Identifying the phase discontinuities in the wrapped phase maps by a classification framework | |
Ashfaq Ahmad1,2,3; Yanting Lu1,2 | |
刊名 | Optical Engineering |
2016-03 | |
卷号 | 55期号:3页码:033104-1-8 |
关键词 | phase discontinuity phase unwrapping feature extraction naive Bayes classifier |
英文摘要 |
Identifying phase discontinuity locations is a necessary and complex step in the phase unwrapping process, and it becomes more challenging when dealing with noisy wrapped phase maps that are produced through shearography or other speckle-based interferometry methods.
Recently, the task of identifying phase discontinuities has been formulated into a two-class classification problem, where the phase discontinuities are identified by a complex neural network trained on plenty of image patches taken from wrapped phase maps.
A simple but efficient classification framework is proposed for the phase discontinuities identification task. Six features are first designed to describe the characteristics of discontinuous and continuous pixels. Then, the naive Bayes classifier, working on these features, is employed as the classifier of our framework. Finally, a thinning procedure is performed on the classification results to get the one-pixel-width discontinuity location map which can be used for further phase unwrapping. The experiments on simulated wrapped phase maps are performed to validate the performance of the proposed approach. The experimental results show that the proposed approach can identify phase discontinuities in the wrapped phase maps well and has more robust performances when the signal-to-noise ratios of the phase maps are low. |
学科主题 | 天文技术与方法 |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://ir.niaot.ac.cn/handle/114a32/1354] |
专题 | 南京天文光学技术研究所_中科院南京天光所知识成果_期刊论文 南京天文光学技术研究所_中科院天文光学技术重点实验室_期刊论文 |
作者单位 | 1.南京天文光学技术研究所 2.中国科学院天文光学重点实验室 3.中国科学院大学 |
推荐引用方式 GB/T 7714 | Ashfaq Ahmad,Yanting Lu. Identifying the phase discontinuities in the wrapped phase maps by a classification framework[J]. Optical Engineering,2016,55(3):033104-1-8. |
APA | Ashfaq Ahmad,&Yanting Lu.(2016).Identifying the phase discontinuities in the wrapped phase maps by a classification framework.Optical Engineering,55(3),033104-1-8. |
MLA | Ashfaq Ahmad,et al."Identifying the phase discontinuities in the wrapped phase maps by a classification framework".Optical Engineering 55.3(2016):033104-1-8. |
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