大尺度真三维显示系统构建与优化
发布时间：2018-08-12 13:29
【摘要】：三维显示技术是未来显示技术发展的重要方向之一,它通过让观察者获取到二维显示技术所不具有的深度信息,从而产生更真实的视觉感受。1996年来自美国的学者M. Levoy和P. Hanrahan提出了三维场景的光场绘制方法,催生了基于光场重构的三维显示技术蓬勃发展。其原理是通过精确再现三维物体的空间光场分布来实现真实空间三维显示,具备了裸眼、全景、观察者数目不受限制等诸多优点,是一种优秀的三维显示技术。本文依据计算机图形学和光场重构的相关理论,详尽分析了圆柱形显示空间光场重构方案,论述了基于多投影式的光场重构技术在不同空间位置的图像映射关系。并以此为基础,构建了一套大尺度真三维显示系统,介绍了系统的实现方案及硬件参数,最后展示了系统的实际显示效果。随着三维显示技术越发成熟,提高成像质量将会是下一步研究的主题。本文针对大尺度真三维显示系统实现过程中存在的亮度均匀性问题和多投影显示系统的校准方法进行了深入的讨论和研究。系统显示区域亮度均匀性问题主要是由多投影阵列排布引起的,本文提出了通过增加投影仪填补由于系统排布所造成的显示区域暗区,再结合前人所研究的集成光场三维显示的亮度校正方法,可以有效的提高系统的亮度均匀性。多投影显示系统中存在的手动校准难度大、校准精度低等问题,结合传统二维图像校准方法,本文创新性的提出了一种可适用于光场重构等投影式三维显示系统的自动图像校准方法。该方法基于光场重构原理,通过CCD相机拍摄,计算获取一系列空间图像映射关系,实现显示系统的图像自动校正功能。该方法广泛适用于基于多投影式的三维显示系统,是一种有效提高三维显示效果的新方案。论文的最后,对研究生期间工作进行系统的总结,并展望了今后的工作。
[Abstract]:3D display technology is one of the important directions of the future display technology. It allows the observer to obtain depth information that the two-dimensional display technology does not have. In 1996, American scholars M. Levoy and P. Hanrahan proposed a method of 3D scene rendering, which gave birth to the vigorous development of 3D display technology based on light field reconstruction. The principle is to accurately reproduce the spatial field distribution of three-dimensional objects to realize the three-dimensional display of real space, with the naked eye, panoramic, unlimited number of observers and many other advantages, it is an excellent three-dimensional display technology. Based on the theory of computer graphics and light field reconstruction, this paper analyzes the reconstruction scheme of cylindrical display space light field in detail, and discusses the image mapping relationship of light field reconstruction technology based on multi-projection in different space. On the basis of this, a large scale true 3D display system is constructed, and the realization scheme and hardware parameters of the system are introduced. Finally, the actual display effect of the system is shown. As 3D display technology becomes more and more mature, improving imaging quality will be the next research topic. In this paper, the problem of luminance uniformity in the realization of large scale true 3D display system and the calibration method of multi-projection display system are discussed and studied in depth. The luminance uniformity of the system display area is mainly caused by the arrangement of multi-projection arrays. In this paper, we propose to fill the dark area of the display area caused by the arrangement of the system by adding projectors. Combined with the luminance correction method of integrated light field 3D display, the brightness uniformity of the system can be improved effectively. In the multi-projection display system, the manual calibration is difficult and the calibration accuracy is low, combined with the traditional two-dimensional image calibration method, In this paper, an automatic image calibration method is proposed, which can be applied to the reconstruction of light field and the projection 3D display system. Based on the principle of light field reconstruction, a series of spatial image mapping relationships are calculated and acquired by CCD camera, and the automatic image correction function of the display system is realized. This method is widely used in 3D display system based on multi-projection and is a new scheme to improve the effect of 3D display. At the end of the thesis, the work of postgraduates is summarized systematically, and the future work is prospected.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TP391.41;TN27
本文编号：2179198
[Abstract]:3D display technology is one of the important directions of the future display technology. It allows the observer to obtain depth information that the two-dimensional display technology does not have. In 1996, American scholars M. Levoy and P. Hanrahan proposed a method of 3D scene rendering, which gave birth to the vigorous development of 3D display technology based on light field reconstruction. The principle is to accurately reproduce the spatial field distribution of three-dimensional objects to realize the three-dimensional display of real space, with the naked eye, panoramic, unlimited number of observers and many other advantages, it is an excellent three-dimensional display technology. Based on the theory of computer graphics and light field reconstruction, this paper analyzes the reconstruction scheme of cylindrical display space light field in detail, and discusses the image mapping relationship of light field reconstruction technology based on multi-projection in different space. On the basis of this, a large scale true 3D display system is constructed, and the realization scheme and hardware parameters of the system are introduced. Finally, the actual display effect of the system is shown. As 3D display technology becomes more and more mature, improving imaging quality will be the next research topic. In this paper, the problem of luminance uniformity in the realization of large scale true 3D display system and the calibration method of multi-projection display system are discussed and studied in depth. The luminance uniformity of the system display area is mainly caused by the arrangement of multi-projection arrays. In this paper, we propose to fill the dark area of the display area caused by the arrangement of the system by adding projectors. Combined with the luminance correction method of integrated light field 3D display, the brightness uniformity of the system can be improved effectively. In the multi-projection display system, the manual calibration is difficult and the calibration accuracy is low, combined with the traditional two-dimensional image calibration method, In this paper, an automatic image calibration method is proposed, which can be applied to the reconstruction of light field and the projection 3D display system. Based on the principle of light field reconstruction, a series of spatial image mapping relationships are calculated and acquired by CCD camera, and the automatic image correction function of the display system is realized. This method is widely used in 3D display system based on multi-projection and is a new scheme to improve the effect of 3D display. At the end of the thesis, the work of postgraduates is summarized systematically, and the future work is prospected.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TP391.41;TN27
【参考文献】
相关期刊论文 前1条
1 林远芳,刘旭,刘向东,张晓洁,徐椌;基于旋转二维发光二极管阵列的体三维显示系统[J];光学学报;2003年10期
，本文编号：2179198
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