A New Method for Research on Extraction of Power Lines in Aerial Inspection System

Analyzes features of overhead power lines in aerial inspection images.Aiming at problems with using traditional edge detection algorithm to extract power lines,a new method is presented which can extact power lines from aerial inspection system.First,the method utilizes ratio edge detector which based on statistics model to detect edge points of lines.Then combine partial modified hough transform and overall hough transform to extract lines.The result of the experiment indicates algorithm can completely extracts power lines from aerial images with complicated natural background and has strong antinoise ability,the rate of entirely extract power lines is nearly 90%.So the algorithm provides guarantee for detecting the status of power lines using photogrammetric technique.So it has much practical value.