Cognitive Performance Evaluation And Visual Fatigue Mechanism Research For 3D Display

With the development of computer science and technology,humancomputer interaction has become one of the necessary operations in many fields,and cognitive ergonomics dedicated to the study of human-computer interaction has also received widespread attention.Compared with the traditional two-dimensional display,three-dimensional display technology can significantly improve the cognitive performance of people in some task scenarios,thereby improving the efficiency of human-computer interaction,which is the development direction of the future display technology.In recent years,because the three-dimensional light field display technology has the unique advantages of presenting multi-angle,all-round stereoscopic images without any visual aids,it has attracted the attention of many researchers.At present,the research of three-dimensional display technology mainly focuses on improving the performance of display devices,and there are relatively few studies to evaluate three-dimensional display devices from the perspective of cognitive ergonomics.This paper will focus on the three-dimensional light field display,focusing on the cognitive factors of human cognition in cognitive ergonomics and visual health,from the perspective of visual cognitive efficacy and the phenomenon of eye fatigue.The specific research content and innovation points are summarized as follows:(1)Assessment of cognitive performance of 3D light field displays for typical tasks.This paper presents a method for assessing the cognitive performance of 3D light field displays for air traffic control task performance.A simplified variant was designed as an experimental task to conduct a comprehensive quantitative assessment of the cognitive performance of the 3D light field display,and the cognitive performance of the 3D light field display was measured based on two indicators:the reaction time of the subject to complete the task and the number of misjudgments.T-tests were conducted to investigate the significance of the differences in display type and gender differences in cognitive performance.The final results demonstrated that the 3D light field display significantly improved the cognitive performance of the subjects in the typical task scenario.(2)Study on the mechanism of visual fatigue based on eye tracking for 3D light field display.An eye-tracking experiment based on eye tracking is proposed to model the mechanism of visual fatigue.A 3D visual fatigue symptom induction experiment was designed in which subjects watched multiple video passes on a 3D light field display.The eye movement signals of the subjects during the video viewing were collected by means of eye tracking,and the subjective 3D visual fatigue symptom degree scores of the subjects at the corresponding moments were also recorded.The collected data sets were processed and analyzed to draw conclusions related to the change pattern of eye movement signals with the aggravation of 3D visual fatigue symptoms;the support vector machine algorithm was used to train and model the collected data sets to obtain a model for assessing the current 3D visual fatigue symptoms by eye movement signals under 3D light field display conditions;the discriminative accuracy of the model was obtained by cross-validation method.The research results of this paper mainly include:from the perspective of cognitive ergonomics,studying the cognitive performance of 3D light field display devices and the induced visual fatigue symptoms,quantitatively proving the positive impact of 3D light field display on cognitive performance in typical scenes;proposing a more reliable 3D visual fatigue evaluation model for the corresponding 3D light field display devices.The above results will be a good reference for guiding the better application of 3D light field display devices in the field of human-computer interaction.