计算全息图的球面重现  

Spherical Surface Reconstruction of Computer Generated Hologram

作　　者：丁大为[1] 韦穗[1] 

机构地区：[1]安徽大学计算智能与信号处理重点实验室,合肥230039

出　　处：《计算机工程与应用》2005年第2期66-68,共3页Computer Engineering and Applications

基　　金：国家自然科学基金项目资助(编号:60143003)

摘　　要：该文研究重现于球面的计算全息图(CGH)的生成和重现。当用平面波照射傅里叶全息图时,所重现的图像一般显示在平面上。该文利用坐标变换方法实现显示于球面的二维图像的计算全息图的生成,并由所生成全息图得到原始图像,从而实现整个全息记录和重现过程的计算机模拟。二维图像重现于球面实际上产生了三维显示,因此该文所提到的方法在从计算全息图重现三维图像方面起到了重要的作用。This paper researches the generation and reconstruction of Computer-generated hologram(CGH)which displays on spherical surface.Usually the reconstructed image is located on a planar plane when the Fourier hologram is illumi-nated by a plane wave.In this paper,we realize the generation of Computer-generated hologram of2-D image which displays on spherical surface using coordinate transformation method and then reconstruct the original image from gen-erated CGH,therefore,realize the computer simulation of holographic record and reconstruct process.As reconstruction of a2-D image on a spherical surface actually creates a three dimensional(3-D)displays,this technique may play an im-portant role in attempts at reconstruction of3-D images from CGH's.

关 键 词：计算全息(CGH) 傅里叶全息图 坐标变换 数字全息 

分 类 号：O438[机械工程—光学工程]