A 3D scanner, based on incoherent illumination techniques, and associated data-processing algorithms are presented that can be used to scan objects at lateral resolutions ranging from 5 to 100 microm (or more) and depth resolutions of approximately 2 microm. The scanner was designed with the specific intent to scan cuneiform tablets but can be utilized for other applications. Photometric stereo...

Within this work an approach was developed, which utilises airborne laser scanner data in order to generate 3D building models. These 3D building models may be used for technical and environmental planning. The approach has to follow certain requirements such as working automatically and robust and being flexible in use but still practicable. The approach starts with small point clouds containi...

We present a novel individually addressable diode laser array that uses angle-etched facets. By arranging the lasers in a fan-like structure, all lasers emit in different directions from a common effective aperture. Using this device design, we demonstrate lasers with beam directions that are fixed and distinct, stable, single mode, and capable of simultaneous and random access operation. We an...

The proper preparation of the surface of concrete is an important stage in the construction and renovation of building structures. Before placing a concrete topping it is essential to determine the morphology of the concrete base surface. This paper describes a novel application of three-dimensional (3D) optical laser triangulation method for investigation of the concrete surface morphology. It...

Blood flow in microcirculation has found vital role in maintenance of body temperature. Its measurement is vital in the field of skin-vessel reactivity, ageing of skin, micro vascular repair of the ulnar artery and wound healing in association with total elbow replacement. The existing techniques for blood flow measurements like Electromagnetic blood flow measurement, Thermal convection method,...

INTRODUCTION Large volume laser scanners are used for a variety of purposes, including dimensional metrology of large artifacts, digitization and reverse engineering, as well as historical preservation and archiving. These devices exploit the propagative properties of structured light (in this case, lased light) to collect spatial information of objects in the field of view. Laser scanners empl...

In last years laser scanning have increased its application in different fields: from geological to architectural and archaeological survey, from real time monitoring to rapid prototyping. Respect to architecture and archaeology, but more generally to Cultural Heritage, laser scanning technology is becoming more popular as can be proved in the latest works: big amount of data, accuracy, operabi...

The ability to generate accurate and detailed three-dimensional (3D) maps of a scene from a mobile platform is an essential technology for a wide variety of applications from robotic navigation to geological surveying. In many instances, the best vantage point is from above, and as a result, there is a growing demand for low-altitude mapping solutions from micro aerial vehicles such as small qu...

The effect of incidence angle on the intensity of laser backscatter has been studied in photonics and optics, but the applications of these results to remote sensing of natural land targets are limited, as well as the availability of experimental validation data for airborne and terrestrial laser scanning, where the incidence angle correction using the Lambertian scattering law is common. We ha...

Permission is granted to quote short excerpts and to reproduce figures and tables from this report, provided that the source of such material is fully acknowledged. ABSTRACT A 3-D laser tracking scanner system analysis focusing on immunity to ambient sunlight and geometrical resolution and accuracy is presented in the context of a space application. The main goal of this development is to provi...