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An economical air writing system converting finger movements to text using web camera

In this paper, we propose a “Finger Motion Tracking System” that intends to identify the English character written in air using our finger. The identified character is converted into text and displayed on the screen. A web camera is used to capture the LED fitted finger movements and the patterns are identified with one of the characters available in the database. After identification, the characters are printed onto the display screen. A red-colored LED pointed light source is attached to the finger of the user to ease down the process of finger movement tracking, as it is easier to track down the red color than to track the color of the moving finger. It is assumed that the alphabet drawn is a valid English alphabet and there is no red-colored object other than the LED light within the focus of the web camera. The ultimate objective of the implemented system is to provide an economic solution that can convert the performed finger movement of an English alphabet to text in a text editor and serve as an efficient means of Human-Computer Interaction.