https://towardsdatascience.com/read-text-from-image-with-one-line-of-python-code-c22ede074cac
https://tesseract-ocr.github.io/tessdoc/ImproveQuality
pip install --proxy=http://proxy:8080 --upgrade -U pytesseract
pip install --proxy=http://proxy:8080 --upgrade -U tesseract
yum install tesseract
python text_read.py --path images/bitcoin.jpg