复杂三维场景数字全息图隐藏面问题研究

从数字全息图制作原理出发，分析了隐藏面对数字全息图再现像的影响，得出在制作复杂场景数字全息图时必须进行消隐.在此基础上提出了一种消隐方法，通过寻找连接全息面上每一采样点与场景中每一采样点之间的虚拟光线与场景的交点中到全息面距离最短的交点集来消隐.最后给出了这种方法的原理和计算机模拟结果.

Research on Hidden Surface of Complex Scenes in Digital Hologram

The computer-generated hologram called digital hologram as well, which is fully digitized, is laid store by people as a kind of new 3D display technology. But compared with optical hologram, hidden surface of scene is a special problem of digital hologram. This problem doesn't be solved well before. To solve it, first the decay of reconstructed image quality caused by hidden surfaces is analysed based on the theory of digital hologram. The conclusion is drawed which is the hidden surfaces must be removed when computing holograms of complex scenes. Secondly a method to remove hidden surfaces is presented, which is to find the collection of nearest intersection points on virtual rays connecting every sample point of scene to that of hologram. Finaly the results of simulation are presented.High quality digital hologram will be made when the method presented employed.