The angle mouse: target-agnostic dynamic gain adjustment based on angular deviation

We present a novel method of dynamic C-D gain adaptation that improves target acquisition for users with motor impairments. Our method, called the Angle Mouse, adjusts the mouse C-D gain based on the deviation of angles sampled during movement. When angular deviation is low, the gain is kept high. When angular deviation is high, the gain is dropped, making the target bigger in motor-space. A key feature of the Angle Mouse is that, unlike most pointing facilitation techniques, it is target-agnostic, requiring no knowledge of target locations or dimensions. This means that the problem of distractor targets is avoided because adaptation is based solely on the user's behavior. In a study of 16 people, 8 of which had motor impairments, we found that the Angle Mouse improved motor-impaired pointing throughput by 10.3% over the Windows default

• Type: Conference
• Year: 2009
• Where: CHI
• Authors: Jacob O. Wobbrock, James Fogarty, Shih-Yen (Sean) Liu, Shunichi Kimuro, Susumu Harada
• Keywords: Angle Mouse, C-D Gain Adaptation, CHI 2009, Human Computer Interaction, Mouse C-d Gain