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题名	具有准确空间信息的三维显示技术的研究
作者	郭怡明
文献子类	硕士
导师	朱菁
关键词	三维 Three-Dimensional 全息 Holographic display 强度传输方程 TIE 头戴显示器 Head-Mounted Display 多焦面显示 Multi-focal plane display
其他题名	Research of Three-Dimensional Display with accurate spatial-information
英文摘要	随着显示技术的快速发展，二维显示技术已经日渐成熟，并应用在人类生活的方方面面，但人们已经不能满足于此，更倾向于观看与真实世界一般具有准确深度信息的三维显示。发展到现在，三维显示成果颇丰，但由于目前的技术和材料缺陷仍会导致视觉眩晕、深度感知错误或画面闪烁等问题，所以人们对三维显示有更高的期待，希望用裸眼或单眼即可观看到三维图像，并能准确获取深度信息。 到目前为止，公认的较为理想的三维显示是全息显示。全息显示通过获取和恢复物体的三维信息（振幅和相位信息），从而恢复物体原始物光波，如同观察原始物体一般。在目前全息显示研究中，相位恢复是关注的焦点之一。另外针对当下关注度较高的头戴显示器，近些年提出的多焦面三维显示技术也是可单眼观看的，拥有较为准确深度信息的显示技术。 本文针对这两种三维显示技术，分别对全息内容（相位）的获取和多焦面技术在头戴显示器上的应用展开研究。本文的主要内容及成果如下： （1）提出了一种基于强度传输方程和迭代角谱传播算法的混合算法。该算法利用强度传输方程快速恢复得到物体的相位图像，用此相位分布作为迭代的初始相位，在两个离焦面及焦面之间传输，迭代过程中只改变振幅而不变相位，在一定迭代次数后，相位项将越来越接近真实相位分布，精度得到提升。仿真和实验均表明，与单独强度传输方程恢复的相位分布相比，混合算法在大离焦量下恢复的相位精度更高，且适用的离焦量范围更广。 （2）设计了一种基于头戴显示器的多焦面显示光学系统。首先根据多焦面显示原理，利用ZEMAX软件对现有的器件和液体透镜进行建模，并优化得到最佳的位置参数。然后根据参数搭建实验平台，实现了两个焦面上的图像显示。最后利用微软公司Visual Studio软件的MFC功能设计控制液体透镜动态切换电压的界面，并在三个不同间隔时间下测试显示情况。结果表明，目前的系统切换速率还不足以达到无闪烁显示，当低于系统的最高切换频率时，系统可呈现准确的深度信息。; With the rapid development of display technology, although the two-dimensional display technology has become increasingly mature, and applied in all aspects of life, but people cannot be satisfied with this, and they are more inclined to three-dimensional display with accurate depth-cue as the real world. Although the current three-dimensional display has made good progress, because of the current technology still lead to visual fatigue, depth perception errors, accommodation-convergence conflict and other issues, people still have higher expectations of three-dimensional display, hoping to use the naked eye or monocular to see three-dimensional images, and can accurately obtain the information of depth. So far, the holographic display is the most ideal method for three-dimensional display. Holographic display by acquiring and recovering the object's three-dimensional information (amplitude and phase), restoring the original object light waves. In the current holographic display study, phase retrieval is one of the focuses. In addition to the current high attention for the Head-Mounted Display (HMD), multi-focal plane approach is also a real 3D display method, with more accurate depth perception. In this paper, the two kinds of three-dimensional display technology, holographic content acquisition and multi-focal plane approach on the head-mounted display, are studied respectively. The main contents and achievements of this paper are as follows: (1) A hybrid algorithm based on transport of intensity equation and iterative angular spectrum propagation algorithm is proposed. The algorithm uses the transport of intensity equation to recover the phase image of the object quickly and then uses this phase image as the initial phase of the iteration. During the transmission between the planes, only change the amplitude, after a certain number of iterations, the phase accuracy is improved. Compared with the phase recovered by the transport of intensity equation alone, the hybrid algorithm has higher accuracy of phase recovery at both the simulation and the experiment. (2) A multi-focal plane optical system used on the head-mounted display is designed. According to the multi-focal plane approach, first, ZEMAX is used to model the existing devices and liquid lenses, and the optimal position parameters are optimized. Set up experimental platform, and images are clear on two focal plane. Using the MFC function of Microsoft Visual Studio to design the interface to control the dynamic switching voltage of the liquid lens and test the display at three different time intervals. The results show that the current system switching rate is not enough to achieve flicker-free display, when the system below the maximum switching frequency, the system can present accurate depth-cue.
学科主题	光学工程
内容类型	学位论文
源URL	[http://ir.siom.ac.cn/handle/181231/30946]
专题	中国科学院上海光学精密机械研究所
作者单位	中国科学院上海光学精密机械研究所
推荐引用方式 GB/T 7714	郭怡明. 具有准确空间信息的三维显示技术的研究[D].

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