期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2003
卷号：XXXIV-5/W12
出版社：Copernicus Publications
摘要：Laserscanners are used more and more as surveying instruments for various applications. With the advance of high precision systems, capable of working in most real world environments under a variety of conditions, numerous applications have opened up. The developed IMAGER 5003 is a state-of-the-art, high precision, high speed laser scanner that provides accurate measurements. The IMAGER 5003 measures both, range and reflectance images at the same time. The range image generates geometric dimensions of the environmental scenes whereas the reflectance image generates a photographic like impression of the scanned environment which is used for feature extraction, visual inspection, object identification, surface classification and documentation purposes. The laser sensor thus provides an active illumination, non-contact measurement of the environment. This is advantageous in many situations, where operator access is limited or poor ambient lighting exists. To realise surveying tasks in industrial areas as well as architectural, archaeological and cultural landscapes conservation, the point clouds measured by the laser radar are transformed into 3D models, describing the environment digitally by means of meshed surfaces. If possible, geometric constraints like plans, cylinders may be adapted optionally resulting on a CAD model. After meshing, resulting "as-built" models are the base to generate a data base of the existing monument. This paper reports design and applications of the Z+F IMAGER 5003. It reports the realised approach from physical measurement to "as built" models in the end. It presents different applications and shows the process from measurement in the field to the modelling. In a first example we show results from three individual cultural landscape conservation projects. Furthermore, we demonstrate the application of the 3-D laser radar in generating a model of an industrial environment (manufacturing area).
关键词：Laser; imaging; range; Intensity; Reflectance; modelling; as-built; environment; 3D map
