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Unread 17-03-2016, 14:13
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RobotPy Guy
AKA: Dustin Spicuzza
FRC #1418 (), FRC #1973, FRC #4796, FRC #6367 ()
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Join Date: Dec 2008
Rookie Year: 2003
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Re: USB MS Lifecam HD 3000 Exposure Issues

Quote:
Originally Posted by Cinnamon Toast View Post
I've been having the same problem with some vision I've been running with open cv. Is it possible to integrate that command into the camera capture object? If I could do this in the initiation of my code that would be great. If possible how so?
Depends on your language, there are multiple ways to run external processes in each language. In python it would be something like:

Code:
import os
...
os.system('v4l2-ctl ... ')
And in C++ it'll probably be something like:

Code:
#include <stdlib.h>
...

system("v4l2-ctl ...");
And in java it'll be something like this:

Code:
Runtime.getRuntime().exec("v4l2-ctl ...");
Obviously, you will want to do error checking, and some languages provide better ways of doing this as well.
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Maintainer of RobotPy - Python for FRC
Creator of pyfrc (Robot Simulator + utilities for Python) and pynetworktables/pynetworktables2js (NetworkTables for Python & Javascript)

2017 Season: Teams #1973, #4796, #6369
Team #1418 (remote mentor): Newton Quarterfinalists, 2016 Chesapeake District Champion, 2x Innovation in Control award, 2x district event winner
Team #1418: 2015 DC Regional Innovation In Control Award, #2 seed; 2014 VA Industrial Design Award; 2014 Finalists in DC & VA
Team #2423: 2012 & 2013 Boston Regional Innovation in Control Award


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