PROJECT TITLE :

Haptic-Assisted Target Acquisition in a Visual Point-and-Click Task for Computer Users with Motion Impairments

ABSTRACT :

Haptic help is the method of using force feedback to assist the operator in human-pc interaction (HCI). This could take the form of guiding the operator toward a target or aiding them in its choice. Haptic feedback has previously been investigated to help motion-impaired computer users; however, limitations of previous a pair of DOF haptic target acquisition techniques like gravity wells and high-friction-targets have hampered progress. During this paper, two new haptic-assistive techniques are presented that utilize the 3 DOF capabilities of the Phantom Omni to supply help that is designed specifically for motion-impaired laptop users. These include haptic cones and V-formed funnels. To evaluate the effectiveness of the new haptic techniques, a series of point-and-click experiments were undertaken in parallel with cursor analysis to check the levels of performance. The task required the operator to provide a predefined sentence on the Windows-On-Screen Keyboard. The results of the study prove that higher performance levels will be achieved using techniques that are less constricting than ancient help and while not many of the drawbacks. Haptic cones produced the most important results when put next to an unassisted interface with a mean improvement of fifty three p.c in the number of missed clicks and a hundred forty five percent improvement in throughput.


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