Experiments with a Camera-Based Human-Computer Interface System

A human-computer interface (HCI) system called " The Camera Mouse " is evaluated. It tracks a user's movements with a video camera and translates them to movements of the mouse pointer on the screen [1]. The main objectives for the experimentation were to quantitatively define the performance of the system for different users, features, and applications, to determine the optimal settings for different kinds of users, and to compare measurements over all users in order to suggest enhancements to a future system of this type. The experiments were conducted with 11 participants including a subject with severe physical disabilities. Each subject repeatedly performed a number of tasks. During each trial, a different feature was tracked and the elapsed time and mouse movement trajectories were measured. These measurements were used to quantify the system's performance.