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Question

when click button run... in output....

java.lang.OutOfMemoryError
OpenCV Error: Insufficient memory (Failed to allocate 6220800 bytes) in unknown function, file ..\..\..\src\opencv\modules\core\src\alloc.cpp, line 52
Exception in thread "Thread-4" java.lang.RuntimeException: ..\..\..\src\opencv\modules\core\src\alloc.cpp:52: error: (-4) Failed to allocate 6220800 bytes    
    at com.googlecode.javacv.cpp.opencv_core.cvCloneImage(Native Method)
    at com.googlecode.javacv.cpp.opencv_core$IplImage.clone(opencv_core.java:521)
    at vidtracking.MainView.backgroundSubtraction(MainView.java:666)
    at vidtracking.MainView.access$1000(MainView.java:32)
    at vidtracking.MainView$8.run(MainView.java:461)

Answer 1

java.lang.OutOfMemoryError OpenCV Error: Insufficient memory

This exception is thrown Because. OutOfMemoryError

when the Java Virtual Machine cannot allocate an object because it is out of memory, and no more memory could be made available by the garbage collector. OutOfMemoryError objects may be constructed by the virtual machine as if suppression were disabled and/or the stack trace was not writable.

Common solutions in this case are:

1. Optimize your code to use less memory and/or reuse objects instead of creating new ones thus reducing the number of times the garbage collector runs. If you create a lot temporary objects (eg in a loop) you should try to reuse them.
2. Increase heap size using Xmx switch eg -Xmx512m (you can help yourself finding correct value by connecting to your JVM with JXM and Jconsole).
3. Disable the error check using -XX:-UseGCOverheadLimit The third approach will only result in another kind of error messages – heap related java.lang.OutOfMemoryError.
4. Add -XX:+HeapDumpOnOutOfMemoryError to JAVA_OPTS and analyse the dump with IBM Memory Analyzer (part of IBM Support Assistant Workbench) looking for memory leaks (see references).

Only for netbeans .

The correct way is to right-click on the project and select " Properties " and then " Run "; there you can set the VM options appropriately (-Xmx256m, for instance). It should look something like this:

Answer 2

java.lang.OutOfMemoryError OpenCV Error: Insufficient memory

It seems you are loading large file into memory. Try to increase memory using -Xms and -Xmx settings .

If you have more memory than file size, then possible cause could be some memory leaks.

Answer 3

You need to allocate atleast 6220800 bytes (ie ~6mb).
Run your java app with these jvm settings (to allocate more heap size):

java myapp.jar -Xms10m -Xmx10m

For eclipse:

Windows Preferences -> java -> Installed JREs:
Select JRE/JDK you are using
Click Edit
Set VM arguments: -Xms10m -Xmx10m
Start your app again.

Answer 4

Its symptom of JVM crash or no memory for allocation of resource in JVM. try to tune your program or increase JVM memory