Evaluation of a Single User autostereoscopic Display System for 3D-TV and PC oriented applications - an example of a user centered design cycle

摘要

We report outcomes of a human factors experiment dedicated to test a prototype single user autostereoscopic (glasses-free) display designed for 3D-TV, internet browsing, and future communication applications. This display is based on a special head-tracking lenticular-screen 3D display principle in order to provide good image quality and free positioning of the viewer. Main objective of the reported study was to identify potential technical shortcomings of the set-up in order to improve critical system parameters in the final version. Ten display experts participated in the experiment. Each subject completed 36 experimental trials. They rated 3D image materials under different viewing conditions in terms of image quality, depth impression, image artefacts, impairment and viewing comfort. Overall, our results show good image quality and depth impression ratings across the tested viewing conditions, especially in a fixed observer position. As soon as the observer moves the assessed variables slightly decrease. Concerning the viewing area our findings indicate to enhance tracking accuracy not only in the centre of viewing zone but also at the border areas in order to improve the viewers feeling of unrestricted positioning.