PixInsight Forum (historical)

PixInsight => Bug Reports => Topic started by: georg.viehoever on 2010 February 03 11:30:28

Title: Color Calibration Background Mask does not see background
Post by: georg.viehoever on 2010 February 03 11:30:28

Hi,

I am using ColorCalibration, and I just cannot get it to use my background image. As seen in the screenshot, I have set LowerLimit to 0 and HigherLimit to 1.0, so I would expect the background reference mask to be fully white. Which obviously it is not...

Georg

Title: Re: Color Calibration Background Mask does not see background
Post by: Harry page on 2010 February 03 12:23:17

Hi

I wish I had something sensible to say , but I can't get my PI to do this  ???


Harry

Title: Re: Color Calibration Background Mask does not see background
Post by: Juan Conejero on 2010 February 08 03:46:21

Hi Georg,

To say something useful I'd need to have a look at the image. Could you upload it, or a significant crop of it?

Title: Re: Color Calibration Background Mask does not see background
Post by: georg.viehoever on 2010 February 09 10:16:57

Hi Juan,

I uploaded example files for you yesterday evening. Good luck with tracking down the issue.

Georg

Title: Re: Color Calibration Background Mask does not see background
Post by: Juan Conejero on 2010 February 19 01:47:33

Hi Georg,

This is to inform you that I have fixed this bug. The ColorCalibration module will always output correct background masks in the next version.

Note that this bug only affects background mask generation; mean background values are correctly calculated. As a workaround, simply enter a high background value slightly above the median of the background reference image, and don't trust background masks if your image has very weak signal levels.

Thank you for your invaluable help.