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电网技术  2010 

绝缘子串红外图像中单个绝缘子盘面的提取方法

, PP. 220-224

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Abstract:

应用组合方法分割绝缘子串红外图像,首先采用改进的一维直方图灰度拉伸法增强绝缘子红外图像;然后用Otsu法对图像进行阈值分割;图像二值化后,采用形态学开启、闭合操作对图像进行去噪;再用梯度法提取图像边缘。绝缘子串中单个绝缘子盘面灰度没有明显差别,故采用最小二乘法拟合单个绝缘子盘面边缘;同时绝缘子串中各个绝缘子盘面遮挡部分不同,故对串中各个绝缘子未被遮挡的半盘面图像进行了提取。

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