热传导方程在散斑条纹图相位提取中的应用  

Application of Heat Conduction Equation in Phase Extraction of Speckle Fringe Pattern

作　　者：张芳[1] 刘文耀[1] 李磊[1] 任丽[1] 袁理[1] 

机构地区：[1]天津大学精密仪器与光电子工程学院

出　　处：《光学学报》2008年第8期1475-1479,共5页Acta Optica Sinica

摘　　要：去除电子散斑干涉条纹图中的噪声是提取条纹图相位的关键问题。利用热传导方程去除条纹图中的噪声,定性和定量分析了该方法的滤波性能。在此基础上,进一步将MBO算法和热传导方程应用于条纹二值化和相位图平滑过程中,并成功地从单幅模拟条纹图中提取了条纹图的相位。研究结果表明,热传导方程能有效减少散斑条纹图中的噪声,改善二值条纹图的边界,进而获得准确的相位分布。Denoising is a key problem fringe. The heat conduction equation in phase extraction for electronic （HCE） is applied to denoise for speckle pattern interferometry （ESPI） ESPI fringe patterns and its filtering performance is analyzed qualitatively and quantitatively. Based on the HCE filtered result, MBO algorithm and HCE are applied further to binarization and phase map smoothing respectively. And the phase map of the fringe is extracted successfully from a single fringe pattern. The research shows that HCE can efficiently reduce the noise of speckle fringe pattern, improve the edge of binary fringe pattern, and perform phase recovery rather accurately.

关 键 词：电子散斑干涉 滤波 热传导方程 MBO算法 相位提取 

分 类 号：TN911.73[电子电信—通信与信息系统]