基于向量变换的包裹相位场预处理与信息完整性探讨

CORC > 上海光学精密机械研究所 > 中国科学院上海光学精密机械研究所 > 高功率激光物理国家实验室

	基于向量变换的包裹相位场预处理与信息完整性探讨
	李永国 ; 朱健强
刊名	光学学报
	2007
卷号	27 期号:12 页码:2169
关键词	图像处理光学检测信号处理向量滤波功率谱密度 image processing optical testing signal processing vector filtering power spectral density
ISSN号	0253-2239
其他题名	Discussion of Wrapped Phase-Field Pretreatment Based on Vector Transformation and Its Information Integrity
中文摘要	针对包裹相位场在消除噪声的特别要求,提出了对包裹相位场预处理的向量滤波方法。理论分析了功率谱密度和向量变换的滤波思想。仿真实验研究了滤波模板的大小对滤波效果的影响,比较了在同样模板的选取下向量滤波方法与二次均值滤波法的滤波效果,分析了向量滤波方法与二次均值滤波法的功率谱密度分布。结果表明,相比二次均值滤波法,向量滤波法在降噪的同时,相位图依然清晰,它的功率谱密度分布没有明显变化,预处理后频谱信息的丢失远小于二次均值滤波。向量滤波法在提高信噪比的同时,信息的完整性得到较好保证。; For special requests of eliminatng noise in wrapped phase field, a vector filtering method of wrapped phase field pretreatment is proposed. Power spectral density and the filtering behavior of vector transformation are analyzed theoretically. Through simulation, the size of the filter template affecting on filtering imaging is investigated, the filtering effects of second mean filtering method and vector filtering method at the same size of filter template is comparised, the curve distribution of power spectral density of second mean filtering method and vector filtering method is analyzed. It shows the phase image filtered by vector filtering method which can decrease noise is still clean, the distribution of power spectral density has no change, the spectral information loss after pretreatment though vector filtering was smaller than second mean filtering. The vector filtering method improves signal-to-noise ratio, furthermore the information integrity still obtains a better guarantee at the same time.
分类号	TP202+.2
收录类别	EI
语种	中文
公开日期	2009-09-18
内容类型	期刊论文
源URL	[http://ir.siom.ac.cn/handle/181231/3136]
专题	上海光学精密机械研究所_高功率激光物理国家实验室
推荐引用方式 GB/T 7714	李永国,朱健强. 基于向量变换的包裹相位场预处理与信息完整性探讨[J]. 光学学报,2007,27(12):2169, 2174.
APA	李永国,&朱健强.(2007).基于向量变换的包裹相位场预处理与信息完整性探讨.光学学报,27(12),2169.
MLA	李永国,et al."基于向量变换的包裹相位场预处理与信息完整性探讨".光学学报 27.12(2007):2169.