摘要
针对放电可见光图像的背景干扰影响图像的空间分布问题,在对可见光电晕图像的灰度分析的基础上,提出了一种基于RGB颜色系统提取沿面放电有效放电区域的新方法。对沿面放电可见光图像的红(R)、绿(G)、蓝(B)三分量的空间分布特征研究发现:G分量所占比例低,主要反映放电主干部分,R、B分量能很好地反映放电的空间结构,分布区域较为相似。然后利用R+B的合成分量对放电图像进行了降噪处理。研究结果表明,此方法优于通过设定单一灰度级作为背景阈值的方法,为后期定量研究沿面放电图像提供了一套高效可行的方法。
Aiming at the problem of the background light interference on the optical image image processing method presented in our previously paper is used to develop a new method discharge area, which is based on red, green and blue （RGB） color system. Firstly, the each color component（R, G, B） is analyzed. Component G takes up low proportion, which of the discharge. Components R and B can reflect the spatial distribution of the discharge, of discharge, a digital to extract the effective spatial distribution of reflects the main part and they have similar distribution area. Then the synthetic components（R＋B）are used to reduce the noise of discharge image. This method is better than the method of setting a single gray level as a threshold value of background and can be a feasible and efficient method for the further study of the surface discharge.
出处
《高压电器》
CAS
CSCD
北大核心
2016年第10期38-42,48,共6页
High Voltage Apparatus
基金
国家自然基金资助项目(51577081)~~
关键词
RGB颜色系统
有效放电区域
沿面放电
阈值
RGB color system
effective discharge area
surface discharge
threshold
