【作者】 杨勇；

【导师】 王丁；

【作者基本信息】 重庆大学 ， 光学工程， 2007， 硕士

【摘要】 本文采用两种方法来制真彩色体视全息图:一种是用三色光栅照相机拍摄景物的两张视差照片,然后用单色激光器经二次曝光全息记录制成一张真彩色体视全息图,在普通白炽灯照明下可再现真彩色体视全息像。该方法制作过程简单,减少了散斑噪音,消除了彩色全息像的色差,得到的全息像清晰明亮,色彩真实,立体感强。另一种办法是用液晶显示屏(LCD)作为掩模来制作真彩色体视全息图。利用图象处理软件将由数码相机或由计算机的图形软件产生2D、3D彩色图象分成红、绿、蓝三色输入LCD液晶屏作为掩模,解决了传统方法中三分色片对位困难和制作分色片手续繁琐问题。本文对这两种方法的理论和实验作了深入的分析介绍,设计了实验室全息记录方法,得到质量好的真彩色体视全息图。更多还原

【Abstract】 Two methods of making a true color stereoscopic hologram are presented in this paper. Two parallactic films of a nature color scene are obtained with a three color grating camera. With the films, a true color stereoscopic hologram can be made with one–wavelength laser through two exposure recordings. A true color stereoscopic scene image can be reconstructed from the hologram as it is illuminated by a white light source. Compared with other methods, this method is simpler in operation. It largely decreases the scattering noise and gets rid of chromatic aberration of the reconstructed image. It can produce a clearer and brighter achromatic aberration stereoscopic color image. Other kind of method of making a true color stereoscopic hologram with LCD liquid crystal screen is presented in this paper. Making use of the image processing software the color image producing by digital camera or computer will be divided into red、green and blue three colors images and input to the LCD liquid crystal screen to be used as the masks. This method resolves the two problems. One is the contraposition of three dividing colors films in traditional method and the other is tedious procedure to creating dividing colors films. In addition to describe the principles of these two methods. We have fabricated some true color stereoscopic holograms in the lab in order to validate the feasibility of the method. Qualified true color stereoscopic holograms are obtained.更多还原