OpenCV for RoboRio - Release

[Ben Wolsieffer]

I just tried this out today using the Java libraries and I got it to work.

After installing OpenCV to the roboRIO via the instructions on GitHub, I had to do some more work to make it work in Java.

First I had to add:

<var name="classpath" value="${classpath}:/path/to/opencv-2410.jar" />

to the end of the build.xml in the robot code Eclipse project (add it just before the closing </project> tag). This includes the OpenCV classes in the jar file that is uploaded to the roboRIO.

To load the native library in the robot code I had to add this line:

System.load("/usr/local/lib/lib_OpenCV/java/opencv_java2410.so");

Put this somewhere where it will get executed before any OpenCV code (ie. static initializer). The path will obviously be different if you installed OpenCV somewhere else on the roboRIO.

I was able to capture and stream an image from the Microsoft Lifecam HD3000, but it is at a very low resolution and I can't seem to change it. The same code works fine in Linux on my laptop. I'll see if I can figure more out tomorrow.