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Phase unwrapping by region growing

机译:相依地区成长展开

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The phase unwrapping problem consists in singling out an integer field whose values make the original wrapped phase field continuous. Even if in principle the problem is very simple—a direct integration of the wrapped phase field suffices—in the presence of noise and/or undersampling, the solution is no longer unique and the direct integration methods usually fail to find an acceptable solution. This work presents what is to my knowledge a new unwrapping algorithm that attempts to find the solution by iteratively merging and shifting the continuous areas until a single region is built or no further moves are possible. Unlike the tile methods, the regions can have arbitrary shape and need not be single-connected so that, by removing the predefined size and shape constraint, the algorithm is very robust. The greater freedom of the regions' shape makes their handling more problematic, so that certain implementation aspects, critical to algorithm performance, are presented here. Some unwrapping examples are also presented and memory requirements are discussed.
机译:相位展开问题包括单出一个整数字段,该整数字段的值使原始包裹的相位字段连续。即使原则上问题很简单(包裹相位场的直接积分就足够了),在存在噪声和/或欠采样的情况下,解决方案也不再是唯一的,直接积分方法通常无法找到可接受的解决方案。据我所知,这项工作提出了一种新的展开算法,该算法试图通过迭代合并和移动连续区域直到建立单个区域或无法进一步移动来找到解决方案。与图块方法不同,这些区域可以具有任意形状,并且不必进行单连接,因此,通过删除预定义的大小和形状约束,该算法非常健壮。区域形状的更大自由度使它们的处理更成问题,因此此处介绍了对算法性能至关重要的某些实现方面。还提供了一些解包示例,并讨论了内存需求。

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    《Applied optics》 |2003年第14期|共8页
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  • 正文语种 eng
  • 中图分类 光学;
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