<![CDATA[Opencv 3.1 with Cuda on QT 5.5.1]]>Hi,
I try use Opencv with Cuda to Qt a long time, but no sucess on this job. Now, i read on some foruns that g++ on Windows can't compile Opencv with Cuda to Qt, so I tried compile Opencv with Cuda on Visual Studio to Qt, I do not know if it works, but I tried. The problem happens when I compile on Qt, apparently compiling opencv in visual studio works, because QT recognizes the libraries but show errors bellow:

C:\Users\Computador\Dropbox\goProCorrection\GoProQT\correction.cpp:31: error: undefined reference to cv::imread(cv::String const&, int)' C:\Users\Computador\Dropbox\goProCorrection\GoProQT\correction.cpp:32: error: undefined reference to cv::cvtColor(cv::_InputArray const&, cv::_OutputArray const&, int, int)'
C:\Users\Computador\Dropbox\goProCorrection\GoProQT\correction.cpp:37: error: undefined reference to cv::findChessboardCorners(cv::_InputArray const&, cv::Size_<int>, cv::_OutputArray const&, int)' C:\Users\Computador\Dropbox\goProCorrection\GoProQT\correction.cpp:40: error: undefined reference to cv::cornerSubPix(cv::InputArray const&, cv::InputOutputArray const&, cv::Size<int>, cv::Size<int>, cv::TermCriteria)'

All erros are undefined reference to.

On my .pro I put these:
INCLUDEPATH += C://Opencv//3.1.0//release_cuda//install//include
LIBS += C://Opencv//3.1.0//release_cuda//bin//Debug//*.dll

]]>https://forum.qt.io/topic/63563/opencv-3-1-with-cuda-on-qt-5-5-1RSS for NodeMon, 20 Apr 2026 19:18:29 GMTFri, 29 Jan 2016 12:43:54 GMT60<![CDATA[Reply to Opencv 3.1 with Cuda on QT 5.5.1 on Fri, 29 Jan 2016 15:35:55 GMT]]>I solved first problem setting msvc compiler on Qt and second problem compiling again tbb.

]]>https://forum.qt.io/post/310439https://forum.qt.io/post/310439Fri, 29 Jan 2016 15:35:55 GMT<![CDATA[Reply to Opencv 3.1 with Cuda on QT 5.5.1 on Fri, 29 Jan 2016 14:12:29 GMT]]>Hi and welcome to devnet,

Based on your OpenCV location, my guess is that the application doesn't find its DLLs on startup. Go to the Run part of the Project panel, edit there the PATH environment variable and add the path to your OpenCV DLLs there.

]]>https://forum.qt.io/post/310427https://forum.qt.io/post/310427Fri, 29 Jan 2016 14:12:29 GMT<![CDATA[Reply to Opencv 3.1 with Cuda on QT 5.5.1 on Fri, 29 Jan 2016 13:51:19 GMT]]>I solved this problem but now shows other error:
During startup program exited with code 0xc000a200

]]>https://forum.qt.io/post/310425https://forum.qt.io/post/310425Fri, 29 Jan 2016 13:51:19 GMT