文章基本信息

标题：3D GEOMETRY RECONSTRUCTION OF SINGLE SHRUB USING TERRESTRIAL LASER SCANNING DATA
其他标题：REKONSTRUKCJA GEOMETRII 3D KRZEWU NA PODSTAWIE NAZIEMNEGO SKANINGU LASEROWEGO
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作者：Przemysław Tymków ; Andrzej Borkowski
期刊名称：Archiwum Fotogrametrii, Kartografii i Teledetekcji
印刷版ISSN：2083-2214
出版年度：2010
卷号：21
语种：English
出版社：Main Board of Association of Polish Surveyors
摘要：GIS applications requires detailed 3D models of land cover objects. Trees and shrubs, next to the building,constitute the main type of them. Terrestrial laser scanning (TLS) allows to determine precisely not only the external shape of the plant,but the geometry of individual branches as well. A method of macro- and micro-structure estimation of a single shrub is presented in this work. In the research data from several shrubs were used. In the macro-structural approach,where the plant is considered as a compact solid,it is important to choose those measurement points which represent the surfaces of the plant. To achieve better matching to the non-convex parts of the hull,the use of a multi-stage solid generation procedure in which points are divided into segments with common edges was proposed. This method assumes that the plant is divided along the Z axis into segments of a given width. Points from one segment are projected onto the division plane and 2D convex hull is generated for all the points. Finally,selected points (again in 3D space) are used to generate 3D convex hull. In order to define the geometry of vegetation the micro-structure procedure is supplemented by the segmentation algorithm to split points into groups,which form one branch. To verify the accuracy,the total surface area and the total shrub volume of branches calculated for individual variants were compared with the total surface area and volume derived from the direct measurements. Additionally,a few shrubs was measured and the qualitative analysis was performed.
其他摘要：Technologia naziemnego skaningu laserowego dzięki swojej precyzji i rozdziel?czości przestrzennej umożliwia odtworzenie geometrii drzew i krzewów zarówno w podejściu makrostrukturalnym,gdzie modelowany jest jej kształt obrysu zewnętrznego jak i w podejści
关键词：3D modeling;laser scanning;vegetation modeling;close range;TLS
其他关键词：modelowanie 3D;skaning laserowy;modelowanie roślinności;bliski zasięg;TLS