cbd charlie brown decoder virtualenv / setup and configure sudo apt install virtualenv cd ~/ virtualenv -p /usr/bin/python2.7 cbd-env source ~/cbd-env/bin/activate sudo apt install tesseract-ocr References http://www.begnini.net/2015/12/30/quebrando-captcha-com-opencv-e-python.html https://gist.github.com/chroman/5679049 tool.cohmetrix.com https://gist.github.com/FarhadurFahim/73c0fad6350332cef7a653bcd762f08d