关键词: 零值绝缘子, 对比度增强, 类间方差法, 相似度, 免疫遗传算法, 红外图像分割

Abstract: According to the characteristics of zero resistance insulator infrared image with poor contrast，blur target edge，large noise and the target temperature slightly higher than the environment temperature，self-adaptive median filter and mean filter are used to de-noise from the original image in this paper and enhance image by log conversion.On this basis，an improved immune genetic algorithm for zero resistance insulators infrared thermal imaging segmentation method with otsu method and similarity method combined is proposed.This method takes otsu for fitness function，ensures the population diversity by adaptive extracting immune vaccine，vaccinating vaccine，immune selection operation and avoids the traditional genetic algorithm in the “precocious” phenomenon，fast convergence rate，experiments verifies the validity.

Key words: zero resistance insulator, contrast enhancement, Otsu, similarity, immune genetic algorithm, infrared imaging segmentation