Hey,
I am using Arduino Nicla Vision Board. The board when attached to OpenMV IDE takes about 46 milliseconds(around FPS of 21) to capture one image with a resolution of QVGA with default setting related to the sensor(autoexposure, shutter speed). So,
Is there a way to speed this up?
Is there any other method apart from sensor.snapshot() using which we can capture images?
Update:
I tried setting the auto-exposure off and tried using IOCTL, but it gives a runtime error stating that the requested operation is not supported by the camera sensor. Can these operations be supported somehow?
We just haven’t optimized that camera sensor driver yet. It’s a todo item. If you want you can manually do register reads/writes in the mean-time to speed it up. The datasheet however for it is very basic and doesn’t have much info.
@kwagyeman could you please explain how to proceed with doing register read/ write manually? Or if possible could I be involved in optimizing the sensor driver in some way? I will be really enthusiastic about trying that out!
Hi, this is the best I could do with the available datasheet for this sensor, the missing controls will likely never be implemented. If you reduce the resolution to QQVGA it will use a smaller readout window and you’ll get a faster FPS. Also you can write regs with sensor.__write_reg(addr, value) and read with sensor.__read_reg(addr).
I’d also be interested in some low level access to the Nicla Vision camera. I have an application that requires an image read every 3.3ms at a minimum. Don’t know if that’s going to be possible.