Sometimes the image is very dark

[niciBume]

In the manual of the JoyIt camera, it is mentioned to give the camera 2s time such that it can adjust its exposure time or something like that. In this project we can't give it that much time, so every 60th image will be underexposed and consequently appear quite dark. Because we have to refresh the camera to achieve this high framerate and resolution => dirty hack.
And the cascade seems to be biased against darker images which sucks a little...