红外技术, 2018, 40 (11): 1112, 网络出版: 2018-12-18   

复杂环境下电力设备红外热图增强与分割研究

Research on Enhancement and Segmentation of Power Equipment Infrared Heat Map in Complex Environment
作者单位
1 广东电网有限责任公司珠海供电局,广东珠海 519000
2 华南理工大学电子与信息学院,广东广州 510006
摘要
在户外电力设备维护中,红外热图增强与分割是今后诊断排障智能化发展的关键一环。本文提出复杂环境下电力设备红外热图增强与分割的新模型:采用区域联合先验信息约束和伽马变换对 Retinex图像增强模型进行改进;提出多尺度结构保留型平滑滤波,用高斯正则项约束滤波尺寸。新模型不仅可以对隐藏噪声进行估计补偿,增大红外热图的对比度,而且消除了滤波边缘弥散现象,适用于多种尺寸的电力设备分割。实验证实,在复杂环境下相比其他算法,新模型可以得到更为完整、高对比度的红外热图,同时具备去除绝大多数背景干扰的性能。
Abstract
In the maintenance of outdoor power equipment, infrared heat map segmentation is the key to the intelligent development of equipment diagnosis and obstacle removal in the future. This paper presents a new model of infrared heat map segmentation for power equipment in a complex environment. First, the improved Retinex model is improved using the joint prior information and the gamma transform. Further, the Gaussian regularization is used to constrain the filter size to achieve the multiscale structure-preserving smoothing filter. The new model can not only estimate the hidden noise, compensate the contrast, increase the contrast of the infrared heat map, render an easy observation, but can also apply to different sizes of power equipment and eliminate the filtering edge dispersion. Our experiments have demonstrated that the new model can obtain a more complete infrared heat map and remove most of the background interference compared with other algorithms in complex environments.

陈基顺, 肖立军, 万新宇, 麦锐杰, 秦慧平, 李磊. 复杂环境下电力设备红外热图增强与分割研究[J]. 红外技术, 2018, 40(11): 1112. CHEN Jishun, XIAO Lijun, WAN Xinyu, MAI Ruijie, QIN Huiping, LI Lei. Research on Enhancement and Segmentation of Power Equipment Infrared Heat Map in Complex Environment[J]. Infrared Technology, 2018, 40(11): 1112.

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