| 自然光条件下基于Green函数的相位检索方法 |
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| 引用本文： | 程鸿,黄志祥,章权兵,张成,韦穗.自然光条件下基于Green函数的相位检索方法[J].电子学报,2014,42(2):236-242. |
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| 作者姓名： | 程鸿 黄志祥 章权兵 张成 韦穗 |
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| 作者单位： | 安徽大学计算智能与信号处理教育部重点实验室, 安徽合肥 230039 |
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| 基金项目： | 国家自然科学基金(No.61301296,No.61377006,No.61201396);高校博士点基金(No.20113401130001);安徽大学博士科研启动经费(No.33190219);安徽大学青年科学研究基金(No.kjqn1010) |
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| 摘 要： | 基于强度测量的确定性相位检索技术将光学与计算结合起来，通过求解强度传输方程恢复相位信息，理论和实验证明是相位检索的可行途径.论文将Green函数应用于强度传输方程的求解中，给出Neumann和Dirichlet边界条件下新的推导方法.该方法中，Green函数的偏导数是四维矩阵，随着图像分辨率的提高，直接求解所占的内存空间比较大，提出了数值化处理方法，并推广到自然光条件下的相位检索中.同时，搭建了图像数据采集光学平台.模拟和真实实验验证了算法的正确性和实用性.
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| 关 键 词： | 相位检索 Green函数 强度传输方程 Neumann边界 Dirichlet边界 |
| 收稿时间： | 2012-08-08 |
Phase Retrieval Method Based on Green Function in Natural Light Conditions |
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| CHENG Hong,HUANG Zhi-xiang,ZHANG Quan-bing,ZHANG Cheng,WEI Sui.Phase Retrieval Method Based on Green Function in Natural Light Conditions[J].Acta Electronica Sinica,2014,42(2):236-242. |
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| Authors: | CHENG Hong HUANG Zhi-xiang ZHANG Quan-bing ZHANG Cheng WEI Sui |
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| Affiliation: | Key Laboratory of Intelligent Computing and Signal Processing, Ahhui University, Hefei, Anhui 230039, China |
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| Abstract: | The transport of intensity equation is solved to recover the phase information through the combination of optics and calculation in the method of phase retrieval based on the intensity measurement.This method is proved to be a feasible way to obtain phase information theoretically and experimentally.A new derivation of Green function method in Neumann and Dirichlet boundary conditions is deduced.Because the partial derivative of Green's function is a four-dimensional matrix,large memory space will be occupied with the improvement of image resolution by solving the function directly.The numerical processing method is presented and extended to natural light conditions.At same time,an optical data collection platform is built.Simulation and actual experimental results verify this new phase retrieval method is reasonable and correct. |
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| Keywords: | phase retrieval Green function transport of intensity equation Neumann boundary Dirichlet boundary |
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