This project presents a real time video based pointing device which allows sketching and writing text over air in front of camera. o achieve the air canvas that reflects on the whiteboard you need to have open CV library in your system. 1)Import all the modules that come in use. 2)We will create track bars for adjusting color of the marker. 3)We will use kernel for dilation purposes. 4) To interact with the user we need to load the webcam of the system. 5) The webcam will detect the movement of marker and store the data. 6) We will draw a whiteboard for implementing the air canvas. 7) You can adjust the color of the marker by adjusting track bars. 8) The project will be implemented and you will able to draw on the whiteboard by waving your hand in air.