title: How to filter a single column mat with Gaussian in OpenCV
body: <p>I have mat with only one column and 1600 rows. I want to filter it using a Gaussian.</p>
  
  <p>I tried the following:</p>
  
  <pre><code>Mat AFilt=Mat(palm_contour.size(),1,CV_32F);
  GaussianBlur(A,AFilt,cv::Size(20,1),3);
  </code></pre>
  
  <p>But I get the exact same values in AFilt (the filtered mat) and A. It looks like GaussianBlur has done nothing.</p>
  
  <p>What's the problem here? How can I smooth a single-column mat with a Gaussian kernel?</p>
  
  <p>I read about BaseColumnFilt, but haven't seen any usage examples so I'm not sure how to use them.</p>
  
  <p>Any help given will be greatly appreciated as I don't have a clue.</p>
  
  <p>I'm working with OpenCV 2.4.5 on windows 8 using Visual Studio 2012.</p>
  
  <p>Thanks</p>
  
  <p>Gil.</p>