[JdeRobot] Cameraserver

[Oscar Garcia]

El 23/03/15 a las 18:53, Sahil Shah escribió:
> I had successfully compiled the full software on my Virtual Machine. 
> When trying to run the cameraserver on the virtual machine, I am 
> having a problem.
> Shell log -
> ~/JdeRobot/src/stable/components/cameraserver$ ./cameraserver 
> --Ice.Config=cameraserver.cfg
> Constructor CameraI -> CameraSrv.Camera.0.
> URI: 0


That string is outputted to stdout in line 94[1]. This will call 
OpenCV's VideoCapture "open" method with a argument converted from 
string "0" (with atoi) at line 99.


> VIDIOC_QUERYMENU: Invalid argument
> VIDIOC_QUERYMENU: Invalid argument
> VIDIOC_QUERYMENU: Invalid argument


That is a problem, probably caused by opencv opening the webcam, or less 
probable line 220 (setting CV_CAP_PROP_POS_AVI_RATIO parameter).


> safeThread


Generated at line 185. ReplyTask thread was created (from line 102). 
Your adapter is now ready to serve images from opencv's camera "0" 
(default camera).


> 33


This is generated in line 206 and is the 1000/30 framerate control 
(FramerateN).


> select timeout
> select timeout
> select timeout
> select timeout
>
> and it keeps on showing the Select timeout after a particular 
> interval. I can see a light near my webcam glowing indicating its 
> working but i cant see the GUI.


Don't worry about this messages. The adapter is ready to serve frames 
from your camera, but you will need a client/consumer (like cameraview) 
that connect to your adapter and ask for every frame for render it in a GUI.

Remember, this is a headless (guiless) program, like a daemon.

Take a look to this video:
https://www.youtube.com/watch?v=_d_8pzFQOZ4

Mobile is running an android version of cameraserver and laptop is 
running cameraview, that is the one that shows the images fetched from 
the mobile's camera.

Good luck!


[1]: 
https://github.com/RoboticsURJC/JdeRobot/blob/master/src/stable/components/cameraserver/cameraserver.cpp#L94
------------ próxima parte ------------
Se ha borrado un adjunto en formato HTML...
URL: http://gsyc.escet.urjc.es/pipermail/jde-developers/attachments/20150323/7ad96a2c/attachment-0001.htm 
------------ próxima parte ------------
Se ha borrado un mensaje que no est? en formato texto plano...
Nombre     : smime.p7s
Tipo       : application/pkcs7-signature
Tama?o     : 2245 bytes
Descripci?n: Firma criptogr??fica S/MIME
Url        : http://gsyc.escet.urjc.es/pipermail/jde-developers/attachments/20150323/7ad96a2c/attachment-0001.bin