I am writing code to perform background subtraction. The relevant part of the code is:
cv::Mat fg_mask; // Foreground mask generated by MOG2 method
cv::Ptr<cv::BackgroundSubtractor> mog2; // MOG2 background subtractor
mog2 = cv::createBackgroundSubtractorMOG2();
//**********************************************************************
// Start processing the video
while ( video.read ( frame ) )
{
#ifdef _DEBUG
frame_num++;
std::cout << frame_num << '\n';
#endif
cv::Mat gray;
cv::cvtColor ( frame, gray, cv::COLOR_BGR2GRAY );
mog2->apply ( gray, fg_mask );
...
}
As I start to execute the code, I get an exception thrown from inside ocl.cpp from the statement:
CV_OclDbgAssert(clEnqueueUnmapMemObject(q, (cl_mem)u->handle, data, 0, 0, 0) == CL_SUCCESS);
saying
- cstr_ 0x00ed9d04 "..\..\opencv\sources\modules\core\src\ocl.cpp:4446: error: (-215) clEnqueueUnmapMemObject_pfn(q, (cl_mem)u->handle, data, 0, 0, 0) == 0 in function cv::ocl::OpenCLAllocator::deallocate"
I am able to run this in a standalone application but the integration is causing me headaches. The exception is thrown from a deallocation function which is weird. Just wondering if anyone has come across such error.