exception " cannot find dependent library" using javacv - eclipse

Question

I tried implementing a program in eclipse using JavaCV. Here is the sample code,
import static com.googlecode.javacv.cpp.opencv_core.*;
import static com.googlecode.javacv.cpp.opencv_imgproc.*;
import static com.googlecode.javacv.cpp.opencv_highgui.*;
public class JavaCVProj01
{
/**
* #param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
IplImage img = cvLoadImage("Paris.jpeg");
cvShowImage("Paris",img);
cvSmooth(img,img,CV_GAUSSIAN,13);
cvShowImage("BlurImage",img);
cvWaitKey();
cvReleaseImage(img);
}
}
When I run the program I get an exception
Exception in thread "main" java.lang.UnsatisfiedLinkError: C:\Users\Bhavana\AppData\Local\Temp\javacpp34629596157210\jniopencv_core.dll: Can't find dependent libraries
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(Unknown Source)
at java.lang.ClassLoader.loadLibrary(Unknown Source)
at java.lang.Runtime.load0(Unknown Source)
at java.lang.System.load(Unknown Source)
at com.googlecode.javacpp.Loader.loadLibrary(Loader.java:566)
at com.googlecode.javacpp.Loader.load(Loader.java:489)
at com.googlecode.javacpp.Loader.load(Loader.java:431)
at com.googlecode.javacv.cpp.opencv_core.<clinit>(opencv_core.java:136)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at com.googlecode.javacpp.Loader.load(Loader.java:453)
at com.googlecode.javacv.cpp.opencv_imgproc.<clinit>(opencv_imgproc.java:97)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at com.googlecode.javacpp.Loader.load(Loader.java:453)
at com.googlecode.javacv.cpp.opencv_highgui.<clinit>(opencv_highgui.java:85)
at demo.main(demo.java:13)
Caused by: java.lang.UnsatisfiedLinkError: no opencv_core244 in java.library.path
at java.lang.ClassLoader.loadLibrary(Unknown Source)
at java.lang.Runtime.loadLibrary0(Unknown Source)
at java.lang.System.loadLibrary(Unknown Source)
at com.googlecode.javacpp.Loader.loadLibrary(Loader.java:593)
at com.googlecode.javacpp.Loader.load(Loader.java:481)
... 11 more
I have given right path for the environment variables also.
And I aslo added external Jar files from javacv-bin.
The paths i gave were
CLASSPATH
D:\opencv\build\x86\vc10\lib
D:\opencv\build\common\tbb\ia32\vc10
D:\opencv\build\x86\vc10\staticlib
PATH
D:\opencv\build\common\tbb\ia32\vc10
D:\opencv\build\x86\vc10\bin
What do I do?What are those dependent libraries I still got to add?

Answer 1

Just copying the opencv directory to C:\ drive should solve this. That is probably the easiest way out compared to setting all the paths right. This is mentioned somewhere in the JavaCV documentation (can't find it now).

Answer 2

These errors happen if the version of your OpenCV is not compatible with JavaCV-Bin.
For example:
OpenCV 2.4.0 and JAVA-BIN 0.2 = not compatible
OpenCV 2.4.3 and JAVA-BIN 0.3 = compatible
Make sure you restart after installation

Answer 3

your PATH should NOT look like this:
D:\opencv\build\common\tbb\ia32\vc10 D:\opencv\build\x86\vc10\bin
but like this:
"D:\opencv\build\common\tbb\ia32\vc10";"D:\opencv\build\x86\vc10\bin"
(note the semicolon instead of the blanks)
same applies to the CLASSPATH !

Answer 4

Almost the same question I answered.
You should add path to opencv_java244.dll to %PATH% environment variable.