Updating Fitts' Law to Account for Restricted Display Field of View Conditions

作者：Song, HaiTao^*

来源：International Journal of Human-Computer Interaction, 2012, 28(4): 269-279.

DOI：10.1080/10447318.2011.586306

• COMPUTER INPUT
• INFORMATION

The field of view (FOV) restricted displays are becoming more prevalent in daily use, such as touch-screen-based smart phones; ultramobile PCs; and, to some extent, head-mounted displays. All of these displays occupy significantly smaller portions of a user's FOV compared to standard desktop and laptop displays. Prior research has shown that there is an effect of display size, which is related with display FOV, on movement time (MT) when performing pointing tasks. However, there has yet to be a detailed, quantitative study of how display FOV affects MT across a wide range of FOV values. In the present study two user experiments are conducted, and it is found that Fitts' law is no longer adequate for modeling MT if the display FOV is restricted below a certain value, which we call the critical size. A new Fitts'-FOV model is proposed to extend Fitts' law beyond this critical size to restricted display FOV conditions. The results showed that the new model works as both a descriptive and a predictive model for restricted display FOV conditions.

• 出版日期2012
• 单位电子科技大学