Fig. 3From: Automatic classification of insulator by combining k-nearest neighbor algorithm with multi-type feature for the Internet of ThingsAccuracy with images of different category background. As shown in the figure, the blue curve denotes the accuracy of the image with the background of the buildings. The green curve denotes the accuracy of the image with the background of the sky, and the red curve denotes the accuracy of the image with the background of the forestBack to article page