title: Methods for detecting vertical texts in an image using OpenCV
body: <p>I want to detect text in containers such as this
  <a href="https://i.stack.imgur.com/A3WbU.jpg" rel="nofollow noreferrer">container with vertical texts</a></p>
  
  <p>I tried OpenCV examples such as <a href="https://github.com/opencv/opencv_contrib/blob/master/modules/text/samples/textdetection.cpp" rel="nofollow noreferrer">textdetection.cpp</a></p>
  
  <p>Those are capable of detecting horizontal text only. Is there other solutions than cloud vision ocr to address such situations.</p>