title: Tesseract for negative numbers
body: <p>What might I do to improve tesseract accuracy for negative numbers? For whatever reason it just won't detect it correctly, even though the picture is pixel-perfect.</p>
  <p><a href="https://i.stack.imgur.com/zoLTe.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/zoLTe.png" alt="Image in question" /></a></p>
  <p>I'm running tesseract 4.1, using LSTM with fast tessdata.
  I've assigned <strong>&quot;tessedit_char_whitelist&quot;</strong> to <strong>&quot;-0123456789&quot;</strong> and I'm using segmentation mode <strong>PageSegMode.SingleChar</strong>.</p>
  <p>Tesseract is recognizing only the dash symbol and a newline <strong>&quot;-\n&quot;</strong>.</p>