Why and how to overcome brightness of grab image get darker when enlarge frame size of MV-H7 CMOS sensor

OpenMV Products
1

Do any one find this problem under MV-H7 when CMOS
sensor.snapshot() under sensor.set_framesize(sensor.QVGA)
that image brightness is well , but when framesize change to (sensor.VGA) then brightness of image acquire will darker ? I have
try to add set_brightness( ) but still can not get mass improvement …
any suggestion or idea to overcome this issue ??

2

It’s because you are in Bayer Mode to handle that resolution. When this happens all the automatic camera controls don’t won’t and it’s just the raw bayer image from the camera. We don’t have enough RAM for VGA RGB565 from the camera ISP.