光学学报, 2016, 36 (9): 0911004, 网络出版: 2016-09-09   

基于背景校正和图像分割定量分析光学元件表面疵病的新算法 下载: 554次

New Algorithm of Detecting Optical Surface Imperfection Based on Background Correction and Image Segmentation
作者单位
1 上海大学材料科学与工程学院, 上海 200444
2 中国科学院上海光学精密机械研究所强激光材料重点实验室, 上海 201800
摘要
针对基于机器视觉的大口径光学元件表面疵病检测系统在成像过程中存在因照明不均匀等因素造成的图像背景不均匀等问题,采用了基于形态学的图像背景校正算法,提出了结合图像梯度和最大类间方差法的图像分割算法,实验结果表明,所提算法对于一定模糊程度的疵病图像具有较好的抗噪性能以及较高的提取精度。
Abstract
To solve the non-uniform background problem induced by the illumination with uneven light intensity in the system of detecting surface imperfection on large-aperture optical components based on the machine vision, an image background correction method is adopted based on the mathematical morphology. An image segmentation algorithm of image gradient in combination with Otsu method is proposed. The experimental results show that the proposed method has the good anti-noise performance and high extracting accuracy for the blurred images at a certain degree.
参考文献

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张博, 倪开灶, 王林军, 刘世杰*, 吴伦哲. 基于背景校正和图像分割定量分析光学元件表面疵病的新算法[J]. 光学学报, 2016, 36(9): 0911004. Zhang Bo, Ni Kaizao, Wang Linjun, Liu Shijie, Wu Lunzhe. New Algorithm of Detecting Optical Surface Imperfection Based on Background Correction and Image Segmentation[J]. Acta Optica Sinica, 2016, 36(9): 0911004.

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