基于广义优先搜索的位相展开算法

二维位相展开（phase unwrapping)是位相检测技术中的一个重要组成部分和技术难点。本文设计了一种基于广度优先搜索（breadth-first search)遍历位相图策略的位相展开算法。算法的一个显著优点在于能够自动地绕过可疑的非相容点，避免对这些点进行位相展开时产生的误差影响以后的区域，因此尤其适用于处理包含空洞和环状噪声区域的相位图。文中还用该算法对实际的位相图进行了处理，得到了比较理想的结果。

Phase Unwrapping Algorithm Based on Breadth-first Searching

To improve the technique for two dimensional phase unwrapping,which is widely used in optical interferometry, a new algorithm based on the strategy of breadth first searching on the phase map processed is proposed. The algorithm is more effective and especially suitable for use on phase maps with large noise area. To show the application of the new algorithm, a phase map from Mach Zehnder interferometer is processed by it. The result is satisfactory.