Very simple application crashing on close [closed]
Hi guys,
this is my very first post here, sorry if I do something wrong :)
I am definitely a newbie so I am probably making a very stupid mistake... I need to find the center of a circle in a still image, and I found this code which works as expected: http://docs.opencv.org/doc/tutorials/imgproc/imgtrans/hough_circle/hough_circle.html#code
But for some reason, the program crashes when it exits (everything is fine until the "return 0;" instruction). I realized that it crashes only if at least one circle has been detected, otherwise it closes without errors. I guess something goes wrong with memory but I don't know exactly how to find out where the problem is. It looks like a bad segmentation fault...
I'm working on a Windows7 64bit machine, with OpenCV 2.4.6 and Visual Studio 2008 (I am creating a win32 application).
Do you have any idea about how I could spot the cause of this?
Thanks for your help ;)
Do you use exactly this code? Could you post the assertation / exception / stacktrace or whatever additional info you have? Probably try to call destroyAllWindows() before return 0. This closes the windows created with imshow.
Hi Thomas! Yes, the code is pretty much the same, I have just hard-coded a string rather than using a command line argument as the path to a JPEG image. The strange thing is that in "debug mode" (i.e. compiling using the libraries with the "-d" suffix), everything works as expected. The only information I can get from Visual Studio is that the heap is somehow "damaged":
> HEAP[myNewOpenCv.exe]: Invalid address specified to RtlFreeHeap( 003C0000, 0044D178 )
This error occurs on close, no matter whether I call destroyAllWindows() or not. You can download my VS2008 project here: http://tinyurl.com/ogbhnja (it's a zip on Dropbox); I guess there could be something wrong in my project settings (compiler/linker)...thanks!
Have a look on this; http://answers.opencv.org/question/6495/visual-studio-2012-and-rtlfreeheap-error/ It seems to be a common issue with Microsoft IDEs, also with older ones and older versions of OpenCV, for example here: http://opencv-users.1802565.n2.nabble.com/new-to-openCV-have-question-about-cvReleaseImage-error-in-in-VC-2003-td2268910.html . I'm developing with Linux, never experienced these errors so far :)
Thank you very much. I always develop on Linux, this is my very first time on Windows... Anyway, it looks like I may be luckier with a DLL (someone says this problem does not occur in that case), which is exactly what I would need in the end...I'll give it a try in the next few days :)