高斯差分滤波多尺度损伤提取方法

提出了高斯差分滤波的多尺度损伤提取方法和流程, 对大口径光学元件的损伤图像进行了处理, 结果表明, 该方法对微弱信号与强信号混杂有很好适应性, 且能有效解决低信噪比光学元件损伤图像中的损伤提取难题, 对于分辨率125 μm、口径400 mm×400 mm的光学元件损伤图像, 该方法可以100％提取损伤图像中尺寸在50 μm以上的所有损伤的种子, 满足了大型激光装置安全运行的需要。

Abstract

It is difficult to distinguish the laser damage from local surroundings by computer in the laser damage image which includes images with background noise, ghost reflections, different illumination and other sources of variation. Based on difference of Gaussian filter, we developed a new local area Signal-to-Noise ratio algorithm for extracting the seed of multi-scale laser damage in final optical images from a large laser system. This algorithm was used to extract the seed of flaws in the image where the field of view of a pixel is approximately 125 μm, and captured the seed of flaws with diameter more than 50 μm at 100% extraction rate.

参考文献

[1] Norton M A, Donohue E E, Feit M D, et al. Growth of laser damage in fused SiO2 under multiple wavelength irradiation［C］//Proc of SPIE. 2005, 5991: 599108.

[2] Guss G, Bass I, Hackel R, High-resolution 3-D imaging of surface damage sites in fused silica with optical coherence tomography［C］//Proc of SPIE. 2007, 6720: 67201F.

[3] 彭志涛, 魏晓峰, 元浩宇, 等. 全内反射照明光学元件损伤检测信噪比分析［J］. 红外与激光工程, 2011, 40(6): 1111-1114.(Peng Zhitao, Wei Xiaofeng, Yuan Haoyu, et al. Signal noise ratio of total internal reflection edge illumination for optics damage inspection. Infrared and Laser Engineering, 2011, 40(6): 1111-1114)

[4] Conder A, Alger T, Azevedo S, et al. Final optics damage inspection(FODI) for the National Ignition Facility［C］//Proc of SPIE. 2007, 6720: 672010.

[5] Kegelmeyer L M, Clark R, Richard R, et al. Automated optics inspection analysis for NIF［J］. Fusion Engineering and Design, 2012, 87: 2120-2124.

[6] 冯博, 刘炳国, 陈风东, 等. 光学元件损伤在线检测图像处理技术［J］. 中国激光, 2013, 25(7): 1097-1700.(Feng Bo, Liu Bingguo, Chen fengdong, et al. Image progressing technology of optics damage online inspection. Chinese Journal of Lasers, 2013, 25(7): 1097-1700)

[7] Marr D, Hildreth E. Theory of edge detection［C］//Proceedings of the Royal Society of London. 1980, 207: 187-217.

[8] Tyan C, Wang P. Image processing-enhancement, filtering and edge detection using the fuzzy logic approach［C］//IEEE 0-7803-0614-7/93.

[9] Philip B, Bhargav M, Nagachetan M, et al. Approximate bandpass and frequency response models of the difference of Gaussian filter［J］. Optics Communications, 2010, 283(24): 4942-4948.

[10] 许景波. 高斯滤波器逼近理论与应用研究［D］. 哈尔滨: 哈尔滨工业大学, 2007: 100-103.(Xu Jingbo. Study on approximation theory and application of Gaussian filter. Harbin: Harbin Institute of Technology Press, 2007: 100-103)

彭志涛, 陈风东, 唐军, 刘国栋, 元浩宇, 朱启华. 高斯差分滤波多尺度损伤提取方法[J]. 强激光与粒子束, 2017, 29(9): 091003. Peng Zhitao, Chen Fengdong, Tang Jun, Liu Guodong, Yuan Haoyu, Zhu Qihua. Extracting multi-scale laser damage in optics on difference of Gaussian filter[J]. High Power Laser and Particle Beams, 2017, 29(9): 091003.

高斯差分滤波多尺度损伤提取方法

关于本站 Cookie 的使用提示

全站搜索

高斯差分滤波多尺度损伤提取方法

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索