OpenCV to JNI how to make it work?

Question

I am tring to use opencv and java for face detection, and in that pursit i found this \"JNI2OPENCV\" file....but i am confused on how to make it work, can anyone help me?

Answer 1

I have created a working Android example using OpenCV 2.3.1 and Eclipse instead of Netbeans.

This small tutorial describes a robot following torchlight. The page contains the necessary steps and the source code as well.

Answer 2

You should take a look here, a few of the examples are hooked up with JNI:

http://code.google.com/p/android-opencv/

Answer 3

If you are using JNI on Windows, Dependency Walker is going to be your friend.

But, before we get to that first verify that the JRE can find your JNIOpenCV.dll by adding: System.out.println("java.library.path="+System.getProperty("java.library.path")); to the static constructor block.

However, I think the issue here isn't finding your JNIOpenCV.dll file, but a file that it depends on. Open your .dll in dependency walker (just drag it in there) and look out for any error messages (except msjava.dll - ignore that, it doesn't matter). Most likely my hunch is that you need the Microsoft Visual C/C++ runtime libraries, download them from the Visual Studio website and put them in the same folder as your dll.

Best of luck!