Desarrollo de un sistema embebido de “Eye Tracking” para personas con discapacidades motrices superiores.

Abstract

This study proposed to develop and implement an embedded eye-tracking platform for people with upper limbs motor disabilities. After having analyzed and evaluated several eye-tracking prototypes with their different techniques and programming algorithms, a comprehensive and detailed research was conducted in order to determine the percentage of people suffering this disability. Upper limbs motor disabilities cause them difficulties for accessing a normal education system, as well as a very limited access to several information sources such as: internet access, access to e-book repositories, etc. The Embedded Eye Tracking platform was developed to facilitate the access to reading of electronic books from a repository set up in the computer. Its main function was to follow the human eye specifically the pupil. Eye Tracking was performed by a RASPICAM camera, this device is connected to a RASPBERRY PI 2 card that captures the pupil data, then, it sends the data through a wireless communication module to a computer. It was installed a software based on MATLAB libraries, which processes the data and executes the cursor movement, called VIRTUAL MOUSE since it does not interact physically with the user, the cursor is located on the icon by executing the document and accessing information. In the validation of the platform, 20 randomized tests were taken consequently, the expected outcomes were obtained, which leads to conclude that the embedded eye-tracking platform is a prototype capable of meeting the established expectations to improve the lifestyle of people with this type of disabilities. As a general recommendation, it is advisable to perform a simple calibration of the prototype before using it, according to the particularity of each individual.