Introduction The project presented here describes an alternative method for controlling a mouse using a laser pointer.

Objectives This application is helpful for physically challenged people as it provides hands free operation. Through a standard laser pointer, we can revolutionized the presentation industry by introducing a new freedom of movement. Replacement Interface for a Wireless Mouse.

This application can be used by physically challenged people as it includes hands free operation Applications A laser light can be fitted with a head band or it can be fitted with spectacles. Laser light

Applications Through a standard laser pointer, we can revolutionized the presentation industry by introducing a new freedom of movement.

Applications Replacement Interface for a Wireless Mouse

Find the brightest area on the screen. Average positions of all bright points on the screen to extract pointer location. Transform the resulting coordinates to screen coordinates. Update pointer position. If there is a click command given, trigger a mouse click event on the updated pointer location Algorithm

Future Improvements Finding a small spot on the screen is problematic due to high rates of noise. Use an infrared camera and laser pointer let us “see” only the laser pointer and ignore background noise. Problem Solution

Future Improvements Mapping of the laser pointer from the screen to actual projection screen may not be precise Using the concept of pattern recognition, we can directly point the laser pointer on the projection screen Problem Solution

Don’t point lasers in people’s eyes or any light reflecting surface! Try to avoid the green color laser diode as it is most harmful to the human eyes. Ethical Considerations

Conclusion Our goal in this project was to design alternative system for controlling mouse cursor movements and mouse clicks events. The solution described here answer the problem that presented above. The solution is helpful for physically challenged people as it provides hands free operation.

R. C Gonzales and R. E Woods, “Digital Image Processing” Reading, MA: Addison-Wesley, Jain, A. K.. “Fundamentals of digital image processing”. Prentice Hall: Englewood Cliffs,NJ,1989 Books “laser light”- Wikipedia, the free encyclopedia. Web sites IEEE Proceedings ( Journals References

Kuntal Ghosh: Lecturer, I.S.I. KOLKATA (M.I.U.) Special Thanks to Thank you all for your time and patience. We could not have done it without you!

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