为了从大相位变化条纹中提取可靠的相位,采用Paul小波变换分析了相应条纹。在不同Paul小波参数条件下,通过分析大相位变化条纹在噪声影响下的相位提取过程,给出了相位提取过程中伸缩因子、小波阶数等参数的选择方法。模拟实验结果表明,通过调整Paul小波变换的参数,可有效提高含噪声的大相位变化变形条纹的相位提取的可靠性和速度。

In order to extract the reliable phases from fringe patterns with large phase variation, the corresponding fringes are analyzed by Paul wavelet transform. Under the condition of different Paul wavelet parameters, the phase extraction process from fringe patterns with large phase variation under noise is analyzed. The method for the selection of scaling factor, wavelet order, and other parameters in the phase extraction process is presented. The results of the simulation experiment indicate that the speed and reliability level of phase extraction from fringe patterns with large phase variation can be effectively improved by adjustment of the parameters for Paul wavelet transform.