topic Stream infer performance in Intel® Distribution of OpenVINO™ Toolkit

Stream infer performance

idata — Sat, 19 Aug 2017 14:55:50 GMT

After loading the sdk and running all examples I tried stream infer which was only able to identify a keyboard . It saw my head as a shower cap , a pen a a syringe , my finger as a nipple , and a screwdriver as a wing with my iPhone detected as a mirror .

Is this a fair reflection on the state of CNN' s and machine learning or have I missed something ?.

Re: Stream infer performance

idata — Sun, 20 Aug 2017 00:43:34 GMT

Hi @hedley,

Thanks for the information. I think I've fixed a few issues with stream_infer.py. Can you try this version of and let me know if it performs any better for you?

https://ncs-forum-uploads.s3.amazonaws.com/neal/stream_infer.py

Thanks,

Neal

Re: Stream infer performance

idata — Sun, 20 Aug 2017 22:27:38 GMT

This new version of stream_infer does not work for me on RaspberryPi. It gives a black screen. The version in NCS_API_1.07.07.pdf shows video and inferencing results.

Re: Stream infer performance

idata — Mon, 21 Aug 2017 03:05:05 GMT

@wouterd Did you try changing the sink name for the Raspberry Pi? Refer to #7 of the API release notes: https://ncs-forum-uploads.s3.amazonaws.com/ncsdk/MvNC_SDK_01_07_07/MvNC_SDK_1.07.07_ReleaseNotes.txt

Re: Stream infer performance

idata — Mon, 21 Aug 2017 14:12:03 GMT

Yes, I did change the sink name. With a USB webcam both scripts work. With the Pi Camera I can get the original script to work when loading v4l2

sudo modprobe bcm2835-v4l2

The newer script does not work though (video screen comes up but does not show anything).

Re: Stream infer performance

idata — Wed, 23 Aug 2017 23:39:54 GMT

@wouterd Thanks for letting us know about that issue. The program stream_infer.py was written to work with USB cameras and I'm sorry to hear that it isn't working with your Pi camera. We are looking into enabling/adding an example to work the Pi Camera soon so stay tuned.

Re: Stream infer performance

idata — Fri, 08 Sep 2017 04:16:24 GMT

Same issue here. Old script works with Pi Cam via wouterd's (+1) fix (sudo modprobe bcm2835-v4l2), however new script fails with same symptom (screen comes up without stream).

Re: Stream infer performance

idata — Mon, 17 Sep 2018 21:22:16 GMT

Please refer to this issue: https://ncsforum.movidius.com/discussion/484/hang-with-a-blank-window-in-stream-infer-py

use: SINK_NAME="ximagesink" # use for Raspian Jessie platforms to avoid black screen