thank’s a lot guys for your reply.
so i understand that the reaction time will not be proportionnal to the FPS of the camera.
then no chance to go under 1ms of reaction time, even with a faster camera and a a powerfull SBC.
even with a camera that give me 100 frames/sec, i will not acheive that reaction time i need.
as i have no experience with openCV, i asked before trying any POC !