Hi there,
Specifically with 64MP images and the OV64A0 camera module, I am seeing a very large number of pink images. This is across multiple sensors and multiple RPi5s.
Is there a way we can have a better default calibration in the libcamera repo?
Or ways to improve / avoid the AWB turning the sky pink?
Hi @wallarug
I make this camera face the diffusion panel to reproduce the pink shading issue. However, it looks great without any pink tint. The picture I got is entirely white.
Could you plz post the pink images here? Did you put the camera under daylight or sunlight conditions?
Hi Dion,
I managed to figure this one out last week.
The issue is the calibration inside the libcamera stack is wrong.
I had to turn off the auto gain parameter and then the pink images stopped occurring.
Using --analoggain 1.0 makes the pink go away.
I also added a custom calibration file with lower red gain. The one in the library does not appear to be very good.
I am in the process of trying to implement HDR for this sensor - however - I need the documentation for the registers to put it into libcamera/rpicam-apps. Is there any chance someone can help me with this?
Happy to sign NDA or whatever to implement this feature - HDR would be a huge benefit in this use-case.
