title: Which library to use to extract text from images?
body: <p>I am writing a program that when given an image of a low level math problem (e.g. 98*13) should be able to output the answer. The numbers would be black, and the background white. <em>Not</em> a captcha, just an image of a math problem.</p>
  
  <p>The math problems would only have two numbers and one operator, and that operator would only be +, -, *, or /.</p>
  
  <p>Obviously, I know how to do the calculating ;) I'm just not sure how to go about getting the text from the image.</p>
  
  <p>A free library would be ideal... although If I have to write the code myself I could probably manage.</p>