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一种改进的解包算法在细胞相位测量上的应用

The Application of an Improved Phase Unwrapping Method in Measuring the Phases of Cells

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【作者】 崔俊宏王翰林吕晓旭钟丽云

【Author】 CUI Jun-hong;WANG Han-lin;LU Xiao-xu;ZHONG Li-yun;South China Normal University Laboratory of Nanophotonic Functional Materials and Devices;

【机构】 华南师范大学广东省微纳光子功能材料与器件重点实验室

【摘要】 针对传统相位解包裹算法在生物细胞相位重构上遇到的困难,本文提出了一种改进的质量图导向解包算法。该方法以质量图导向法为基础,通过对质量图设置阈值来识别解包后可能出现异常跳变的像素点,然后对初始解包后的有效相位值分别进行横向和纵向一维多项式拟合,最后将异常像素点的相位值用拟合值的平均值进行代换即可重构细胞的相位。模拟结果表明该方法具有较高的解包精度,实验结果验证了该方法在实际测量中的可行性。

【Abstract】 An improved quality-guided phase unwrapping method is presented in order to reconstruct the phases of biological cells,which is not be unwrapped by traditional methods. The improved method is based on quality-guided phase unwrapping method. Firstly,some abnormal pixels can be identified by setting threshold for the quality map. Then one-dimensional polynomial fitting algorithm is used to fit the effective pixels horizontally and vertically. At last,the unwrapped phases of abnormal pixels can be replaced by the average of the fitted values. The simulation result shows that the method has higher precision. Also,the feasibility is verified by experiment results.

【关键词】 光学相位解包质量图多项式拟合细胞
【Key words】 OpticsPhase unwrappingQuality mapPolynomial fittingCells
【基金】 国家自然科学基金资助项目(61275015、61177005、61078064)
  • 【分类号】TP391.41
  • 【被引频次】3
  • 【下载频次】78
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