Air Canvas using Computer Vision 🎨

• Air Canvas is a virtual painting application that helps the user to draw on screen virtually just by waving their finger fitted with coloured caps in the air without touching the screen.
• This project uses the concept of Computer Vision and is implemented using Python, OpenCv & Numpy.
• Click here to watch the demo video

System Requirements:

• Python
• OpenCv
• Numpy
• WebCam

Concepts used:

• Color Tracking: Tracks the colored object at the finger tip.
• Contour Detection: Detects the position of the colored object and making a circle over it.
• Frame Processing: Tracking the finger tip and drawing points at each coordinate positions for virtual painting effect.
• Image Masking: Image mask is created after detecting color.
• Color space conversion: Converts the BGR into HSV values.

Algorithm:

• Read the frames and convert the captured frames to HSV color space.
• Prepare the canvas frame and put the desired colors for painting.
• Prepare the mask and perform morphological operations on it.
• Detect the contours.
• Store the centre coordinates of the contour in the array for successive frames.
• Finally draw the points stored in the array on the screen.

Screenshots:

Initially, after running the python file the window will look like this:

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After choosing the color you can start painting:

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Applications of this project:

• Draw your imagination on screen easily.
• Can be used for teaching purpose and one can easily rub the window by just choosing clear all option.

Hope you all liked this project ❤️