Abstract
Abstract. The quality and condition of a road surface is of great importance for convenience and safety of driving. So the investigations of the behaviour of road materials in laboratory conditions and monitoring of existing roads are widely fulfilled for controlling a geometric parameters and detecting defects in the road surface. Photogrammetry as accurate non-contact measuring method provides powerful means for solving different tasks in road surface reconstruction and analysis. The range of dimensions concerned in road surface analysis can have great variation from tenths of millimetre to hundreds meters and more. So a set of techniques is needed to meet all requirements of road parameters estimation. Two photogrammetric techniques for road surface analysis are presented: for accurate measuring of road pavement and for road surface reconstruction based on imagery obtained from unmanned aerial vehicle. The first technique uses photogrammetric system based on structured light for fast and accurate surface 3D reconstruction and it allows analysing the characteristics of road texture and monitoring the pavement behaviour. The second technique provides dense 3D model road suitable for road macro parameters estimation.
Highlights
The problem of road surface parameters measurements appeared with the first roads and still is of great importance nowadays
The photogrammetric system is designed for road pavement surface 3D reconstruction with the quality which allows performing as surface deformation monitoring as pavement profile characteristics analysis
Photogrammetric processing of images taken from unmanned aerial vehicle (UAV) platform allows obtaining road 3D model of high quality applicable for road geometric parameters estimation
Summary
The problem of road surface parameters measurements appeared with the first roads and still is of great importance nowadays. Modern road measuring techniques use a set of novel sensors (GPS, IMU, TLS, line and frame cameras) integrated in mobilemapping system on the basis of minivan vehicle. They provide the possibility of acquiring a lot of spatial information which can be processed for retrieving necessary parameters of a road (Ishikawa et al, 2006), (Kertész et al, 2008), (Shi et al, 2008), (Gandolfi et al, 2008). The developed photogrammetric system allows to generate road surface 3D model, to match corresponding patches, to measure given parameters of deformation. To make the process of deformation analysis more convenient, accurate and reliable the photogrammetric system was applied
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