Equipments in substation can be monitored by remote video system

and the images are transferred to the terminal at the same time.Extract the correct analysis of target can greatly improve the image processing speed

during the process of image analysis equipment.In this paper

extract target in insulator-images methods are separately proposed based on gray-character and color-character.The former has complex step but the influence made by running time is little.The latter is feasible while it is only effective to the short-running time insulator because of the color character.