webrtchacks/aiy_vision_web_server

Show camera feed and annotations of the AIY Vision Kit in a webpage

aiy_vision_web_server's Issues

UV4L Raspidisp screen is garbled

This appears to have happened after the June 25 UV4L update.

@julianoes and @siyer7881 reported this in #3 on the Pi Zero. It is happening for me on the Pi3.

I believe there might have been something in the June 25th update of UV4L causing this. I asked the UV4L author to take a look.

ImportError: No module named ‘aiy.vision.leds’

Hi,

I’m running into an error when trying to run the server.py script:

(env) pi@raspberrypi:~/AIY-projects-python $ sudo ../../../../env/bin/python3 server.py

Traceback (most recent call last):
File “server.py”, line 15, in
from aiy.vision.leds import Leds
ImportError: No module named ‘aiy.vision.leds’

It’s not able to find this module. Is there an install step I’m missing somewhere?

Thanks
Rachel

Annotation lag

First up, thanks a lot for the tutorial and code repo! That's very nice to get you me started.

I tried out the face example and it works correctly for a few seconds. Then the stream seems to lag behind the annotations. Basically, the annotations keep up with realtime but the stream is too slow and eventually freezes.

When I try to exit server.py it gets stuck at exiting....
When I hit Ctrl+C again, I get:

^Cexiting...
^CException ignored in: <module 'threading' from '/usr/lib/python3.5/threading.py'>
Traceback (most recent call last):
  File "/usr/lib/python3.5/threading.py", line 1288, in _shutdown
    t.join()
  File "/usr/lib/python3.5/threading.py", line 1054, in join
    self._wait_for_tstate_lock()
  File "/usr/lib/python3.5/threading.py", line 1070, in _wait_for_tstate_lock
    elif lock.acquire(block, timeout):
KeyboardInterrupt

After that, uv4l is still running, so I can't restart the server:

ps aux | grep uv4l
root       227 51.0 54.9 215872 208140 ?       SLsl 07:56   3:53 /usr/bin/uv4l -f -k --sched-fifo --mem-lock --config-file=/etc/uv4l/uv4l-raspidisp.conf --driver raspidisp --driver-config-file=/etc/uv4l/uv4l-raspidisp.conf --server-option=--editable-config-file=/etc/uv4l/uv4l-raspidisp.conf
root       233  0.1  2.2 101636  8432 ?        Ssl  07:56   0:00 /usr/bin/uv4l -f -k --sched-fifo --mem-lock --config-file=/etc/uv4l/uv4l-raspicam.conf --driver raspicam --driver-config-file=/etc/uv4l/uv4l-raspicam.conf --server-option=--editable-config-file=/etc/uv4l/uv4l-raspicam.conf
root       317  0.0  0.5   4416  2168 ?        Ss   07:56   0:00 /usr/bin/raspidisp_server /tmp/uv4l-raspidisp.socket
pi        1438  0.0  0.8   6568  3376 pts/0    S+   08:03   0:00 grep --color=auto uv4l

I also tried to start the server with --framerate 5 but it behaved in the same way.
Note that I have recently done a sudo apt-get dist-upgrade.

Let me know if there is something I should try out, or you need additional info.

http://raspberrypi.local:5000/ just shows white screen

I was following instructions and everything seemed to work except when I try to check video stream from browser there is nothing on it.

I can see what the camera is seeing from a monitor directly connected to the pi. When I ssh into pi I can see aiy detection output.

I want to be able to see the video stream from a web browser remotely. Am I missing some configuration?

uv4l-raspidisp.socket file ownership

Note from the UV4L author, Luca Risolia on uv4l-raspidisp.socket file ownership:

With regard to /tmp/uv4l-raspidisp.socket having root as owner, this
file is created by a program called raspidisp_server installed with the
uv4l-raspidisp-extras package. This program is automatically started by
the raspidisp_server.service, which is present in the same package, at
boot and runs in background as root.

raspidisp_server is a virtual keyboard: it open and listens to the
socket for a sequence of characters and emulates the corresponding key
strokes as if there were a real keyboard attached to the Rpi. For
example, by using the UV4L demo page with data channels enabled, if you
type 'a', 'b', 'c' there, then, assuming you have a terminal window open
on the rpi, you should see 'abc' appearing in it. It's useful for
controlling the rpi from a web page with the PC keyboard.

This video should make it clear:

https://www.youtube.com/watch?v=wthS8TPk2DE

For your purposes, I think it's enough to disable the systemd service
once for all (and reboot to get rid of any possible pending socket file
under /tmp/).

./uv4l-socket.sh: Permission denied

I'm following all the steps presented in the readme file and when I executed this command step 7 sudo python3 setup.py install I'm getting this:

Using /usr/lib/python3/dist-packages
Finished processing dependencies for aiy-vision-web-server==0.1
Disabling uv4l-raspidisp keyboard to socket and releasing /tmp/uv4l-raspidisp.socket
/bin/sh: 1: ./uv4l-socket.sh: Permission denied

Then in step 9, I executed sudo python3 server.py and I got the http://raspberrypi.local:5000.

socket waiting for connection...
 * Running on http://0.0.0.0:5000/ (Press CTRL+C to quit)
face model loaded

There I'm replacing the 0.0.0.0:5000 with my local raspberry pi IP and I'm not getting any image from my AIY but in the terminal is showing me when it recognizes my face.

What am I missing?

Thank you!

Error message

I tried running python3 server.py but I get this error message:

Traceback (most recent call last):
File "server.py", line 26, in
from aiy.leds import Leds
ImportError: No module named 'aiy.leds'