一种新的质量图导引路径积分相位展开算法  

New path-following phase unwrapping algorithm based on quality-guided

作　　者：刘景峰[1] 李艳秋[1] 刘克[1] 

机构地区：[1]中国科学院电工研究所

出　　处：《光电工程》2007年第12期104-107,128,共5页Opto-Electronic Engineering

基　　金：863IC装备专项;973计划项目(2003CB716204)

摘　　要：本文首先简要介绍了路径积分相位展开方法的原理,针对路径积分法在处理轮廓不连续包裹相位图时存在的缺陷,提出了一种新的质量图用来导引相位展开。算法以包裹相位质量为依据,最先展开质量最高的像素,最后展开质量最低的像素,以防止相位展开误差的传播,把不可避免的相位展开误差局限在最小的区域内。实验结果表明,该算法计算速度快,能有效地处理轮廓不连续相位展开问题。The principle of the path-following phase unwrapping method is introduced briefly. In order to overcome the shortcomings in processing wrapped-phase containing phase jumps, a path-following phase unwrapping method based on a new quality-guided is proposed. The algorithm uses a quality map, which is an array of values to define the quality or goodness of each pixel of the given phase image, and unwraps the highest-quality pixels first and the lowest-quality pixels last to prevent error propagation. Unavoidable errors caused by unreliable phase data are confined to minimum area, and the integration path follows the high-quality pixels and avoids the low-quality pixels. Computer simulation shows that the proposed algorithm works successfully when complicated discontinuities exist in wrapped phase images.

关 键 词：相位展开 路径积分法 质量图 包裹相位 

分 类 号：TN911.73[电子电信—通信与信息系统]