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copied!<p>You are using those OpenCV binaries which are compiled without GPU support.</p> <p><code>C:\opencv\build\x86\...</code> are without GPU support.</p> <p>You have to use the binaries and lib files which are present in the <code>build\gpu</code> folder.</p> <p><code>C:\opencv\build\gpu\x86\...</code> are with GPU support.</p> <p><strong>UPDATE:</strong></p> <p>Procedure:</p> <p>In Visual Studio 2010, go to project properties. In the VC++ Directories, you will see the following page:</p> <p>Add the path of OpenCV <code>include</code> folder in the <strong>Include Directories</strong> textbox. Make sure that multiple paths are separated by a semicolon and there is no space in any of the path.</p> <p>Similarly add the path of OpenCV <code>lib</code> folders for both the GPU and Non-GPU versions in the <strong>Library Directories</strong> Textbox. (Don't forget the semicolon)</p> <p><strong>Important:</strong> When writing the paths in the box, first write the GPU path and after that, the Non-GPU path. </p> <p><img src="https://i.stack.imgur.com/FVWxa.png" alt="enter image description here"></p> <p>Next step is adding the path of <code>bin</code> folder of OpenCV. But not in visual studio, but in the <code>Path</code> Environment variable as shown below:</p> <p><img src="https://i.stack.imgur.com/sHslO.png" alt="enter image description here"></p> <ul> <li>Right Click <code>My Computer</code></li> <li>Go To Properties</li> <li>Go to <code>Environment Variables</code> section</li> <li>Edit the System Variable <code>Path</code></li> <li>Append <code>C:\OpenCV\build\gpu\x86\vc10\bin</code> <strong>and</strong> <code>C:\OpenCV\build\x86\vc10\bin</code> to the Path. Don't forget to separate different values with semicolon. Also---> <strong>GPU Comes First</strong>.</li> <li>Save and exit.</li> </ul> <p>Restart Visual Studio. The linker and <code>#include</code> directive will now recognize the OpenCV libraries. As we have added the path of the GPU libraries also, so complete GPU support will be available in OpenCV.</p> <p>To use GPU functionality of OpenCV, you just have to do the following:</p> <ul> <li><code>#include opencv2/gpu/gpu.hpp</code></li> <li>Specify <code>opencv_gpu243d.lib</code> for Debug Configuration, or <code>opencv_gpu243.lib</code> for Release Configuration in the Additional Dependencies field in the <code>Linker->Input</code> section of project properties.</li> </ul> <p><strong>Some Additional Info:</strong></p> <p>In Visual Studio, there is an easy way to link libraries instead of specifying them in the project properties.</p> <p>Just write these lines in the very start of your code:</p> <pre><code>#ifdef _DEBUG #pragma comment(lib,"opencv_core243d") #pragma comment(lib,"opencv_highgui243d") #else #pragma comment(lib,"opencv_core243") #pragma comment(lib,"opencv_highgui243") #endif </code></pre>

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