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为保证二维相位展开的正确性和快速性,分析了现有路径相关二维相位展开算法的优缺点,提出了一种基于质量线导向的二维相位展开新方法,并对新方法进行了综合对比实验和理论分析。新方法定义了相位质量因子及相位方向因子,采用双阈值和非极大值抑制的方式有方向性和有选择性地生成了一种新的枝切线,对生成的枝切线进行平衡处理,以处理后的枝切线为导向进行二维相位展开。理论分析和实验结果表明,新方法综合了现有路径相关二维相位展开方法的优点,速度快、稳定性高,生成的枝切线位置准确,很好地截断了相位突变区域,保证了二维相位展开结果的正确性,具有广泛的适用性。
In order to ensure the correctness and rapidity of two-dimensional phase unwrapping, the advantages and disadvantages of the existing two-dimensional phase unwrapping algorithm are analyzed. A new two-dimensional phase unwrapping method based on mass-line orientation is proposed. Comprehensive comparative experiment and theoretical analysis. The new method defines the phase quality factor and the phase direction factor. A new branch tangential line is generated in a directional and selective manner by means of double threshold and non-maximum suppression. The tangent lines generated are balanced with The processed branch tangents are oriented for two-dimensional phase unwrapping. The theoretical analysis and experimental results show that the new method combines the advantages of the existing two-dimensional path-dependent phase unwrapping method with high speed and high stability. The generated tangent lines have accurate position and well cut off the phase mutation area, The correctness of phase unwrapping results has wide applicability.