摘要
提出了相位图去包裹的一种新的综合方法。首先建立了一个消除局部不连续点的模型,利用此模型可有效地消除包裹相位图中的不连续点,同时不会影响到其他正常点;在此基础上进行多方向去包裹运算,然后求其平均值,从而达到与路径无关的目的。给出了具体算法,并通过数值模拟和实验验证了该方法的有效性和可行性。结果表明,这种方法既具有很强的抗噪声能力,又能很好地处理较大面积的欠采样区域,并且具有较高的稳定性和处理效率。
A novel synthetical method for phase unwrapping is proposed in this paper. First an effective model to eliminate local branch points without influencing normal points is established. And then, by calculating the mean values of the unwrapped phase along multiple certain directions, the goal of path independence can be achieved. The feasibilities and the efficiencies of the approach are demonstrated by employing numerical simulations and experiments. It is shown that the proposed method also exhibits strong stability and high efficiency even in presence of serious noises and relatively large under sampled areas.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2006年第6期795-799,共5页
Chinese Journal of Lasers
基金
航空科学基金(02I53075)资助项目
关键词
全息
相位图去包裹
不连续点
路径无关
干涉测量
holography
phase unwrapping
branch point
path independence
interferometry
