I need to build standalone module which records video from rasberry pi camera to sd card (through external module) when the motion on video is detected.
So, I need to run OpenCV that I will use for motion detection. Is it possible to run it on Raspberry Pi Pico on board? How much FPS will it have in case for i.e. background subtraction?
You could instead use an esp32 which has 520kb of memory and van handle up to 1024 x768 (https://github.com/joachimBurket/esp32-opencv) or even use the new esp32-s3, a successor, with 8mb ram.