Asian Journal of Engineering and Technology Innovation

Interactive Projector

Bhavya Shetty, Rachana Gowda, Jyoti Sanap, Ashish Manwatkar

Indira College of Engineering Pune

Abstract

 Laser pointer based interfaces present an interesting alternative for interaction with large displays. In order to operate correctly, such systems need to reliably and quickly detect the on-screen laser spot generated by the pointer. This paper describes an algorithm for real-time laser spot tracking and presents performance results. Large displays are increasingly present for everyday use, at work or at home. Interacting with these displays requires different form of control than for a classical desktop computer, since both keyboard and mouse require a horizontal surface to work. The alternatives for interaction are therefore light/electronic pens, touch sensitive panel, laser pointers or some other kind of wireless handheld input devices (WHID), as well as speech and gesture recognition systems. Video projectors are quickly growing in popularity, given their increasing affordability, ease-of-use and flexibility, providing graphical interface on the projector screen. User can draw on the projector without using any hardware. It introduce an easy solution for drawing on projector, to make an interactive projector on flat surface wall, so that presenter can add more value to presentation material and understanding of attendees, laser beam detection, drawing on laptop, user will be able to change the marker color.

Keywords:

Human-computer interaction, laser pointer, system performance, computer vision.