Automate room with Open CV

This is a program coded in python and uses Open CV, numpy and pandas to enable the computer to interpret a video and give an output. Right now the program just takes a live video feed and counts the number of people in a space by subtracting the number of people leaving from the people entering. The number of people in a room can control different appliances. For example all the lights switch of when there is no one in the room, thereby saving electricity. The reason computer vision was used instead of motion sensors is that when i was making this system from motion sensors it was causing a lot of errors as it couldn't detect when two people entered or left the space at the same time. I am currently working on the hardware to make the product usable