Segmentation Algorithm of Hydrophobic Image Based on Improved Canny Operator

doi:10.13296/j.1001-1609.hva.2014.01.018

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Segmentation Algorithm of Hydrophobic Image Based on Improved Canny Operator

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- Segmentation Algorithm of Hydrophobic Image Based on Improved Canny Operator
- High VoltageApparatus Vol. 50, Issue 1, Pages: 97-101(2014)
- 作者机构：
  
  河北省输变电设备安全防御重点实验室(华北电力大学)
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2014.01.018
  CLC： TM216
- Published：2014
- 稿件说明：
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[1]汪佛池,闫康,张重远,贾自杭,律方成.基于改进的Canny算子的憎水性图像分割方法的研究[J].高压电器,2014,50(01):97-101.

Segmentation Algorithm of Hydrophobic Image Based on Improved Canny Operator[J]. High voltageapparatus, 2014, 50(1): 97-101.
[1]汪佛池,闫康,张重远,贾自杭,律方成.基于改进的Canny算子的憎水性图像分割方法的研究[J].高压电器,2014,50(01):97-101. DOI： 10.13296/j.1001-1609.hva.2014.01.018.

Segmentation Algorithm of Hydrophobic Image Based on Improved Canny Operator[J]. High voltageapparatus, 2014, 50(1): 97-101. DOI： 10.13296/j.1001-1609.hva.2014.01.018.

摘要

绝缘子表面憎水性检测是判断绝缘子性能的主要手段

对于电力系统的安全运行有着重要的意义。传统的分割算法分割效果不理想

从而影响憎水性分级的准确性。为此提出了基于改进的Canny算子的憎水性图像分割方法。考虑到绝缘子背景的复杂性

首先

利用自适应直方图均衡对图像进行增强

然后利用改进的Canny算子提取图像中水珠（或水迹）的边缘

最后利用数学形态学中的区域填充、膨胀、腐蚀、移除对象等操作对图像进行处理。实验结果表明:该方法能够对憎水性图像进行有效地分割

为后续绝缘子性能的判定提供依据。

Abstract

Hydrophobicity measurement is a vital way to evaluate the performance of insulators

which is important for safe operation of an electric power system. However

the traditional segmentation algorithm is unsatisfactory in classification accuracy of hydrophobicity. Therefore

a hydrophobic image segmentation algorithm based on the improved Canny operator is proposed in this paper. Considering the complexity of hydrophobic image

the image is enhanced by adaptive histogram equalization

then the improved Canny operator is used to extract the edge of water drops（or water marks）. Finally

some methods in mathematical morphology

such as region filling

expansion

corrosion and removing

are used to process the image. Experiments show that the proposed segmentation algorithm is suitable for all kinds of hydrophobic images

and it may provide a criterion for hydrophobicity grade of an insulator.

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