JavaScript Script", and watch the mouse comparison. These scripts must be adapted to each particular case.

[lucchett]

Thanks Juan,
I'll try to look at the script and get back with some question.
Andrea