摘要数字全息是结合了传统的光学全息术与现代化数字技术的一门新兴技术，它利用光电成像器件即CCD或CMOS进行图像数据的记录，并通过计算机快速运算实现数字图像的再现。随着现代化设备的发展和相关理论的进一步完善，数字全息得到了飞速发展和广泛应用。68052

本文围绕三维物体图像成像相位解包裹的问题，对数字全息进行了研究和分析，并利用一种快速傅里叶变换相位解包裹算法对三维物体图像实现了再现。文章首先介绍了全息术的历史背景、意义和进展；其次介绍了传统光学全息术的原理以及数字全息技术的原理；然后对快速傅里叶变换相位解包裹算法进行了详尽的说明；最后通过对三维数字全息图模拟，根据快速解包裹算法，完成了相位解包裹和再现程序的编写，得到了三维图像的再现像，并对实验结果进行了详细的分析。

毕业论文关键词  数字全息技术 三维图像再现 快速傅里叶变换算法 相位解包裹

毕业设计论文外文摘要

Title    Digital holographic three-dimensional imaging   studies based on phase unwrapping algorithm                                           

Abstract

Digital holography is a emerging technology combining traditional optical holography with  modern digital technologies, which uses optical imaging device CCD or CMOS to record image data, and obtains reproduced digital images by computers. With the development of modern electronic equipments and the further improvement of related theories, digital holography has been rapidly developed and widely applied. This paper focuses on the phase unwrapping problems of imaging of three-dimensional objects ,studies and analyzes digital holography. We obtain the reproduced image of the three-dimensional object by using a fast Fourier transform algorithm for phase unwrapping. The following several work have been done in the article. Firstly, The historical background, significance and development of holography are introduced. Secondly, The principle of optical holography and digital holography are introduced. Thirdly, The fast Fourier transform algorithm for phase unwrapping is introduced in detail. Finally, The three-dimensional simulation of digital hologram and the program of phase unwrapping are completed. The three-dimensional reconstructed image is obtained, and then the experimental results are analyzed in detail.

Keywords  Digital holography  Fast phase unwrapping  Dimensional image reproduction  Fourier transform algorithm

目   录

1  绪论 1

1.1  全息术概述 1

1.2  本文研究背景及意义 3

1.3  数字全息术及其相关技术的研究现状 4

1.4  本文研究内容 6

2  数字全息的原理 8

2.1  引言 8

2.2  数字全息的原理 8

2.3  数字全息的再现算法 12

2.4  相位解包裹原理 14

3  数字全息图的模拟和全息图的三维重现 18

3.1  全息图的实验光路设计及模拟 18

3.2  数字全息图的再现 19

结   论 22