Hello, currently i'm working on a platform, already introduced in this question .
As I stated there, i'm working with a PiNoIRCamera V2, to study the heatlth of urban vegetation. And as @cfastie told, i will need to set a custom white balance, in order to make image more sensible to the blue band...
So anyone knows optimum values for the awb_gains settings for the Pi Camera?
Hello, my input might guide you in the right direction. Different environments require different settings so it might be hard to generalize. I did some testing with a red filter today and found that using the settings 0.74 for red and 1.18 for blue generated good results. As a general rule of thumb you need to have higher values for the blue channel when using a red filter. Keep changing the values until the image captured has an even mix of red and blue. I use a python script I wrote to calibrate my camera. You can find it here: https://github.com/PiddePannkauga/PiCameraGui
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Hi! Noting this project which may be of interest: https://gitlab.com/bath_open_instrumentation_group/picamera_cra_compensation
And pinging @maggpi who's done some great related Pi stuff! (https://publiclab.org/questions/MaggPi/04-26-2018/which-public-lab-kit-is-best-for-testing-the-impact-of-different-camera-settings)
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Also noting this page with good notes on blue filters: https://publiclab.org/questions/patalbright/10-20-2020/how-to-find-the-sweet-spot-for-manual-white-balance-settings-using-pi-noir-and-a-blue-filter-with-artificial-full-spectrum-lighting
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