Author Affiliations
Abstract
1 School of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China
2 State Key Laboratory of Fundamental Science on Synthetic Vision, Sichuan University, Chengdu 610065, China
A method to reduce crosstalk in multi-view autostereoscopic three-dimensional (3D) displays based on the lenticular sheet is proposed. Correcting the luminance values of each parallax image displayed on the display screen is employed. We analyze the causes of crosstalk. We deduce the formulas of crosstalk reduction according to the relationship between crosstalk coefficients of each parallax image observed through the lenticular sheet, luminance values of each parallax image displayed on the display screen, and luminance values of each parallax image observed through the lenticular sheet at each viewing position. Experimental results verify the effectiveness of the proposed method.
自由立体显示 柱面光栅 串扰 100.0100 Image processing 100.6890 Three-dimensional image processing Chinese Optics Letters
2011, 9(2): 021001
Author Affiliations
Abstract
1 School of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China
2 State Key Laboratory of Fundamental Science on Synthetic Vision, Sichuan University, Chengdu 610065, China
In three-dimensional displays, large vertical parallax in parallax images is disadvantageous to stereo vision due to the presence of visual fatigue. Based on the principle that homologous points in different parallax images correspond to the same object point, a method is proposed to eliminate the vertical parallax in multi-view parallax images. The coordinate mapping relationship between a standard parallax image and an awaiting rectification parallax image is established according to the coordinates of the image points of the rectangular calibration board vertices. Experiments are conducted, and results prove that the proposed method is reliable.
竖直视差 三维显示 多视点视差图像 100.6890 Three-dimensional image processing 150.6910 Three-dimensional sensing 330.1400 Vision - binocular and stereopsis Chinese Optics Letters
2010, 8(11): 1047
1 四川大学电子信息学院，四川成都 610065
2 四川大学视觉合成图形图像技术国防重点学科实验室，四川成都 610065
文章介绍了光栅式自由立体显示器的结构及原理，分析了影响其立体效果及性能的因素，如人眼调节和会聚特性、多视点技术、亮度及分辨率损失、串扰、2D／3D 切换及兼容性等，并简要介绍了相应的提高立体显示效果的方法。
自由立体显示 多视点技术 串扰 2D／3D切换及兼容 autostereoscopic display multi-view technology crosstalk 2D／3D switch and compatibility
四川大学 电子信息学院视觉合成图形图像技术国防重点学科实验室, 成都 610065
平行摄像机阵列移位法是一种摄像机阵列获取三维场景的视差图像的新方法.该方法在平行摄像机阵列法的基础上, 将获取的视差图像进行平移处理, 获得了立体显示所需的具有正、负水平视差的视差图像, 且这些视差图像没有楔形失真和垂直视差.该方法集中了会聚摄像机阵列法和平行摄像机阵列法两种常规方法各自的优点并摒弃了其缺点.实验证实, 所获取的视差图像在光栅式自由立体显示器上得到了三维场景的清晰逼真再现显示效果.
三维自由立体显示 平行摄像机阵列移位法 会聚摄像机阵列法 平行摄像机阵列法 Autostereoscopic display Parallel camera array with shift Toed-in camera array Parallel camera array
1 1.四川大学 电子信息学院,四川 成都 610065
2 2.四川大学 视觉合成图形图像技术国防重点学科实验室,四川 成都 610065
自由立体显示器的再现立体深度与视差图的视差大小有关系,而视差的大小与获取视差图时相机摆放方式密切相关。本文采用平行结构放置相机,通过设置相机间距使得拍摄到的视差图在相对平移后某一深度物点具有零视差,而另一深度物点具有所期望的视差。视差大小体现了再现立体深度大小,从而得到再现立体深度与相机间距间的定量关系。通过实验验证了推出关系的正确性。该研究结果可用于指导拍摄立体影像时相机的摆放,便于获得适当的视差图以达到最佳的立体显示效果。
自由立体显示 立体深度 视差图 相机摆放 stereoscopic display stereo depth parallax image layout of camera
提出了反映观察区域某一点是否是合适的立体观察点立体图像质量因子的概念.根据狭缝光栅自由立体显示器的结构和工作原理并应用几何光学知识,分析得出了立体图像质量因子的计算公式,并给出了立体显示器的立体图像质量因子的计算结果.通过定义立体图像质量因子的阈值,得到狭缝光栅自由立体显示器的立体可视区域.
显示技术 自由立体显示器 狭缝光栅 立体可视区域 立体图像质量因子
