期刊名称：Archiwum Fotogrametrii, Kartografii i Teledetekcji
印刷版ISSN：2083-2214
出版年度：2008
卷号：18
语种：English
出版社：Main Board of Association of Polish Surveyors
摘要：Terrestrial laser scanning is a very useful tool in inventoring architectural,engineering,and industrial objects and buildings. Sometimes,when an object is bright and difficult to access,the only possibility of measuring it is through scanning. The high precision and high speed of scanning make it possible to acquire information about the object's geometry and dimensions in a short time. The condition of the object is another aspect,an important one as well. The destroyed or damaged road infrastructure is dangerous,therefore it is necessary to check its condition. Experiments were made by scanning two bridges in Warsaw,the ĝwiĊtokrzyski and the Siekierkowski. Point clouds were acquired from several stations. A major problem appeared during scan registration. Street traffic,vibrations and/or bad visibility disabled the targets used and made it necessary to apply other measurements methods. Finally,the recording error in the experiments did not exceed 0.003 and 0.012 m for the ĝwiĊtokrzyski and the Siekierkowski bridge,respectively. Additionally,an attempts was made at using information on signal intensity. This information can be useful when it is desired to assess the condition of some construction elements. Samples of different construction materials: aluminum,corroded steel,brick,wood,PVC,and others were tested in a test field created. Not only was the usable scanning rate determined,but the possible scanning angle was identified as well. The paper discusses the results obtained and describes the samples tested. In the measurements,appropriate location of stations as well as geometric and material conditions allowed to use the scanning range of 150 m. The paper presents also the methods for laser scanning of bridge constructions,scan registrations as well as generation of 3D models and cross-sections.
其他摘要：Naziemny skaning laserowy jest nieocenionym narzĊdziem inwentaryzacji obiektów architektonicznych,inĪynieryjnych,instalacji przemysáowych i mas ziemnych. W przypadku,kiedy obiekt jest rozlegáy,znacznie oddalony od stanowiska pomiarowego,lub dostĊp do nieg
关键词：terrestrial laser scanning;close range photogrammetry;road engineering;3D model;registration
