Research On Key Technology Of Color Stereoscopic Display

To pursue full color, wide-field view, reality show is an everlasting topic of display researching. The stereoscopic display without glasses combined with stereo vision technology which can show impersonality and reality stereo scene is a important aspect of future display area, so it has enormous value in many domains.Optic mechanism is the key problem in our research. Stereoscopic display is a human-machine complex system based on human being's stereo vision. Combining with stereo vision model, the author researched ray separated mechanism using simple model of light beam sketch, calculated and imitated light ray distributing map, then drew out key parameters of line light board. Light board using negative film grating has been designed and manufactured with tiny price and skillful method .Then the first stereoscopic display sample was assembled, and the parameters were verified by experiment.Further, controllable electronic grating board was designed to assure the display switched freely between 2D and 3D.Light board and TFT LCD cell and light module can be assembled together as an unattached component, as called stereoscopic LCD screen. To guarantee display quality, A Dynamic Assemble Method which can also be used in small batch production was designed to make precision assemble possible by man power in lab condition.The other research work include: the concept of Sub-screen, Virtual Screen and Independent View Zone, the stereoscopic image and video format, image translating method , the video compatibility, and software to show static stereo pair.In this paper, the impersonal evaluating standard of stereoscopic display effect was also researched. A parameter "Stereo Degree" was put forward to measure stereoscopic effect. Then the meaning of stereo degree and its value range were discussed in detail. The stereo degree can be used to assess every type of naked-eyes stereoscopic display.A complex coordinate orientation system for measuring stereo degree was researched and designed. The orientation system can set CCD anywhere.Based on coordinate orientation system and stereo degree theory stereoscopic display vision characteristic was measured to verify the conclusions discussed all above. The position of independent view zone educed from these experiments is important reference when the display is used.From virtual screen theory and independence view zone position, the research indicates that the stereoscopic display using line light theory can also obtain look-around function. The key technology of look-around is the eyes position detecting. Image on sub-screen can be changed according to eye's position to attach look-around function. The author used CCD and image process to confirm which independence view zone the eyes posited in. Theexperiments proved that the researched stereoscopic display can obtain look-around function based on CCD method.In the process of research work, some new technology was used, and some of theories and methods with potential immensity value are preferable innovation.The physical essence of naked-eye stereoscopic display was summarized to be two processes of separating and flocking. The "Sub-screen" and "virtual screen" and "Independence View Zone" were put forward to explain optic mechanism for naked-eyes stereoscopic display. Optical light board of negative film grating with low cost was manufactured, then a stereoscopic display sample was assembled."Dynamic Assemble Method" not depending on high cost equipment was put forward for the first time to be used in stereoscopic LCD assembling. The effect of dynamic assemble was analyzed in detail."Stereo Degree" was put forward for the first time to assess the effect of naked eye stereoscopic display. An equipment complex coordinate orientation system based on was designed to measure vision character of stereoscopic display.A method using CCD eye detecting to attach look-around function was also put forward. It has proved that the stereoscopic based on line light can also realize look-around function.In the process of research, many of difficult problems such as optical mechanism, design, manufacture, and evaluate method were resolved. Finally, a naked-eye stereoscopic display sample with national level was manufactured successfully. So our research fills up the blankness in motherland.