Pi3 v Pi4 on ImageZMQ, delays over network vs on-board
A demo comparison running identical ImageZMQ scripts on a Pi3 receiving locally-generated images (same Pi as connected to camera, broadcasting PUB/SUB mode, received PUB/SUB and displayed with OpenCV imshow(). Another Pi4 (4 gig) receiving the broadcast image stream over the network, and a Pi 3B+ receiving the image stream over the network. Results show that (unsurprisingly) the image receive/display script is showing the received video MUCH faster when the generation and display are happening on the SAME Pi. Both the Pi 3B+ and the Pi 4 (4 Gig) exhibit significant delays when compared to the on-board setup. I am interested in determining next if a hard-wired (cat-5) connection increases speed in the out-boarded scripts. I also have a Google Coral accelerator, not sure if I can employ that to good end in the effort to speed up image handling... stay tuned for more exciting adventures. And my cat :) Thanks again Jeff Bass for watching and thoughts/direction.