A Method to Extract Insulator Image From Aerial Image of Helicopter Patrol

A new algorithm to extract insulator images from aerial image acquired by intelligent patrol of helicopter is proposed.Firstly,this algorithm converts the color image of glass insulators with high resolution,which is acquired by helicopter patrol,from RGB color space into HSI color space;then using the maximum entropy threshold method based on genetic algorithm,the continue image segmentation is applied to S component in HSI space;and then the noise in the segmented image is filtered by doubly structured cascaded filters;finally,by means of connected components labeling operation the contour of insulator string is marked out from aerial image with complicated background.Results of calculation example show that the proposed algorithm can extract integral insulator image from aerial image with complicated background,and it is practicable.