Visual Fatigue And Mitigation For Sterroscopic Image Observation

In recent years,with the development of cognitive science,people are persuring more methods to acknowledge things, so they are not satisfied with two-dimensional images.There is a growing emphasis on the study of the stereo, specially along with the development of the computer technology, modern printing technology and optical technology etc.The stereo applies to the areas of medical, precision measurement, image art, virtual reality, architectural features, movies, television and other areas more and more widely.Compared to watching the conventional planar images,watching the stereoscopic images based on parallax,while having a strong sense of the stereoscopic effect and the immersion feeling,but,as for a prolonged period may cause the three-dimensional sensation test defeated,afterward,cause the short-term symptom,such as the headache, the eye strain, the vision blurring, the diplopia even the disgusting and so on,and may cause permanent harm to human body,that is why the stereoscopic technology may not popularize such long.There are many reasons for the visual fatigue,such as the electrical properties of the display device,the geometry of skewed image, excessive parallax and its discontinuous variation and the contradiction between convergence and focus adjustment and so on.Among these reasons,the essential reason is that convergence and focus adjustment are inconsistent,which violates the principe that convergence and focus adjustment are consistent in the real world. There are no measures to eliminate the visual fatigue because of the existence of the inconsistency,but,by some measures,visual fatigue can be reduced to a tolerable range.The paper, on the basis of understanding the development of three-dimensional display technology and the stereo factors fully, makes the stereoscopic images of the red-blue complementary color and auto-stereoscopic,proposes the visual fatigue factor model,then design multiple sets of experiment for the verification of the visual fatigue factor model by these images.Finally,based on the visual fatigue factor model and the analysis of the experimental data, measures for improving the visual fatigue in stereoscopic image observation are proposed.