3D Power Line Extraction from Multiple Aerial Images

3D Power Line Extraction from Multiple Aerial Images

Power lines are cables that carry electrical power from a power plant to an electrical substation. They must be connected between the tower structures in such a way that ensures minimum tension and sufficient clearance from the ground. Power lines can stretch and sag with the changing weather, eventually exceeding the planned tolerances. The excessive sags can then cause serious accidents, whil...

Surface Texture and Microstructure Extraction from Multiple Aerial Images

3d Road-mark Reconstruction from Multiple Calibrated Aerial Images

A method for accurate 3D reconstruction of road features from multiple calibrated aerial images of urban areas is proposed in this paper. We here focus on road-marks and in particular on zebra-crossings and discontinuous road-marks separating circulation lanes. The approaches used here are generic and based on a-priori external knowledge and thus constrain the extraction of image features. As w...

Automatic Building Extraction from Aerial Images

This paper describes the initial steps of an ongoing project, which aims to analyze building extraction methods, and their approaches. Automatic building extraction from aerial images uses many approaches from the computer vision technology. The object recognition of man-made features has many difficulties that are discussed and to query. Many steps are involved in the approaches today that lea...

3d Road Extraction Using a Stereo Pair of Aerial Images

Road extraction from aerial and satellite imagery is of fundamental importance in the context of spatial data capturing and updating for GIS (Geographic Information System) applications. This article proposes a semiautomatic methodology for 3D road extraction from digital images. The dynamic programming (DP) algorithm is used to carry out the optimisation process in the object-space, instead of...