title: Recognizing a pattern using OpenCV
body: <p>This my problem. </p>
  
  <p>I have a symbol written in black in a white background. As an example assume my symbol is "Z". But it does not has to be a letter always.</p>
  
  <p>Now i have image of this pattern stored.</p>
  
  <p>Then i draw another pattern. image size will be same as the above. Then i input this new pattern to my program and i want to check whether it matches to the stored pattern. </p>
  
  <p>Even if the new patten has a similar shape but different size, it should be matched to the stored image. Therefor pattern shape is the differentiating factor. Obviously rotated patter means a different pattern.</p>
  
  <p>Is there a way to do this in opencv??</p>
  
  <p>I tried using feature matching. But it did not work. I think i can use a classifier but i do not have a good knowledge on that.</p>
  
  <p>Can some one help me??</p>