Laser Actuated Mouse System

Presented by :

Atul Chowdhary

Vivek Agrawal

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.

Books

• R. C Gonzales and R. E Woods, “Digital Image Processing” Reading, MA: Addison-Wesley, 1992.• Jain, A. K.. “Fundamentals of digital image processing” . Prentice Hall: Englewood Cliffs,NJ ,1989

Web sites

• “laser light”- Wikipedia, the free encyclopedia. • www.mathswork.com

Journals

• IEEE Proceedings (http://www.ieee.org)

References

Special Thanks to

• Kuntal Ghosh: Lecturer, I.S.I. KOLKATA (M.I.U.)

Thank you all for your time and patience.We could not have done it without you!

Any Questions ? ? ?

SHOOT ! ! !