Tensorflow on edge, or – Building a “smart” security camera with a Raspberry Pi • Hacker News Board

Re: Tensorflow on edge, or – Building a “smart” security camera with a Raspberry Pi

#81

Post by stallmanite » Mon, Jun 22, 2020, 10:05 PM UTC

bufferoverflow wrote: post #37

staycoolboy wrote: post #18

I've done this with a Jetson Xavier, 4 CCTV cameras and a PoE hub. You really want to use DeepStream and C/C++ for inference, not Python and TensorFlow. I'm streaming ~20 fps (17 to 30) 720P directly from my home IP4 address, and when a person is in-frame long enough and caught by the tracker, a stream goes to an AWS endpoint for storage. I've experimented with both SSDMobileNet and Yolo3, which are both pretty error…

I think I was able to run Yolo 3 on my shitty $99 smartphone a while ago. Did it for human detection. Don't remember the FPS, but it wasn't 0.1, it was much better than that. The beauty of a smartphone is it's all in one small package, and it has everything - the CPU/GPU + camera + 4G/3G + wifi, plus you can trivially hook it up to a huge USB powerbank. They even have weatherproofed ones. RPi will cost you more with…

I’m really interested in this, do you have anything written about how you did it?

Re: Tensorflow on edge, or – Building a “smart” security camera with a Raspberry Pi

#82

Post by scottlamb » Tue, Jun 23, 2020, 4:20 AM UTC

nl wrote: post #77

scottlamb wrote: post #54

Earlier quoted context omitted.

Yeah, that's promising, although I don't think there's much hope of support if it doesn't work as promised. And I have doubts about the software quality. As a small example: if you follow Gyrfalcon's installation instructions for the basic Plai Builder, it sets up a udev rule that makes every SCSI device world-writeable. I realized that by accident later. And of course everything is closed-source. Gyrfalcon's own sit…

This is sadly typical, and while I understand they don't want the support burden of hobbyists I would have thought the OrangePI would ship in interesting enough numbers for there to be some kind of support. It looks like the OrangePi 4B includes ones of these chips on board?

> It looks like the OrangePi 4B includes ones of these chips on board?

Yes, it has a 2801S.

And the SolidRun Hummingboard Ripple has a 2803S. Seems a little pricy compared to a Raspberry Pi 4 + USB PLAI Plug 2803, but maybe worth it if you can actually get the software...(and I don't think they just give you one download that supports both models)

Re: Tensorflow on edge, or – Building a “smart” security camera with a Raspberry Pi

#83

Post by otter-in-a-suit » Wed, Jun 24, 2020, 9:32 PM UTC

theblackcat2004 wrote: post #3

Since you already using openCV, you can write a neat motion detection and only start sending frames for detection when motions are detected

Just saw this thread (I'm the author) - great idea, thank you!