Overhead inspections of high voltage power lines are very expensive undertaking. Power lines require systematic inspections to avoid failures and power outages. In each growing season vegetation encroachment is one of the most severe threat. Presently overhead inspections use helicopters and are carried out manually at least once a year. More cost effective systems, using UAV, are being researched. In this paper selected methods from all studied solutions were compared. A cost effective system

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... as proposed using consumer grade UAV with standard camera and deep neural networks for detecting vegetation encroachment.