Outline of software flow:

We will capture from camera for 20s after PIR motion was true (at one image per second). Then stop capture, and pass the detection images to the object detector. It's not going to be very fast for the object detector to decide! It could easily take 30s to decide to each image, that means 20 images * 30s which equals 600s! Yeah, that's 10 mins - so this is something I'm a bit worried about. Actually, an i5 6xx w 2 cores took around 10s to decide..