Visual behavior analysis of human performance in precision tasks

Abstract

In this paper we have presented a pilot study done on seven subjects for analyzing the variation of human task performance on precision manual tasks by changing the visual distance. A trivial screw fastening task was performed at sitting and standing posture. It was observed that as long as components remained properly visible and within hand reach, the subjects were able to perform faster at a longer visual distance. We performed two additional laboratory experiments that consisted of tasks comprising of block duplication and visual peg-hole search and observed the same results. For recording the visual activity, a headmounted binocular eye-tracker was used that captures first person view of scene along with gaze vector and fixation time. The data generated was analyzed for all three tasks and results are shown that justify our observations.