title: Algorithm to detect presence of text on image
body: <p>With my new assignment I am looking for a method to detect the presence of text on image. The image is a map - can be for example google map. The task is to detect where the street/city label is placed.</p>
  
  <p>I know that opencv library has algorithm that can detect features (for example human faces) - haar classifier or hog (histogram of oriented gradients), but I heard that learning process of such algorithms is quite difficult.</p>
  
  <p>Do you know of any algorithm, method or a library that could do that (detect presence of text on image)?</p>
  
  <p>Thanks,
  John</p>