Hi,
yes, I used to be an amateur photographer. And I have a colorchecker passport, but the combination of lights is too complex because it depends if the day is sunny, cloudy or night, if the greenhouse fluorescent lights are on, also if the ones in the adjacent greenhouse are on, and also on the streetlamps at night.
But the idea of having a fixed greycard in the picture and computing the colour gains seems interesting. Would it be as simple as calculating the multipliers so that each RGB channel has the same value? but I would need the "RAW" data without any white balance applied, right? If it is like that I could then take a picture with the command line command (or picamera2) with the right colour gains (and also exposure, since the grey card should be ~127). Could this work? If I need it, how do I get the "RAW" data? (I found this thread viewtopic.php?t=362602)
Thanks for your time!
Pau
yes, I used to be an amateur photographer. And I have a colorchecker passport, but the combination of lights is too complex because it depends if the day is sunny, cloudy or night, if the greenhouse fluorescent lights are on, also if the ones in the adjacent greenhouse are on, and also on the streetlamps at night.
But the idea of having a fixed greycard in the picture and computing the colour gains seems interesting. Would it be as simple as calculating the multipliers so that each RGB channel has the same value? but I would need the "RAW" data without any white balance applied, right? If it is like that I could then take a picture with the command line command (or picamera2) with the right colour gains (and also exposure, since the grey card should be ~127). Could this work? If I need it, how do I get the "RAW" data? (I found this thread viewtopic.php?t=362602)
Thanks for your time!
Pau
Statistics: Posted by paussus — Thu Nov 21, 2024 11:34 am
