Research on Insulator Creepage Distance Measurement Based on Different Photographic Equipment

In order to measure the creepage distance of the post insulator, this paper proposes a method for calculating the length of curve which without equation, and chose two typical photographic equipment like cellphone and camera, to research the experimental results of this method when use different equipment. The first, two equipment are used to take pictures in the same environment, and then preprocess this images to get creepage path of the insulator, finally, the actual creepage distance of the insulator is counted by calculating the length of the path in picture. The experimental results show that the method in this paper is able to calculate the creepage distance, and the error is low, so it can be used in different photographic equipment.