title: Matlab - OCR function digits recognition
body: <p>Recently I'm trying to detect digits from images in Matlab and I encountered a problem: a clear visible '1' on photo below (and many similar)</p>
  
  <p><a href="http://i.stack.imgur.com/tkTMN.jpg" rel="nofollow">1</a></p>
  
  <p>is not detected by 'ocr' function. Could you tell me how can I preprocess this image to allow this funcion recognize such a numbers?</p>