Study on the Calculation Method of Ice Thickness Calculation and Wire Extraction Based on Infrared Image

摘要

In order to accurately measure the ice coating thickness on the ice-covered wire, the conventional ice-covering measurement method has complex operations and insufficient accuracy. This paper based on the infrared image of ice covered wire obtained by UAV and uses the image processing method to perform edge detection on the infrared image of the ice coating wire. The results show that Ratio operator detection results are superior to Canny operator and Steger operator. Then, the Hough change is performed on the image detected by the Ratio operator edge, and the exact position of the wire in the infrared image is extracted to prepare for the next calculation of the ice thickness. Finally, on the basis of the extracted infrared image, the calculation of the ice thickness on the ice-covered wire is converted into the solution of the image pixels. Then the image data is used to calculate the inclination of the overhead transmission line in the image, and the thickness of the ice coating is corrected. Finally.the results obtained by experiment show that the error between the calculation results of the ice coating thickness obtained by the pixel solution method and the thickness of the ice coating obtained by the numerical calculation is very small. Therefore, this method can accurately calculate the ice-covering thickness of the ice-covered wire and has a good application prospect in the wire ice covered field.