title: How to train tesseract to recognize small numbers in low DPI?
body: <p>I get data from video so there is not way for me to rescan the image, but I can scale them if necessary.</p>
  
  <p>I do have only a limited number of characters, <code>1234567890:</code>, but I have no control over the dpi of the original image or the font.</p>
  
  <p>I tried to train tesseract but without any visible effect, the test project is located at <a href="https://github.com/ssbarnea/tesseract-sample" rel="nofollow noreferrer">https://github.com/ssbarnea/tesseract-sample</a> but the current results are really bad.</p>
  
  <p>Example of original image being captured:</p>
  
  <p><img src="https://i.stack.imgur.com/jMO65.png" alt="enter image description here"></p>
  
  <p>Example of postprocessed image for OCR:</p>
  
  <p><img src="https://i.stack.imgur.com/wuqog.png" alt="enter image description here"></p>
  
  <p>How can I improve the OCR process in this case?</p>