title: qt opencv can't read the image
body: <p>I'm quite new around the qt creator and I'm sick of it's building errors and tones of undefined errors. Eventually i installed opencv3.2 with no error. Noti can use opencv libraries but i can't read the files like &quot;image.jpg&quot;. I tried everything. Path is %100 correct slashes are correct. There were no error during the cmake installation. Pls give me hand :D</p>
  <pre><code>
  LIBS += C:\opencv3.2\build\bin\libopencv_core320.dll
  LIBS += C:\opencv3.2\build\bin\libopencv_highgui320.dll
  LIBS += C:\opencv3.2\build\bin\libopencv_imgcodecs320.dll
  LIBS += C:\opencv3.2\build\bin\libopencv_imgproc320.dll
  LIBS += C:\opencv3.2\build\bin\libopencv_features2d320.dll
  LIBS += C:\opencv3.2\build\bin\libopencv_calib3d320.dll
  </code></pre>
  <pre><code>try {
       Mat image = imread(&quot;D:\\Adsız.jpeg&quot;,0);
       if (!image.data)
           cout &lt;&lt; &quot;Data is empty&quot; &lt;&lt; endl;
      
       namedWindow(&quot;My image&quot;);
       imshow(&quot;My image&quot;,image);
       waitKey();
  } catch (const exception&amp; e) {
  
  }
  </code></pre>
  <p>Output</p>
  <pre><code>10:50:24: Starting C:\Users\YUNUS EMRE\Qt Workspace\build-OpenCVTest-Desktop_Qt_5_15_0_MinGW_32_bit-Release\release\OpenCVTest.exe ...
  Data is empty
  OpenCV Error: Assertion failed (size.width&gt;0 &amp;&amp; size.height&gt;0) in imshow, file C:\opencv3.2\sources\modules\highgui\src\window.cpp, line 312
  []10:50:27: C:\Users\YUNUS EMRE\Qt Workspace\build-OpenCVTest-Desktop_Qt_5_15_0_MinGW_32_bit-Release\release\OpenCVTest.exe exited with code 0
  </code></pre>
  <p>It returns empty image.</p>