JavaCV giving java.lang.UnsatisfiedLinkError

Alright, you may say "use google search for this, there are millions of them". However, I almost spent all day just to run following code but every since I tried I got java.lang.UnsatisfiedLinkError: C:\Users\hp\AppData\Local\Temp\jniopencv_core2477828805078034839.dll: Can't find dependent libraries error which drives me mad.

I found javacv-bin folder which includes javacpp.jar, javacv.jar, javacv-windows-x86.jar, javacv-windows-x86_64.jar.

In Netbeans, I opened project properties and I added them into the libraries

I found 开发者_如何学PythonOpenCV2.3 folder, copied and pasted it into C:\ directory.

I added C:\OpenCV2.3\build\bin; C:\OpenCV2.3\build\x86\vc10\bin; C:\OpenCV2.3\build\x64\vc10\bin; in the PATH.

And I believe nothing to do left. However, every since I tried I got the same error. I'm exhausted please someone help me.

And last to say, I have both 32-bit and 64-bit JDKs so I tried both compilers but it's no use.

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 Smoother {
    public static void main(String[] args) {
        smooth("filename0.png");
    }
    public static void smooth(String filename) {
        System.out.println("java.library.path="+System.getProperty("java.library.path"));
        IplImage image = cvLoadImage(filename);
        if (image != null) {
            cvSmooth(image, image, CV_GAUSSIAN, 3);
            cvSaveImage(filename, image);
            cvReleaseImage(image);
        }
    }
}

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I had the same problem as you did. Assuming your openCV folder location is C:\OpenCV2.3, here is what to do.

1. Create path and classpath variables under both user AND system environment variables.

2. Append this to all four variables(Assuming you have the latest version of openCV2.3): C:\OpenCV2.3\build\bin;C:\OpenCV2.3\build\x64\mingw\bin;C:\OpenCV2.3\build\x64\vc9\bin;C:\OpenCV2.3\build\x64\vc10\bin;C:\OpenCV2.3\build\x86\mingw\bin;C:\OpenCV2.3\build\x86\vc9\bin;C:\OpenCV2.3\build\x86\vc10\bin;

Hope it helps! Aravind

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Two Tips:

• You can't mix 64 and x86 libraries in the pathes!
• restart Eclipse

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I have never worked with OpenCV ,but somehow I made my JNI code work.Have you generated the .dll or it comes with the package? And check this post ,it may Ohelp JNI error while calling a C subroutine ... One more suggestion try putting your dll in system32 folder and then load it manually using System.load(path/to/dll) method...Happy coding

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If anybody have this problem and updating system path and class path didn't solve, rename your OpenCv2.3.1 directory to "opencv". It did solve my problem.