This paper introduces a complex, low-cost road pavement measurement system designed primarily for pothole and crack detection. The onboard system is composed of a GPS/INS navigation unit, an image acquisition module, and a photogrammetric and imageprocessing subsystem. Due to the use of structured light and the availability of accurate navigation data, the 3D coordinates of the road points, in ...

Digital sensors, providing excellent quality with respect to geometry and radiometry, are more and more replacing traditional analogue photogrammetric data acquisition. Allowing for a completely digital data flow, particularly line scanners based on the three-line principle offer new opportunities for higher productivity and for cost reduction, since automated processing of orthoimages and DEM ...

In the past few decades, Computer Aided Design (CAD) systems have evolved from 2D tools that assist in construction design to the basis of software systems for a variety of applications, such as (re)design, manufacturing, quality control, and facility management. The basic functions of a modern CAD system are storage and retrieval of 3D data, their construction, manipulation, and visualisation....

Close-range photogrammetry is increasingly being employed for 3D measurement and modelling across a host of application areas. Consumer-grade digital cameras are becoming ubiquitous, and ‘professional’ digital cameras are becoming less expensive. Thus, access to suitable imaging technology for 3D measurement and subsequent model building and visualisation is now open to all. Access to suitable ...

The ever improving capabilities of the direct geo-referencing technology is having a positive impact on the widespread adoption of LIDAR systems for the acquisition of dense and accurate surface models over extended areas. Unlike photogrammetric techniques, derived footprints from a LIDAR system are not based on redundant measurements, which are manipulated in an adjustment procedure. The accur...

In the future field calibration and testing will be fundamental parts of photogrammetric production lines. The complete field calibration/testing concerns geometric, spatial, radiometric and spectral properties of the systems, and it is a crucial supplement to the laboratory calibration. In this article a method for complete calibration/testing of digital photogrammetric sensors, based on the S...

We present an Unmanned Aviation Vehicle-based Photogrammetric mapping system in this paper. This work is part of a project monitoring of unpaved road condition using remote sensing and other technology, sponsored by the US Department of Transportation. The system is based on a low cost model helicopter equipped with a GPS/IMU and a geomagnetic sensor to detect the position, attitude and velocit...