Research On Influencing Factors Of Visual Comfort In Stereoscopic Display

The continuous improving stereoscopic display techniques can provide theviewers a more immersive experience. Yet, with a wide spread of stereoscopicdisplays, concerns about visual uncomfort caused by watching stereoscopic contentshave also been raised. Visual discomfort has been the subject of considerable researchin relation to stereoscopic displays; therefore, it has a great significance to study theinfluencing factors of visual comfort in stereoscopic displays.Firstly, the evaluation technology and influencing factors of visual comfort instereoscopic displays are summarized in the first chapter based on further study on thecharacters of human visual system and the research background and the currentdomestic and foreign status of the stereoscopic display technology. Secondly, themulti-gray level and9-point measurement of stereoscopic displays eye crosstalktesting method and a white-crosstalk and black-crosstalk based measurement of viewangle testing method were adopted. Then, the relationship of crosstalk and view anglebetween PDP/LCD active shutter eye-glass3DTV and passive eye-glass3DTV withdifferent sizes were analyzed. Thirdly, the subjective evaluation criteria are analyzeddeeply and on this basis the characteristic parameter, saturation, was extracted and anew method of step-by-step approximation was proposed in this paper. Then, througha large number of rigorous subjective tests, the comfortable saturation matching anddifference maps were got by step-by-step approximation. The universal applicabilityof both maps is verified according to other stereoscopic images.The experimental results show that crosstalk changes with screen size and thestep-by-step approximation can greatly reduce the workload of the subjectiveexperiment and the comfortable saturation matching and difference maps provide abase for the subjective and objective assessment of binocular image pairs.