Exploring the possibilities of using a laser pointer as a computer mouse

Aizeboje, J. (2014). Exploring the possibilities of using a laser pointer as a computer mouse (BEng (Hons) Software Engineering Dissertation). Edinburgh Napier University (Peng, T., McCarra, G.).


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Abstract

Modern day technologies have evolved to present different ways users can interact with computers. This project proposes the use of image recognition to reveal the possibilities of using a laser pointer as a mouse. The outcome has enabled users to simulate movement of the mouse and mouse clicks. The aim of this project is to allow users to interact with a computer from a distance without the need of a mouse, but instead using a laser pointing device, a projector and a web camera.

This application relies heavily on thresholding when used with blob detection techniques as well as the canny edge detection algorithm. The successfulness of this project relied on the accuracy formula that was specially developed during the course of this project. The accuracy formula aims to translate the position of the laser dot to the position the mouse cursor should be moved to.

The worst result retrieved from an unequal quadrilateral shaped projected screen had over 97% of accuracy. While the best result retrieved from the same projected screen had over 99% accuracy concluding to an average of over 98% accuracy overall. A 640x480 and a 320x 240 camera resolutions was used for this test.

As the test results proves the project to be a success further work can be done on the developed accuracy formula to account for its reliability when used in poor conditions.
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Authors

Jeremiah Aizeboje
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