强激光与粒子束2012，Vol.24Issue(10)：2311-2317,7.DOI:10.3788/HPLPB20122410.2311
欠采样包裹相位图的展开算法
Unwrapping algorithm of under-sampled wrapped-phase map
摘要
Abstract
The existing phase-unwrapping algorithms are analyzed and classified, aiming at solving the problem of under-sampling in wrapped-phase map. The least-square algorithm based on lateral shearing interferometry is studied. Four common phase-unwrapping algorithms are applied to the wrapped-phase map of Lygodium japonicum cell, which is obtained by image-plane digital holography recorded with spherical reference waves. The results show that the least-square algorithm based on discrete cosine transform and the pre-condition conjugate grads algorithm result in transfer of phase-unwrapping error in the under-sampled area; the quality-guided path following algorithm results in pull phenomenon and island area because of the residual point without recognition, and its processing is slow; the least-square algorithm based on lateral shearing interferometry has the best effect for dealing with the under-sampled wrapped-phase map, and its processing is the fastest.关键词
像面数字全息显微/相位重建/欠采样/横向剪切/最小二乘法Key words
digital image-plane holographic microscopy/ phase reconstruction/ under-sampling/ lateral shearing/ Seast-square algorithm分类
数理科学引用本文复制引用
王华英,张志会,赵宝群,熊南燕,朱巧芬,郭中甲,刘飞飞..欠采样包裹相位图的展开算法[J].强激光与粒子束,2012,24(10):2311-2317,7.基金项目
国家自然科学基金项目(61077001,61144005) （61077001,61144005）
河北省自然科学基金项目(F2008000750,F2010001038) （F2008000750,F2010001038）
河北省科技支撑计划项目(09277101D) （09277101D）
河北省教育厅科学研究重点项目(ZH2011241) （ZH2011241）
