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	Digital schlieren system for vertical visualization of internal waves
	Zhang Mingzhao ; Wang Boxiong ; Xu Zhaoting ; Luo Xiuzhi
	2010-05-10 ; 2010-05-10
关键词	Experimental/ flow visualisation image denoising lenses mirrors optical design techniques optical images schlieren systems Wiener filters/ digital schlieren system vertical internal wave visualization double-pass schlieren system lenses mirrors nonintrusive flow visualization large-field flow measurement virtual knife edge optical subsystem image acquisition subsystem additive noises Wiener filtering image denoising/ A4280N Schlieren devices A4230V Image processing and restoration A4780A Flow visualization and imaging A4280A Optical lenses and mirrors A4215E Optical system design B6135 Optical, image and video signal processing B7320W Level, flow and volume measurement B6140B Filtering methods in signal processing
中文摘要	A double-pass schlieren system using a combination of lenses and mirrors was designed for non-intrusive visualization and measurements of large-field flows such as internal waves. A virtual knife edge was used to replace the knife edge in traditional schlieren systems. The optical subsystem and the image acquisition subsystem were "seamlessly" integrated to continuously obtain digital schlieren images of flows in real-time. Additive noises in the images are effectively removed through repeated Wiener filtering with increasing local estimate neighborhoods for each pixel.
语种	中文 ; 中文
出版者	Tsinghua Univ. Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/24725]
专题	清华大学
推荐引用方式 GB/T 7714	Zhang Mingzhao,Wang Boxiong,Xu Zhaoting,et al. Digital schlieren system for vertical visualization of internal waves[J],2010, 2010.
APA	Zhang Mingzhao,Wang Boxiong,Xu Zhaoting,&Luo Xiuzhi.(2010).Digital schlieren system for vertical visualization of internal waves..
MLA	Zhang Mingzhao,et al."Digital schlieren system for vertical visualization of internal waves".(2010).

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