title: Considering the result of CV_IMAGE_ELEM as QString?
body: <p>I want to display the results of the 10x10 window CV_IMAGE_ELEM in a LineEdit whose arguments are QString.</p>
  
  <p>Shall I consider the following:</p>
  
  <pre><code>for (int y=0;y&lt;10;y++)
  {
      for (int x=0;x&lt;10;x++) //width
      {
          QString qstr= CV_IMAGE_ELEM(img_crop_mat, uchar, y, x*3+ 2);
          QString ctot= qstr + ctot;
          lineEdit_mat-&gt;setText(ctot + " ");
      }
      lineEdit_mat-&gt;setText("\n");
  }
  </code></pre>
  
  <p>Thank you.    </p>