光子学报, 2019, 48 (7): 0710001, 网络出版: 2019-07-31   

基于邻域向量主成分分析图像增强的弱小损伤目标检测方法

A Method for Detecting Small and Weak Defect Targets Based on Neighborhood Vector PCA Image Enhancement
作者单位
1 中国科学院西安光学精密机械研究所, 西安 710119
2 中国工程物理研究院 激光聚变研究中心, 四川 绵阳 621900
摘要
提出了基于邻域向量主成分分析(NVPCA)图像增强的弱小损伤目标检测方法.该方法将损伤图像中的每个像素和它的8邻域像素看作一个列向量参加运算, 由每个像素生成的所有列向量构建一个9维的数据立方体, 通过PCA变换后中间像素和邻域像素之间不相关, 消除小目标和邻域像素之间的相关性, 这样9维数据立方体的主要信息将集中在第一维, 则变换后的第一维数据为NVPCA图像.另外, 使用局域对比度法对NVPCA图像再一次进行处理后, 获得了较好的图像增强效果.最后, 使用区域增长法将损伤目标从背景中分离出来.实验结果表明, 该方法能够检测损伤大小为1个像素和处于局部亮区的损伤目标, 满足了在线光学元件损伤检测光学系统对于损伤目标精度的要求.
Abstract
A method for detecting small and weak damaged targets based on Neighborhood Vector PCA (NVPCA) image enhancement was proposed. The main idea is that each pixel and its 8 neighborhood pixels in the damaged image are treated as a column vector to participate in the operation. All column vectors generated by each pixel will construct a 9-dimensional data cube. After PCA transformation, the correlation between the middle and neighborhood pixels is eliminated, so that the main information of the 9-dimensional data cube will be set in the first dimension, and the transformed first dimension data is NVPCA image. When the NVPCA image is processed again by LCM method, a better image enhancement effect is obtained. In addition, the region growth method is used to separate the damage target from background. The experimental results show that the method can detect the damage target with the size of 1 pixel and located in local bright area, and meet the requirement of on-line optical damage detection system for the accuracy of the damage target.

王拯洲, 李刚, 王伟, 夏彦文, 王力, 谭萌. 基于邻域向量主成分分析图像增强的弱小损伤目标检测方法[J]. 光子学报, 2019, 48(7): 0710001. WANG Zheng-zhou, LI Gang, WANG Wei, XIA Yan-wen, WANG Li, TAN Meng. A Method for Detecting Small and Weak Defect Targets Based on Neighborhood Vector PCA Image Enhancement[J]. ACTA PHOTONICA SINICA, 2019, 48(7): 0710001.

本文已被 1 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!