Continuous Extraction of Subway Tunnel Cross Sections Based on Terrestrial Point Clouds
نویسندگان
چکیده
منابع مشابه
Continuous Extraction of Subway Tunnel Cross Sections Based on Terrestrial Point Clouds
An efficient method for the continuous extraction of subway tunnel cross sections using terrestrial point clouds is proposed. First, the continuous central axis of the tunnel is extracted using a 2D projection of the point cloud and curve fitting using the RANSAC (RANdom SAmple Consensus) algorithm, and the axis is optimized using a global extraction strategy based on segment-wise fitting. The ...
متن کاملAutomatic Extraction of Tunnel Lining Cross-Sections from Terrestrial Laser Scanning Point Clouds
Tunnel lining (bare-lining) cross-sections play an important role in analyzing deformations of tunnel linings. The goal of this paper is to develop an automatic method for extracting bare-lining cross-sections from terrestrial laser scanning (TLS) point clouds. First, the combination of a 2D projection strategy and angle criterion is used for tunnel boundary point detection, from which we estim...
متن کاملSemantic Feature Based Registration of Terrestrial Point Clouds
As an active remote sensing technique, Terrestrial Laser Scanning (TLS) is popular for constructing detailed 3D models of complex objects. To create a complete 3D scene, TLS point clouds scanned from multiple positions need to be registered to the same coordinate system. Conventional registration methods demand significant amount of manual work. Recent studies use geometric features (points, li...
متن کاملFeature-based Registration of Terrestrial Lidar Point Clouds
Complete scene description by using terrestrial LIDAR systems usually requires multiple scans from different stations. Point cloud of each scan is associated to its own coordinate system on a station basis. Therefore, before all the scans can be registered onto a common coordinate system, the parameters of transformation between different coordinate systems have to be first established. In this...
متن کاملBuilding Boundary Extraction Based on Lidar Point Clouds Data
LIDAR (Light Detection And Ranging) is an active remote sensing system, which could provide fleetly three dimensional information of earth surface with high vertical accuracy. Now the building boundary extraction and normalization is the key approach for 3D modeling of building and city mapping. In this paper, a new algorithm named Alpha Shapes is developed to extract the building boundary. Com...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Remote Sensing
سال: 2014
ISSN: 2072-4292
DOI: 10.3390/rs6010857