- 學位論文
裸眼式立體顯示器之彎曲效應與視差障壁厚度對觀賞視域之影響
Effects of Display Curvature and Barrier Thickness on the Viewing Zones of Barrier-Type Autostereoscopic Displays
摘要
顯示影像的方式從平面進展到立體，並在硬體不斷的研發進步之下，立體影像技術不斷的提升，其中以裸眼式3D立體顯示技術最廣為大眾所驚豔，其擁有不需配戴眼鏡之優勢，肯定會成為3D立體顯示器的發展主流，更將是3D立體顯示器普及化的重要關鍵。 空間多工裸眼式立體顯示器的面板上具有互相穿插的影像資訊，本篇論文探討雙影像型式，所設計給予左眼的影像資訊為View 2，給予右眼的影像資訊為View 1，各個影像資訊再透過外加在顯示面板前的週期性視差障壁分光，分別提供不同視差影像給予左右眼，所以當觀賞者在觀賞視域時，分別接收不同影像才能感受到立體視覺。 論文中利用最兩端畫素發出的光從不同視差障壁開口中所產生的交集來描述觀賞視域，並利用幾何關係的方式計算出所有觀賞視域的個數。接著更進一步的探討視差障壁厚度對主觀賞視域以及側觀賞視域的影響。而曲面型顯示器有著較佳的沉浸感，且更符合人眼所觀看到的視覺體驗，因此能帶給觀賞者更好的觀賞體驗。利用先前論文中平面裸視立體顯示器的觀賞觀賞幾何關係，更進一步研究增彎曲效應後對所有觀賞視域的影響。本篇論文利用幾合光學的方式使用所有畫素的光束追跡來描繪曲面裸視立體顯示器的觀賞視域，並探討隨著曲率半徑變化所有觀賞視域的變化情況，並進一步計算所有觀賞視域的面積大小量化觀賞視域。由結果可知越外側的觀賞視域其大小和位置隨曲率半徑的變化越明顯，有些觀賞視域甚至完全消失。
並列摘要
The way to display image has been advanced from 2D to 3D, and with the hardware advancement, the stereoscopic technology becomes more and more advanced. One of the amazing stereoscopic displays is auto-stereoscopic display, the advantage of this kind of display is that observers do not need to wear glasses, thus the auto-stereoscopic display definitely will be the progress main stream of 3D display, and furthermore the auto-stereoscopic display will be the key technology of 3D display popularization. In a multiplexed 2D autostereoscopic display, image information from separate views is interlaced across the display panel. In the case of this paper, a two-view display is considered, with the view designated to the left eye as View 2, and View 1 for the right eye. The image information are then separated by a periodic binary barrier, providing the left and right eye with a different view respectively, and a viewer within the viewing-zone (VZ) will perceive the stereoscopic image. The viewing-zone is an important topic in autostereoscopic display. In this paper, we propose a method, based on optical theories and simulations to determine the main and side lobes, and using geometrical relationships to calculate the number and position of the lobes. Furthermore, we investigate the influence of the actual physical barrier thickness, on the viewing-zone. In general, the curved type displays delivers a better sense of visual i mmersion, and fits more closely with the visual experience of human sight, allowing for a better and more comfortable viewing experience. Building on previous studies on the subject , this paper further studies the impact on the viewing-zone with changing the radius of curvature. This paper uses the geometric approach to model the viewing-zones of a curved barrier-type autostereoscopic display, and to explore the influence of the changes in the radius of curvature of the display panel, on the area of the main and side viewing-zones. From the result of the simulations, the viewing-zone further out to the sides are affected more severely by the changes in the display curvature, some vanishing completely.