Verification of accuracy for forest mensuration using a terrestrial laser scanner
نویسندگان
چکیده
منابع مشابه
Occlusion Area as Suitable Guidance for Terrestrial Laser Scanner Localization
Terrestrial Laser Scanner (TLS) technology, have altered quickly data acquisition for map production in surveying. In many cases, it is impossible to complete surveying of the desired area without TLS displacement in one station to another. Occlusion is innate in data acquisition, with this type of device. To solve this problem, TLS devices should be placed in different locations and scanning o...
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A method for extracting forest parameters is described in this paper. The 3D point clouds derived from phase difference laser scanners in forests were processed in a step-wise separation. The first step contains basic filter methods to reduce raw data which, separates isolated points or deletes those artefacts resulting from the ambiguity problem. The next step includes using algorithms to isol...
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Building 3D models using terrestrial laser scanner (TLS) data is currently an active area of research, especially in the fields of heritage recording and site documentation. Multiple TLS scans are often required to generate an occlusion-free 3D model in situations where the object to be recorded has a complex geometry. The first task associated with building 3D models from laser scanner data in...
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Three case applications for forest resource assessment using airborne laser scanner (LiDAR) will be introduced. The first case is “assessment of high density forest area”. The area where forest maintenance is necessary is extracted using colour composite of three layers developed from laser point group; (1) attained distance from DSM into forest (2) tree height (3) reflection intensity. The sec...
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A combined analysis of multiple terrestrial laser scanner point clouds recorded from different positions requires a geometric registration of these scans. In most applications of terrestrial laser scanning, artificial tie points, which can be recognized automatically by proprietary scanner software, are placed in the scanning area. In this case, the scan positions have to be chosen in a way tha...
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ژورنال
عنوان ژورنال: Japanese Journal of Forest Planning
سال: 2018
ISSN: 0917-2017,2189-8308
DOI: 10.20659/jjfp.51.2_47