An automatic GUI adjustment method for mobile computing

A variety of Mobile devices such as small screen Netbook, Ultra-mobile PC (UMPC), smart phone, Tablet PC are becoming more prevalent in our daily use. These devices usually mounted with cameras in their front panels, and occupy small portions in user eyes´ Field of View (FOV). Accordingly, the screen contents displayed on these screens are comparatively smaller than those on desktop LCDs. Sometimes, the small sized screen contents may affect the performance of user interaction. In this paper, we propose an automatic GUI (graphical user interface) adjustment method for preventing the performance decrease when interacting with mobile screens. Firstly, we propose an algorithm to find out how to scale the GUI (graphical user interface) content size for mobile screens. Secondly, we use a Fitts´ pointing task to determine a critical size, which reflects in what condition the GUI content is too small and need to be adjusted. Thirdly, we discuss an implementation for this method, which based on human face tracking. We conclude with an evaluation experiment and the results show that our adjustment method could work for mobile screens under different display FOV conditions.