A Study on Object Extraction in Steel Tower Videos Shot by Inspection Transmission Line Tower

Abstract

In order to properly maintain and manage transmission line towers, engineers climbs towers and visually diagnoses paint flm degradation of the towers. Recently, primary inspection using videos captured by a camera which is set at a safe place such as the ground and building roofs has been performed. However, the burden on the inspection by visual inspection is enormous. Therefore, new technologies for transmission line tower inspection using the video are necessary. In this paper, we propose tower region detection method as an initial study of inspection support technology using videos. The proposed method can extract tower regions from the video captured by the camera set at the overhead ground wire. The videos include non-subject regions such as sky and trees in addition to steel tower. Furthermore, since the steel tower area is the foreground and the camera is shaking, the tower area moves more than the background area. Therefore, the proposed method remove background area based on color and extract the large motion area. Then the proposed method extracts the steel tower area by integrating the results.