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wb666greene / AI-Person-Detector

Python Ai "person detector" using Coral TPU or Movidius NCS/NCS2
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Jetson Nano #11

Open PBXForums opened 2 years ago

PBXForums commented 2 years ago

I see mentioned here that the Jetson Nano is a good solution.

I have a Jetson Nano and a Coral TPU.

I have been unable, so far to get A version of opencv running that doesn't return an error when I try and open an RTSP stream.

Does anyone have a solution please.

TIA Daz

wb666greene commented 2 years ago

I've used OpenCV 4.1.2 and got ~15.8 fps for 4 UHD h.264 cameras, each at 4 fps and got ~7.6 fps when the cameras were changed to h.265. Seems h.265 needs more work decoding and the latency seems longer too.

With OpenCV 3.3.1 I got essentially the same results with h.264 & h.265 UHD streams and got ~30 fps with 8 HD (1080p) h.265 4 fps cameras.

The OpenCV 4.4.1 that came with Jetpack 441 was maybe a little better with h.265 UHD streams and a little worse with h.264 streams.

So what OpenCV are you trying? If you can install Ubuntu 20.04, the OpenCV in the repos works very well.

PBXForums commented 2 years ago

Thanks, I didn't try ubuntu yet, I'm not there right now to check but the camera is definitely H265, I'll have a play around and test, I just installed the image supplied at the Jetson download site. I'll try others now and let you know how I get on.