A full resolution autostereoscopic 3D display based on polarizer parallax barrier

A full resolution autostereoscopic three-dimensional （3D） display prototype is developed. It is composed of a time division thin film transistor liquid crystal display panel with an optical controlled birefringence liquid crystal polarization switch and a polarizer parallax barrier. Fast driving circuits operating at 120-Hz frame rate are fabricated. The 3D images on the display have the same resolution as the corresponding two-dimensional images, which is significantly different from conventional parallax barrier autostereoscopic 3D displays having degraded 3D image resolution.     

平行摄像机阵列移位法获取视差图像的研究

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.     

Elimination of vertical parallax in multi-view parallax images

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.     

立体显示用柱面透镜光栅的设计

分析了柱面透镜光栅的单柱面透镜的光传输特性,进而推导出柱面透镜光栅的曲率半径、节距和厚度等重要参量的计算公式.根据这些理论公式,为15英寸柱面透镜光栅自由立体显示器设计了柱面透镜光栅的参量,通过应用光学软件ASAP模拟该立体显示器的立体视区分布,得出该立体显示器能显示良好立体图像,从而验证了理论的正确性.     

Crosstalk reduction in multi-view autostereoscopic three-dimensional display based on lenticular sheet

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,...