激光等离子体干涉条纹的图像处理方法研究  

Image Processing of Interference Fringes of Laser-induced-plasma

作　　者：郑峰[1] 张宏超[1] 陆建[1] 倪晓武[1] 

机构地区：[1]南京理工大学理学院,江苏南京210094

出　　处：《南京理工大学学报》2009年第5期668-671,共4页Journal of Nanjing University of Science and Technology

基　　金：国家自然科学基金(60578015);教育部高校优秀青年教师奖励计划

摘　　要：为了研究激光等离子体内部电子密度的分布,采用计算机图像处理方法对激光等离子体干涉条纹进行处理。利用Mach-Zehnder干涉仪采集激光等离子体干涉图。对得到的激光等离子体干涉条纹进行滤波和锐化预处理,然后利用二值化和细化等方法对降噪后的激光等离子体干涉图进行处理,得到等离子体干涉条纹的细化图。最后对细化后的干涉条纹偏移量进行Abel逆变换,得到激光等离子体电子密度径向分布。In order to study the distribution of the electron densities in the laser-induced-plasma （ LIP）, the image-processing methods are utilized to pre-process the interference fringes of laser-induced-plasma. The interferograms of the LIP is obtained by Mach-Zehnder interferometer in experiment. The interference fringes of the LIP are pretreated by filtering and sharpening. In order to get the thinning-image of the interference fringes of the LIP, binary and thinning are used to treat the denoised interferograms of the LIP. The inverse Abel transform is operated on the shift of the thinned interference fringes, and the radial distribution of electron density of the LIP is obtained.

关 键 词：激光等离子体 电子密度 干涉条纹 图像处理 细化 

分 类 号：O43[机械工程—光学工程]