Sound recovery via intensity variations of speckle pattern pixels selected with variance-based method

	Sound recovery via intensity variations of speckle pattern pixels selected with variance-based method
	Zhu, Ge; Yao, Xu-Ri; Qiu, Peng; Mahmood, Waqas; Yu, Wen-Kai; Sun, Zhi-Bin; Zhai, Guang-Jie; Zhao, Qing; Zhao, Q (reprint author), Beijing Inst Technol, Ctr Quantum Technol Res, Sch Phys, Beijing, Peoples R China.; Yao, XR (reprint author), Chinese Acad Sci, Key Lab Elect & Informat Technol Space Syst, Natl Space Sci Ctr, Beijing, Peoples R China.
刊名	OPTICAL ENGINEERING
	2018
卷号	57 期号:2 页码:26117
关键词	Sound Recovery Laser Speckle Patterns Intensity Variation High-speed Camera
ISSN号	0091-3286
英文摘要	In general, the sound waves can cause the vibration of the objects that are encountered in the traveling path. If we make a laser beam illuminate the rough surface of an object, it will be scattered into a speckle pattern that vibrates with these sound waves. Here, an efficient variance-based method is proposed to recover the sound information from speckle patterns captured by a high-speed camera. This method allows us to select the proper pixels that have large variances of the gray-value variations over time, from a small region of the speckle patterns. The gray-value variations of these pixels are summed together according to a simple model to recover the sound with a high signal-to-noise ratio. Meanwhile, our method will significantly simplify the computation compared with the traditional digital-image-correlation technique. The effectiveness of the proposed method has been verified by applying a variety of objects. The experimental results illustrate that the proposed method is robust to the quality of the speckle patterns and costs more than one-order less time to perform the same number of the speckle patterns. In our experiment, a sound signal of time duration 1.876 s is recovered from various objects with time consumption of 5.38 s only. (C) 2018 Society of Photo-Optical Instrumentation Engineers (SPIE).
语种	英语
资助机构	National Science Foundation of China [11675014] ; Ministry of Science and Technology of China [2013YQ030595-3] ; National Natural Science Foundation of China [61274024, 61474123] ; National Key Research and Development Plan [2016YFE0131500]
内容类型	期刊论文
源URL	[http://ir.nssc.ac.cn/handle/122/6206]
专题	国家空间科学中心_空间技术部
通讯作者	Zhao, Q (reprint author), Beijing Inst Technol, Ctr Quantum Technol Res, Sch Phys, Beijing, Peoples R China.; Yao, XR (reprint author), Chinese Acad Sci, Key Lab Elect & Informat Technol Space Syst, Natl Space Sci Ctr, Beijing, Peoples R China.
推荐引用方式 GB/T 7714	Zhu, Ge,Yao, Xu-Ri,Qiu, Peng,et al. Sound recovery via intensity variations of speckle pattern pixels selected with variance-based method[J]. OPTICAL ENGINEERING,2018,57(2):26117.
APA	Zhu, Ge.,Yao, Xu-Ri.,Qiu, Peng.,Mahmood, Waqas.,Yu, Wen-Kai.,...&Yao, XR .(2018).Sound recovery via intensity variations of speckle pattern pixels selected with variance-based method.OPTICAL ENGINEERING,57(2),26117.
MLA	Zhu, Ge,et al."Sound recovery via intensity variations of speckle pattern pixels selected with variance-based method".OPTICAL ENGINEERING 57.2(2018):26117.