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JavaCV crashes #51

Closed GoogleCodeExporter closed 9 years ago

GoogleCodeExporter commented 9 years ago 
I get the following UnsatisfiedLinkError exception when running your demo code:

[java] Exception in thread "main" java.lang.UnsatisfiedLinkError: 
com.googlecode.javacv.cpp.opencv_core$CvScalar.allocate()V
[java]  at com.googlecode.javacv.cpp.opencv_core$CvScalar.allocate(Native 
Method)
[java]  at 
com.googlecode.javacv.cpp.opencv_core$CvScalar.<init>(opencv_core.java:2152)
[java]  at 
com.googlecode.javacv.cpp.opencv_core$CvScalar.<clinit>(opencv_core.java:2194)

I am using latest OpenCV 2.2.0

Original issue reported on code.google.com by dmitriy.kuptsov@gmail.com on 26 Feb 2011 at 3:51

GoogleCodeExporter commented 9 years ago 
I don't see "Demo" anywhere in your stack trace. If there is more to the strack 
trace, please provide it, otherwise, I cannot help you.

Original comment by samuel.a...@gmail.com on 27 Feb 2011 at 2:13

GoogleCodeExporter commented 9 years ago 
Hi,
I have a problem. I'm using Win7, JDK 6, Eclipse, OpenCV 2.2. I put : 
javacpp.jar javacv-windows-x86.jar javacv.jar and jnacv.jar to my project 
classpath. Also, OpenCV has been installed with Add to path.. option, means 
C:\OpenCV2.2\bin path is included to system path.
The code I have is 
package javacv;

import static com.googlecode.javacv.cpp.opencv_core.CV_AA;
import static com.googlecode.javacv.cpp.opencv_core.IPL_DEPTH_8U;
import static com.googlecode.javacv.cpp.opencv_core.cvGetSeqElem;
import static com.googlecode.javacv.cpp.opencv_core.cvLoad;
import static com.googlecode.javacv.cpp.opencv_core.cvPoint;
import static com.googlecode.javacv.cpp.opencv_core.cvRectangle;
import static com.googlecode.javacv.cpp.opencv_highgui.cvLoadImage;
import static com.googlecode.javacv.cpp.opencv_highgui.cvSaveImage;
import static com.googlecode.javacv.cpp.opencv_imgproc.CV_BGR2GRAY;
import static com.googlecode.javacv.cpp.opencv_imgproc.cvCvtColor;
import static com.googlecode.javacv.cpp.opencv_objdetect.cvHaarDetectObjects;

import com.googlecode.javacv.JavaCvErrorCallback;
import com.googlecode.javacv.cpp.opencv_core.CvMemStorage;
import com.googlecode.javacv.cpp.opencv_core.CvRect;
import com.googlecode.javacv.cpp.opencv_core.CvScalar;
import com.googlecode.javacv.cpp.opencv_core.CvSeq;
import com.googlecode.javacv.cpp.opencv_core.IplImage;
import com.googlecode.javacv.cpp.opencv_objdetect.CvHaarClassifierCascade;

public class FaceDetection {
    private static final String CASCADE_FILE = "C:\\OpenCV2.2\\data\\haarcascades\\haarcascade_frontalface_alt.xml";
    public static void main(String[] args) throws Exception {
        // new JavaCvErrorCallback().toString();
        IplImage originalImage = cvLoadImage("daniel1.jpg", 1);

        IplImage grayImage = IplImage.create(originalImage.width(), originalImage.height(), IPL_DEPTH_8U, 1);

        cvCvtColor(originalImage, grayImage, CV_BGR2GRAY);

        CvMemStorage storage = CvMemStorage.create();
        CvHaarClassifierCascade cascade = new CvHaarClassifierCascade(cvLoad(CASCADE_FILE));
        CvSeq faces = cvHaarDetectObjects(grayImage, cascade, storage, 1.1, 1, 0);
        for (int i = 0; i < faces.total(); i++) {
            CvRect r = new CvRect(cvGetSeqElem(faces, i));
            cvRectangle(originalImage, cvPoint(r.x(), r.y()), cvPoint(
                    r.x() + r.width(), r.y() + r.height()), CvScalar.YELLOW, 1, CV_AA,
                    0);
        }

        cvSaveImage(args[1], originalImage);
    }
}

And the exception I got is :
OpenCV Error: Unspecified error (The node does not represent a user object 
(unknown type?)) in unknown function, file 
..\..\..\..\ocv\opencv\modules\core\src\persistence.cpp, line 4811
Exception in thread "main" java.lang.RuntimeException: 
..\..\..\..\ocv\opencv\modules\core\src\persistence.cpp:4811: error: (-2) The 
node does not represent a user object (unknown type?)

    at com.googlecode.javacv.cpp.opencv_core.cvLoad(Native Method)
    at com.googlecode.javacv.cpp.opencv_core.cvLoad(opencv_core.java:3919)
    at javacv.FaceDetection.main(FaceDetection.java:49)

line 49 is : 
CvHaarClassifierCascade cascade = new 
CvHaarClassifierCascade(cvLoad(CASCADE_FILE));

I'm Java programmer, I don't have any clue about C or C++ programming.
Please, help me with this. I have to do a face recognition project.
Any idea will be helpful.
Thank you.

Original comment by darius...@googlemail.com on 27 Feb 2011 at 11:09

GoogleCodeExporter commented 9 years ago 
Hi Samuel,

Here is the stack trace:

     [java] Exception in thread "main" java.lang.UnsatisfiedLinkError: no jniCvScalar in java.library.path
     [java]     at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1734)
     [java]     at java.lang.Runtime.loadLibrary0(Runtime.java:823)
     [java]     at java.lang.System.loadLibrary(System.java:1028)
     [java]     at com.googlecode.javacpp.Loader.load(Loader.java:311)
     [java]     at com.googlecode.javacpp.Loader.load(Loader.java:258)
     [java]     at com.googlecode.javacv.cpp.opencv_core$CvScalar.<clinit>(opencv_core.java:2151)
     [java]     at java.lang.Class.forName0(Native Method)
     [java]     at java.lang.Class.forName(Class.java:169)
     [java]     at com.googlecode.javacpp.Loader.load(Loader.java:276)
     [java]     at com.googlecode.javacpp.Loader.load(Loader.java:258)
     [java]     at com.googlecode.javacv.cpp.opencv_core.<clinit>(opencv_core.java:120)
     [java]     at java.lang.Class.forName0(Native Method)
     [java]     at java.lang.Class.forName(Class.java:169)
     [java]     at com.googlecode.javacpp.Loader.load(Loader.java:276)
     [java]     at com.facebase.detector.Demo.main(Unknown Source)

Here is how I start example code.

/usr/lib/jvm/java-6-sun-1.6.0.22/jre/bin/java -classpath 
/home/dieman/workspace/facematch/faceparser/lib/javacpp.jar:/home/dieman/workspa
ce/facematch/faceparser/lib/javacv-linux-x86.jar:/home/dieman/workspace/facematc
h/faceparser/lib/javacv.jar:/home/dieman/workspace/facematch/faceparser/demo.jar
 com.detector.Demo

Here is the simplest code that produces the exception:

package com.detector;

import com.googlecode.javacv.cpp.opencv_core;
import static com.googlecode.javacv.cpp.opencv_core.*;

public class Demo {
    public static void main(String[] args) throws Exception {
        com.googlecode.javacpp.Loader.load(opencv_core.class);
    }
}

Original comment by dmitriy.kuptsov@gmail.com on 27 Feb 2011 at 12:14

GoogleCodeExporter commented 9 years ago 
Dimitry, this probably means you did not install OpenCV 2.2 correctly.. When 
you tried to install it, did you run *both* 
    make install
and 
    ldconfig
? Please read the documentation of OpenCV 2.2 to understand how to install it 
properly, thank you.

Darius, you need to add this line before cvLoad(), as clearly indicated in the 
README.txt file:
        Loader.load(opencv_objdetect.class);

Original comment by samuel.a...@gmail.com on 27 Feb 2011 at 1:02

GoogleCodeExporter commented 9 years ago 
Thank you!

Original comment by dmitriy.kuptsov@gmail.com on 27 Feb 2011 at 1:27

GoogleCodeExporter commented 9 years ago 
And JDK update 22 is kind of old.. Maybe there are bugs in there preventing 
JavaCPP from working properly. Please update to the latest version and let me 
know if this solves your issue.

Original comment by samuel.a...@gmail.com on 27 Feb 2011 at 2:16

GoogleCodeExporter commented 9 years ago 
I have update to sun-jdk-1.6.24 and also recompiled the OpenCV library (made 
make install). Still the same error:

     [java] Exception in thread "main" java.lang.UnsatisfiedLinkError: no jniCvErrorCallback in java.library.path
     [java]     at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1681)
     [java]     at java.lang.Runtime.loadLibrary0(Runtime.java:840)
     [java]     at java.lang.System.loadLibrary(System.java:1047)
     [java]     at com.googlecode.javacpp.Loader.load(Loader.java:309)
     [java]     at com.googlecode.javacpp.Loader.load(Loader.java:258)
     [java]     at com.googlecode.javacv.cpp.opencv_core$CvErrorCallback.<clinit>(opencv_core.java:3962)
     [java]     at java.lang.Class.forName0(Native Method)
     [java]     at java.lang.Class.forName(Class.java:186)
     [java]     at com.googlecode.javacpp.Loader.load(Loader.java:275)
     [java]     at com.googlecode.javacpp.Loader.load(Loader.java:258)
     [java]     at com.googlecode.javacv.cpp.opencv_core.<clinit>(opencv_core.java:120)
     [java]     at java.lang.Class.forName0(Native Method)
     [java]     at java.lang.Class.forName(Class.java:186)
     [java]     at com.googlecode.javacpp.Loader.load(Loader.java:275)
     [java]     at com.facebase.detector.Demo.main(Unknown Source)

Original comment by dmitriy.kuptsov@gmail.com on 27 Feb 2011 at 3:06

GoogleCodeExporter commented 9 years ago 
I have tried also to switch to OpenJDK. Did not help. I wonder why it tries to 
load jniCvErrorCallback as a "so" library? Compilation of javacv does not 
produce such library.

Original comment by dmitriy.kuptsov@gmail.com on 27 Feb 2011 at 3:08

GoogleCodeExporter commented 9 years ago 
I have also noticed (when debugging) that Loader tries to load native libraries 
for nested classes CvErrorCallback, CvScalar and CvSize found in opencv_core 
class:

linux-x86/libjniCvErrorCallback.so
linux-x86/libjniCvScalar.so
linux-x86/libjniCvSize.so

Should such libraries exist in com/googlecode/javacv/cpp/linux-x86 ?

If yes then javacpp does not compile them. If not then why does loader tries to 
load them anyways?

--Dmitriy

Original comment by dmitriy.kuptsov@gmail.com on 27 Feb 2011 at 10:00

GoogleCodeExporter commented 9 years ago 
No, it should not try to load them.. the only reason I can see why this is 
happening must have something to do with bugs inside your Java, some mix up in 
the files it's supposed to use, or maybe even a bad Java compiler (the 
incremental one from Eclipse, notoriously)

Original comment by samuel.a...@gmail.com on 28 Feb 2011 at 1:53

GoogleCodeExporter commented 9 years ago 
Fine, I have compiled on different machine and it worked. I wonder, what could 
be the reason?

Original comment by dmitriy.kuptsov@gmail.com on 28 Feb 2011 at 9:55

GoogleCodeExporter commented 9 years ago 
Good question, please let me know if you find out... IMO, it's probably 
something in your classpath interfering with the system class loader. You know, 
try to empty your lib/ext directory and such.

Original comment by samuel.a...@gmail.com on 28 Feb 2011 at 10:01

GoogleCodeExporter commented 9 years ago 
Hi,
 I did as you said and not I'm having other exception
The code is

public class FaceDetection {    
    private static final String CASCADE_FILE = "haarcascade_frontalface_default.xml";
    public static void main(String[] args) throws Exception {

        Loader.load(opencv_objdetect.class);

        IplImage originalImage = cvLoadImage("daniel1.jpg", 1);     

        IplImage grayImage = IplImage.create(originalImage.width(), originalImage.height(), IPL_DEPTH_8U, 1);       
        cvCvtColor(originalImage, grayImage, CV_BGR2GRAY);
        CvMemStorage storage = CvMemStorage.create();   

        // Even I put Loader.load(opencv_objdetect.class); here the exception is the same.

        CvHaarClassifierCascade cascade = new CvHaarClassifierCascade(cvLoad(CASCADE_FILE));        
        CvSeq faces = cvHaarDetectObjects(grayImage, cascade, storage, 1.1, 1, 0);
        for (int i = 0; i < faces.total(); i++) {
            CvRect r = new CvRect(cvGetSeqElem(faces, i));
            cvRectangle(originalImage, cvPoint(r.x(), r.y()), cvPoint(
                    r.x() + r.width(), r.y() + r.height()), CvScalar.YELLOW, 1, CV_AA,
                    0);
        }       
        cvSaveImage("result.jpg", originalImage);
    }
}

What I'm receiving now is :
Exception in thread "main" java.lang.UnsatisfiedLinkError: 
C:\Users\Daniel\AppData\Local\Temp\jniopencv_core4539731836344541513.dll: Can't 
find dependent libraries
    at java.lang.ClassLoader$NativeLibrary.load(Native Method)
    at java.lang.ClassLoader.loadLibrary0(Unknown Source)
    at java.lang.ClassLoader.loadLibrary(Unknown Source)
    at java.lang.Runtime.load0(Unknown Source)
    at java.lang.System.load(Unknown Source)
    at com.googlecode.javacpp.Loader.load(Loader.java:308)
    at com.googlecode.javacpp.Loader.load(Loader.java:258)
    at com.googlecode.javacv.cpp.opencv_core$CvPoint.<clinit>(opencv_core.java:1733)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Unknown Source)
    at com.googlecode.javacpp.Loader.load(Loader.java:280)
    at com.googlecode.javacpp.Loader.load(Loader.java:258)
    at com.googlecode.javacv.cpp.opencv_core$CvSize.<clinit>(opencv_core.java:2047)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Unknown Source)
    at com.googlecode.javacpp.Loader.load(Loader.java:280)
    at com.googlecode.javacpp.Loader.load(Loader.java:258)
    at com.googlecode.javacv.cpp.opencv_core$CvScalar.<clinit>(opencv_core.java:2151)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Unknown Source)
    at com.googlecode.javacpp.Loader.load(Loader.java:280)
    at com.googlecode.javacpp.Loader.load(Loader.java:258)
    at com.googlecode.javacv.cpp.opencv_core$CvErrorCallback.<clinit>(opencv_core.java:3962)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Unknown Source)
    at com.googlecode.javacpp.Loader.load(Loader.java:280)
    at com.googlecode.javacpp.Loader.load(Loader.java:258)
    at com.googlecode.javacv.cpp.opencv_core.<clinit>(opencv_core.java:120)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Unknown Source)
    at com.googlecode.javacpp.Loader.load(Loader.java:280)
    at com.googlecode.javacv.cpp.opencv_imgproc.<clinit>(opencv_imgproc.java:87)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Unknown Source)
    at com.googlecode.javacpp.Loader.load(Loader.java:280)
    at com.googlecode.javacv.cpp.opencv_highgui.<clinit>(opencv_highgui.java:88)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Unknown Source)
    at com.googlecode.javacpp.Loader.load(Loader.java:280)
    at com.googlecode.javacv.cpp.opencv_objdetect.<clinit>(opencv_objdetect.java:85)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Unknown Source)
    at com.googlecode.javacpp.Loader.load(Loader.java:280)
    at javacv.FaceDetection.main(FaceDetection.java:37)

Thank you, Samuel.

Original comment by darius...@googlemail.com on 28 Feb 2011 at 2:59

GoogleCodeExporter commented 9 years ago 
Line 37, from previous code snapshot is :
Loader.load(opencv_objdetect.class);

Original comment by darius...@googlemail.com on 28 Feb 2011 at 3:01

GoogleCodeExporter commented 9 years ago 
Hi, I have resolved the problem. It was the directory where I have installed 
OpenCV libraries/include files: change from /usr/local to /usr/ solved the 
issue. I guess these paths are hard coded in javacpp, are they?

Original comment by dmitriy.kuptsov@gmail.com on 28 Feb 2011 at 5:19

GoogleCodeExporter commented 9 years ago 
Dmitriy, as detailed in OpenCV's documentation, if you wish to install OpenCV 
in /usr/local/, you need to make sure your Linux is looking for libraries in 
/usr/local/. This is NOT enabled by default. Please read the documentation when 
someone asked you to read the documentation, thank you.

Darius, I think your installation of Java 6 or OpenCV 2.2 has changed.. What 
happens if you place Loader.load(opencv_core.class) before 
Loader.load(opencv_objdetect.class)? If you still get that error, please try to 
figure out what may have changed with your installations of Java 6 and OpenCV 
2.2

Original comment by samuel.a...@gmail.com on 1 Mar 2011 at 1:59

GoogleCodeExporter commented 9 years ago 
Hi Samuel,

dario probe code and I shot this problem

import static name.audet.samuel.javacv.jna.cxcore.*;
import static name.audet.samuel.javacv.jna.cv.*;
import static name.audet.samuel.javacv.jna.highgui.*;
import static name.audet.samuel.javacv.jna.cvaux.*;
import java.util.concurrent.TimeUnit;
import name.audet.samuel.javacv.CanvasFrame;
import name.audet.samuel.javacv.FrameGrabber;
import name.audet.samuel.javacv.JavaCvErrorCallback;
import name.audet.samuel.javacv.OpenCVFrameGrabber;

public class mainPrg
{
    public static void main(String[] args) throws Exception
    {
    new JavaCvErrorCallback().redirectError();
    IplImage imageCam = null;
    FrameGrabber ofg = new OpenCVFrameGrabber("test.avi");
    CanvasFrame window = new CanvasFrame("Video Player");

    try
    {
        ofg.start();
    } catch (Exception e)
    { e.printStackTrace(); }

    try
    {
        TimeUnit.SECONDS.sleep(1);
    } catch (InterruptedException e)
    {  e.printStackTrace(); }

    while ((imageCam = ofg.grab()) != null)
    {
        if (imageCam != null)
        window.showImage(imageCam);
        cvReleaseImage(imageCam.pointerByReference());
    }
    window.dispose();
    }
}

And the exception I got is :

OpenCV Error: Null pointer (Invalid classifier cascade) in unknown function, 
file ..\..\..\..\ocv\opencv\modules\objdetect\src\haar.cpp, line 1013
Exception in thread "main" java.lang.RuntimeException: 
..\..\..\..\ocv\opencv\modules\objdetect\src\haar.cpp:1013: error: (-27) 
Invalid classifier cascade

    at com.googlecode.javacv.cpp.opencv_objdetect.cvHaarDetectObjects(Native Method)
    at com.googlecode.javacv.cpp.opencv_objdetect.cvHaarDetectObjects(opencv_objdetect.java:226)
    at otrosUtilizanjavacv.FaceDetection.main(FaceDetection.java:67)

Please, help me with this

Original comment by mariovir...@gmail.com on 1 Mar 2011 at 12:11

GoogleCodeExporter commented 9 years ago 
I thought Darius said he figured out what was wrong with his code. Anyway, 
everything that you guys have been discussing here don't seem to be issues with 
JavaCV. If you still have problems /using/ JavaCV, please post your questions 
on the mailing list, thank you

Original comment by samuel.a...@gmail.com on 5 Mar 2011 at 2:27

GoogleCodeExporter commented 9 years ago 
java.lang.UnsatisfiedLinkError: 
C:\Users\Administrator\AppData\Local\Temp\jniopencv_core7516365096713185536.dll:
 Can't find dependent libraries
    at java.lang.ClassLoader$NativeLibrary.load(Native Method)
    at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1807)
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1703)
    at java.lang.Runtime.load0(Runtime.java:770)
    at java.lang.System.load(System.java:1003)
    at com.googlecode.javacpp.Loader.load(Loader.java:332)
    at com.googlecode.javacpp.Loader.load(Loader.java:266)
    at com.googlecode.javacv.cpp.opencv_core.<clinit>(opencv_core.java:118)
    at Main.<clinit>(Main.java:25)
Exception in thread "main"

Original comment by saileizh...@gmail.com on 24 Aug 2011 at 11:33

GoogleCodeExporter commented 9 years ago 
FYI: 
Common issues with OpenCV under Windows 7 
http://code.google.com/p/javacv/wiki/Windows7AndOpenCV

Original comment by samuel.a...@gmail.com on 27 Aug 2011 at 7:55