体扫描三维显示系统的关键技术研究

发布时间：2018-03-22 09:52

本文选题：体扫描三维显示　切入点：架构　出处：《华东师范大学》2013年硕士论文　论文类型：学位论文

【摘要】：当今社会,人们已习惯用光与影来记录与展示信息,信息显示已成为各个领域不可或缺的生存发展手段之一。长久以来,由于技术发展的局限性,在电影、电视、广告屏等传播媒介中,人们被局限于二维画面。而人类所生存的世界是一个立体空间,所观察到的事物具有高度、宽度和深度三个维度。相较于二维影像,三维影像与人类现实生活中习惯的场景更为一致,能带给人们更逼真的感知与体验。因此,随着微电子、光学、计算机等信息技术的飞速发展,在人们强大需求的推动下,三维显示技术成为当今的研究热点。体扫描三维显示系统作为三维显示技术实现的一种形式,它不但提供心理景深,还能呈现真实物理景深,是目前三维显示技术研究中的重要方向。本文以“三维体扫描显示系统”课题的研究为背景,以提高“基于彩色LED阵列旋转的体三维显示系统”的分辨率、实时性,以及动态性能为目标,主要围绕系统架构定义、显示控制模块设计、动态显示方案拟定以及系统稳定性四个方面展开。在分析系统工作原理的基础上,围绕本文提出的架构定义,介绍了系统三维显示装置的功能结构。重点讨论了其中显示控制层模块的设计,提出并实现了基于Flash型FPGA的显示控制模块设计方案,同时引出基于动态分配调色板、兼顾传输数据位宽与色彩细腻度的真彩显示方案。在动态显示方案拟定过程中,首次以“核心体处理单元”所处位置来定义体扫描三维显示系统,在分析本文综述的“前端体处理系统”所存在问题的基础上,提出了分布的嵌入式体处理思想,为实现动态实时显示提供了新途径,而基于三角形网格的“电子帧像素集”生成算法的提出也为嵌入式体处理方案的实现打下了基础。从机械结构、信号传输以及电子帧扫描与机械扫描同步三个方面分析了系统的稳定性、可靠性问题,给出了相应的优化方案。
[Abstract]:Nowadays, people are used to record and display information with light and shadow. Information display has become one of the indispensable means of survival and development in all fields. For a long time, because of the limitations of technological development, in movies and television, In media such as advertising screens, people are confined to two-dimensional images. The world in which human beings live is a three-dimensional space, and the objects observed have three dimensions: height, width and depth. Three-dimensional images are more consistent with the familiar scenes in human real life, and can bring people more realistic perception and experience. Therefore, with the rapid development of information technology such as microelectronics, optics, computers and so on, driven by the strong demand of people, As a form of 3D display technology, it not only provides psychological depth of field, but also presents real physical depth of field. It is an important direction in the research of 3D display technology. Based on the research of "3D volume scan display system", this paper aims at improving the resolution, real-time and dynamic performance of "volume 3D display system based on color LED array rotation", which is mainly defined around the system architecture. Display control module design, dynamic display scheme formulation and system stability four aspects. Based on the analysis of the working principle of the system, the functional structure of the system 3D display device is introduced around the definition of the architecture proposed in this paper. The design of display control layer module is discussed in detail, and the design scheme of display control module based on Flash type FPGA is put forward and realized. At the same time, the design of display control module based on dynamic distribution palette is introduced. A true color display scheme that takes into account the bit width and color fineness of the transmission data. In the process of developing dynamic display scheme, the position of "core volume processing unit" is used for the first time to define the three-dimensional display system of volume scanning. Based on the analysis of the problems existing in "front-end volume processing system", which is summarized in this paper, The idea of distributed embedded volume processing is proposed, which provides a new way to realize dynamic real-time display. The algorithm of "electronic frame pixel set" generation based on triangle mesh also lays a foundation for the realization of embedded volume processing scheme. The stability and reliability of the system are analyzed from the aspects of mechanical structure, signal transmission and synchronization of electronic frame scanning and mechanical scanning, and the corresponding optimization scheme is given.
【学位授予单位】：华东师范大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TN27

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