trungnt13

# original post: http://blog.hostonnet.com/uninstall-gui-from-ubuntu-14-04-lts
sudo apt-get purge -y lightdm
sudo shutdown -r now

sudo apt-get clean
sudo apt-get autoclean

apt-get purge -y unity*
sudo apt-get purge -y unity*
sudo apt-get purge -y gnome-*

IAmSuyogJadhav

import cv2

image = cv2.imread('test.jpg')
overlay = image.copy()

x, y, w, h = 10, 10, 10, 10  # Rectangle parameters
cv2.rectangle(overlay, (x, y), (x+w, y+h), (0, 200, 0), -1)  # A filled rectangle

alpha = 0.4  # Transparency factor.