Comments (16)
I forgot the OpenCV version : 2.1.0 (official version, NOT from SVN)
For Java I use Eclipse JDT (downloaded yesterday)
To compile the OpenCV examples, there is a script "build_all.sh" that does the
job.
Original comment by [email protected]
on 14 Sep 2010 at 3:42
from javacv.
Last detail (sorry, can't find how to edit the issue), I noticed that the
Webcam light would turn on in the "64 bits" scenario, when lauching your test
class. I think it is close to working, but I can't understand why OpenCV
examples won't work (and why I have this error).
Note that I have no special webcam, just the one above the screen in the
macbook.
I also didn't install any of the "optionnal" librairies :
* libdc1394 2.1.2 (Linux and Mac OS X) http://sourceforge.net/projects/libdc1394/files/
* PGR FlyCapture 1 or 2 (Windows only) http://www.ptgrey.com/products/pgrflycapture/
* ARToolKitPlus 2.1.1c http://code.google.com/p/javacv/downloads/list
* FFmpeg-Java http://code.google.com/p/javacv/downloads/list
* which needs FFmpeg 0.6 or more recent:
o Source code http://ffmpeg.org/download.html
o Precompiled Windows DLLs http://ffmpeg.arrozcru.org/autobuilds/
Original comment by [email protected]
on 14 Sep 2010 at 3:45
from javacv.
If your camera does not work with OpenCV, then it does not work with OpenCV..
Can you confirm it doesn't outside of JavaCV as well?
Original comment by [email protected]
on 14 Sep 2010 at 5:11
from javacv.
Hi,
I have a PGR Dragon fly 2, The camera is fully functional as can be demostrated
by using flycap 1.8 and 2.0
When selecting any of the frame grabbers even the PGRFrameCapture, the
following error is given. (this error is when PGRFrameCapture is selected)
Sep 14, 2010 8:44:45 PM name.audet.samuel.procamcalib.CalibrationWorker
doInBackground
SEVERE: Could not perform calibration
java.lang.UnsatisfiedLinkError: Unable to load library 'FlyCapture2': The
specified module could not be found.
at com.sun.jna.NativeLibrary.loadLibrary(NativeLibrary.java:164)
at com.sun.jna.NativeLibrary.getInstance(NativeLibrary.java:237)
at com.sun.jna.NativeLibrary.getInstance(NativeLibrary.java:200)
at name.audet.samuel.javacv.jna.Loader.load(Loader.java:44)
at name.audet.samuel.javacv.jna.PGRFlyCapture.<clinit>(PGRFlyCapture.java:83)
at name.audet.samuel.javacv.FlyCaptureFrameGrabber.tryLoad(FlyCaptureFrameGrabber.java:78)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at name.audet.samuel.javacv.FrameGrabber.init(FrameGrabber.java:47)
at name.audet.samuel.procamcalib.MainFrame.main(MainFrame.java:1271)
Is seems that there is a unexplained link error when getting the library. I
also add the specific path that point directly to the files in the folder. The
files are there but it still gives the error. Do you know of any possible
causes or possible solutions.
Kind Regards,
A.
Original comment by [email protected]
on 14 Sep 2010 at 6:49
from javacv.
Ps. I have all 32-bit software now.
Original comment by [email protected]
on 14 Sep 2010 at 6:49
from javacv.
@samuel : No no no I wrote : "compiling the c examples works, and they work
properly"
So OpenCV works with my webcam, wich is the one included in my macbook BTW.
So no problem on this side I guess.
Original comment by [email protected]
on 14 Sep 2010 at 8:03
from javacv.
Have you tried to recompile without SSE instructions? In both 32-bit and
64-bit? Some have also reported that their cameras worked in the "client"
version of the JVM, but not the "server" one.. In any case, it's either the SSE
problem, or it's something that Java does that your hardware does not like, and
hardware may like better the "client" one.. But it's not a problem with JavaCV
itself..
Original comment by [email protected]
on 15 Sep 2010 at 2:29
- Changed state: Invalid
from javacv.
And andre, it looks like you are trying to load 32-bit FlyCapture inside 64-bit
Java or vice versa. Get everything in either 32-bit or everything in either
64-bit. You cannot mix both
Original comment by [email protected]
on 15 Sep 2010 at 2:32
from javacv.
Yes I compile OpenCV without SSE instructions in all cases.
Ok so maybe it is related this the "client/server" version problem. Do you know
how I can know wich version I have ?
But why would the OpenCV example work then...
Original comment by [email protected]
on 15 Sep 2010 at 2:58
from javacv.
Then do not compile with SSE instructions.
http://www.oracle.com/technetwork/java/hotspotfaq-138619.html#compiler_types
Because the compiler that they used to compile Java is not the same compiler
that you used to compile OpenCV
Original comment by [email protected]
on 15 Sep 2010 at 3:10
from javacv.
"Then do not compile with SSE instructions." > you mean OpenCV, Java or my
program ?
Original comment by [email protected]
on 15 Sep 2010 at 3:15
from javacv.
Thank you again... I just reinstalled everything and now it works, kind of.
The entire calibration runs and then when it is completed the following error
occurs.
SEVERE: Could not perform calibration
java.lang.Exception: flycaptureConvertImage() Error 2
at
name.samual.javacv.FlyCaptureFrameGrabber.grab(FlyCaptureFrameGrabber.java:411)
Kind regards,
A.
Original comment by [email protected]
on 15 Sep 2010 at 5:35
from javacv.
Matthieu, I don't know what works or not on a Mac, I don't use one
Original comment by [email protected]
on 16 Sep 2010 at 12:57
from javacv.
BTW, please post on the mailing list to see if anyone figured out how to make
camera capture work under Java for Mac OS X.. There might be other people using
Java to capture from a camera on a Mac, but I am not one of them, and no one
else other than you and me receives messages posted here
Original comment by [email protected]
on 25 Sep 2010 at 3:28
from javacv.
Hi, I have a similar problem on Mac Os X version 10.5.8.
I programmed under Eclipse the following simple example as given in the project
description page:
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.*;
public class Test {
public static void main(String[] args) {
IplImage image = cvLoadImage("test.png", 1);
if (image == null) {
System.err.println("Could not load image file.");
} else {
cvSmooth(image, image, CV_GAUSSIAN, 3, 0, 0, 0);
// ...
}
}
}
I compiles fine, but when I try to run it, I get the following error:
Exception in thread "main" java.lang.UnsatisfiedLinkError: Unable to load
library 'cxcore': dlopen(/usr/local/lib/libcxcore.dylib, 9): no suitable image
found. Did find:
/usr/local/lib/libcxcore.dylib: mach-o, but wrong architecture
/usr/local/lib/libcxcore.dylib: mach-o, but wrong architecture
at com.sun.jna.NativeLibrary.loadLibrary(NativeLibrary.java:163)
at com.sun.jna.NativeLibrary.getInstance(NativeLibrary.java:236)
at com.sun.jna.NativeLibrary.getInstance(NativeLibrary.java:199)
at name.audet.samuel.javacv.jna.Loader.load(Loader.java:44)
at name.audet.samuel.javacv.jna.cxcore.<clinit>(cxcore.java:115)
at name.audet.samuel.javacv.jna.highgui.<clinit>(highgui.java:73)
at Test.main(Test.java:8)
To install OpenCV, I did as stated in the documentation:
1. tar -xjf OpenCV-2.1.0.tar.bz2
2. mkdir opencv.build
3. cd opencv.build
4. cmake [<extra_options>] ../OpenCV-2.1.0 # CMake-way
5. make -j 2
6. sudo make install
Everything seems to work fine during all these steps.
Maybe I need an extra option for the cmake. I tried:
cmake -D CMAKE_OSX_ARCHITECTURES=i386 -D CXX_FLAGS=-m32 -D CMAKE_C=-m32
../OpenCV-2.1.0
But it does not seem to change anything to the way the library is compiled.
Any help would be greatly appreciated.
Thanks,
/Renaud
Original comment by [email protected]
on 26 Oct 2010 at 11:42
from javacv.
I do not use Mac OS X, but my guess is you are trying to use a 32-bit compiled
version of OpenCV with a 64-bit JVM, or vice versa. Everything has to be either
32 bits *or* 64 bits, you CANNOT mix them.
Anyway, you should post your question in the discussion group. In theory, I am
the only one reading what you write here.
Original comment by [email protected]
on 27 Oct 2010 at 7:04
from javacv.
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