Cannot get javacv to run

[Boche]

Hi .am pretty new to jni though am conversant with java. Am trying to
run a javacv program
and I have installed opencv2.2. I get the following error on my
netbeans console

.Exception in thread "main" java.lang.UnsatisfiedLinkError: C:\Users
\boche\AppData\Local\Temp\jniopencv_core742936603062725048.dll: Can't
find dependent libraries
at java.lang.ClassLoader$NativeLibrary.load(Native Method)

Am guessing the problem is the following code is with the following
imports
import static com.googlecode.javacv.cpp.opencv_core.*;
import static com.googlecode.javacv.cpp.opencv_imgproc.*;
import static com.googlecode.javacv.cpp.opencv_objdetect.*;


I have been researching and it seems the new javacv moved from using
jna.
The issue seems to be with the jni .Any help would be appreciated

[Samuel Audet]

On 2011-07-11 05:44, Boche wrote:
> Hi .am pretty new to jni though am conversant with java. Am trying to
> run a javacv program
> and I have installed opencv2.2. I get the following error on my
> netbeans console

If your README.txt file says "OpenCV 2.3.0", you need to install OpenCV
2.3.0, not 2.2.0

Samuel

[Boche]

Thanks for the reply. I was actually asking how to setup jni to use
in javacv .
I have been able to set up javacv in ubuntu 10.04 ok pointing to the
jni folder
in /usr directory from Netbeans run configuration .I have never
really developed
using Windows,maybe that is the source of my problems.

Again any help would be really appreciated

[Samuel Audet]

http://code.google.com/p/javacv/wiki/Windows7AndOpenCV

[Bob Chege]

I have installed the Microsoft Visual C++ 2010 Redistributable Package but no change .
I had earlier suspected that I was lacking a compiler so I installed Borland
>There is still no change and I run the error .

Heres the full stack trace.:

Exception in thread "main" java.lang.UnsatisfiedLinkError: no jniopencv_core in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1734)
    at java.lang.Runtime.loadLibrary0(Runtime.java:823)
    at java.lang.System.loadLibrary(System.java:1028)
    at com.googlecode.javacpp.Loader.load(Loader.java:343)
    at com.googlecode.javacpp.Loader.load(Loader.java:271)
    at com.googlecode.javacv.cpp.opencv_core.<clinit>(opencv_core.java:125)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:169)
    at com.googlecode.javacpp.Loader.load(Loader.java:291)
    at com.googlecode.javacv.cpp.opencv_imgproc.<clinit>(opencv_imgproc.java:93)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:169)
    at com.googlecode.javacpp.Loader.load(Loader.java:291)
    at com.googlecode.javacv.cpp.opencv_highgui.<clinit>(opencv_highgui.java:88)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:169)
    at com.googlecode.javacpp.Loader.load(Loader.java:291)
    at com.googlecode.javacv.cpp.opencv_objdetect.<clinit>(opencv_objdetect.java:90)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:169)
    at com.googlecode.javacpp.Loader.load(Loader.java:291)
    at FaceRecogPanel.initOpenCV(FaceRecogPanel.java:143)
    at FaceRecogPanel.<init>(FaceRecogPanel.java:130)
    at FaceRecognizer.<init>(FaceRecognizer.java:35)
    at FaceRecognizer.main(FaceRecognizer.java:95)


Looks to me like a jni Issue. I just need to know if that is the case .About the Systempaths I did
configure them and even linked the javacv and javacpp files to *.dll

 in opencv bin directory. Nothing has changed

[Samuel Audet]

On 2011-07-11 22:18, Bob Chege wrote:
> I have installed the Microsoft Visual C++ 2010 Redistributable Package
> but no change .
> I had earlier suspected that I was lacking a compiler so I installed
> Borland
> >There is still no change and I run the error .
>
> Heres the full stack trace.:
>
> Exception in thread "main" java.lang.UnsatisfiedLinkError: no
> jniopencv_core in java.library.path

That's a different error than the one you posted earlier. This one means
you haven't added all the JAR files in your classpath, as indicated in
the README.txt file

Samuel

[Bob Chege]

I had already  added javacv and javacpp jars to the path and the error
occurred then as it is now. But I noticed that in the javacpp jar file the class opencv_core
does exist but not the jni version i.e jniopencv_core.

The error is the same as I had earlier posted only I have included the whole
stack trace now

[Acc]

I have exactly the same problem in (attempt of) running my JavaCV. Any
help would be greatly appreciated. Similarly as Boche, I have also
installed Microsoft Visual C++ 2010 Redistributable and also made
those crucial jars as a system path, nonetheless those exemplary
programs (like MotonDetector.java) always attempt to access C:\Users
\...\AppData\Local\Temp folder which results in immediate crash.

[Samuel Audet]

On 2011-07-14 03:19, Acc wrote:
> I have exactly the same problem in (attempt of) running my JavaCV. Any
> help would be greatly appreciated. Similarly as Boche, I have also
> installed Microsoft Visual C++ 2010 Redistributable and also made
> those crucial jars as a system path, nonetheless those exemplary
> programs (like MotonDetector.java) always attempt to access C:\Users
> \...\AppData\Local\Temp folder which results in immediate crash.

I may be able to help if you explain more precisely what you tried to do
exactly...

Samuel

[Acc]

Ok, issue solved, in those times of mutli-purpose installers Microsoft
Visual C++ 2010 Redistributable Package automatically installed x64
version on my system while i required x86 one.

Therefore to everyone who faces any issues: Remember to triple-check
everything + stick to instructions step by step and everything will
work.