Eye-tracking Theory and User Interface Design

In recent years, the advancement of eye tracking technologies facilitates the applications of gaze-based interaction in different circumstances. Monitored by an eye tracker, the user’s eye gaze can be used as an independent input channel to control the computer, or it also can be used as an augmented input channel in the process of human-computer interaction (HCI) to provide the user with additional assistances. Our research includes developing performance model as well as designing graphical interfaces for dwell-based eye-tracking, such as eye-typing interface.

Related Publications
EyeSwipe: Dwell-free Text Entry Using Gaze Paths
Andrew Kurauchi, Wenxin Feng, Ajjen Joshi, Carlos Morimoto, Margrit Betke
CHI 2016 | PDF | ACM DL |
Modeling Dwell-based Eye Pointing at Two-dimensional Targets
Xinyong Zhang, Wenxin Feng, Hongbin Zha
CHI EA 2012 | PDF | ACM DL |
Effects of Different Visual Feedback Forms on Eye Cursor's Stabilities
Xinyong Zhang, Wenxin Feng, Hongbin Zha
HCII 2011 | PDF| Springer Ref |

Camera-based Interfaces for People with Disabilities

This study aims to help people with severe disabilities access computer technology. Our research is based on video-based mouse-replacement systems, which uses a web camera to track the user’s head movements so they can control the mouse pointer without using their hands. We focus on user needs analysis and user interface design in order to improve the usability of the system. Also, we develop innovative assistive software for a variety of common applications including text entry, web browsing, picture editing, etc.

Related Publication
HMAGIC: Head Movement And Gaze Input Cascaded Pointing
Andrew Kurauchi, Wenxin Feng, Carlos Morimoto, Margrit Betke
PETRA 2015 | PDF |ACM DL |
Target Reverse Crossing - A Selection Method for Camera-based Mouse-replacement Systems Wenxin Feng, Ming Chen, Margrit Betke
PETRA 2014 | PDF | Poster | ACM DL |

Extension of Fitts' Law

Fitts’ law is the most widely applied model in the field of HCI. However, this model and its existing extensions are still limited for 2D pointing task especially when the effects of movement direction remain in the task. In this study, we employed the concept of projection to account for the effects of target width and height on movement time so that we seamlessly integrate movement direction, amplitude, target width and height into the new extension of Fitts’ law. We uncovered not only the periodicity of the asymmetrical impacts of target width and height with the variation of direction but also their interrelation. We also provided recommendations for 2D pointing experiments and implications for interface designs.

Related Publication
Extending Fitts' Law to Account for the Effects of Movement Direction on 2D Pointing
Xinyong Zhang, Hongbin Zha, Wenxin Feng
CHI 2012 | PDF | ACM DL |

Exploration of Communication between
Left-behind Children and Their Parents in China

In China, millions of migrant workers have moved to cities for better-paid jobs and have left their children behind at their rural homes. These “left-behind” children and their migrant parents use mobile phones as their primary method of maintaining family communication. To better understand the use of technology in this long-distance communication, we conducted a multi-phased study using interviews and surveys in three different Chinese rural areas. We also proposed design implications and developed mobile applications to enhance their communication.

Related Publication
An Exploration on Long-distance Communications between Left-behind Children and Their Parents in China
Lu Pan, Feng Tian, Fei Lu, Xiaolong Zhang, Ying Liu, Wenxin Feng, Guozhong Dai, Hongan Wang
CSCW 2013 | PDF | ACM DL |