Double mode surveillance system based on remote audio-video signals acquisition

doi:10.1016/j.apacoust.2017.08.016

CORC > 长春光学精密机械与物理研究所 > 中国科学院长春光学精密机械与物理研究所

	Double mode surveillance system based on remote audio-video signals acquisition
	Lv, T.; Zhang, H. Y.; Yan, C. H.
刊名	Applied Acoustics
	2018
卷号	129 页码:316-321
关键词	LDV Laser hearing Voice enhancement Multimodal sensing enhancement laser Acoustics
ISSN号	0003-682X
DOI	10.1016/j.apacoust.2017.08.016
英文摘要	At present, remote human signature detection plays an increasingly important role in the field of anti-terrorism and security defense all around the world. In order to acquire remote, non-cooperative human signature signals, a double mode (audio/video) surveillance system is developed. The system mainly consists of a Laser Doppler Vibrometer (LDV), a pan-tilt-zoom (PTZ) camera and a theodolite. The LDV is used to acquire remote audio by detecting the vibration of the object (caused by the acoustic pressure). The PTZ camera is used to capture the video of the human body, and track the body when he/she moves, then analyze the image to select a proper vibrating target for LDV measurements. The theodolite is applied to control the orientation of the LDV. For the reason that many noise sources disturb the LDV-measured signals, such as laser speckle noises, environmental noises and the noises caused by sensor moving, a kind of speech enhancement technology (OM-LSA algorithm) is used to improve the intelligibility of the noisy voice signals detected by the LDV system. Experiments results indicated that the SNR and MOS of the LDV speech signal (the range is 150 m) can be increased by 135% and 26% respectively by using the speech enhancement technology, and the remote speech and video signals (the range is 30 m) can be obtained by the double-mode surveillance system. (C) 2017 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/60958]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Lv, T.,Zhang, H. Y.,Yan, C. H.. Double mode surveillance system based on remote audio-video signals acquisition[J]. Applied Acoustics,2018,129:316-321.
APA	Lv, T.,Zhang, H. Y.,&Yan, C. H..(2018).Double mode surveillance system based on remote audio-video signals acquisition.Applied Acoustics,129,316-321.
MLA	Lv, T.,et al."Double mode surveillance system based on remote audio-video signals acquisition".Applied Acoustics 129(2018):316-321.