大论文19.TIN generation and point-cloud compression for vehicle-based mobile mapping systems.pdfVIP

Advanced Engineering Informatics 29 (2015) 841–850 Contents lists available at ScienceDirect Advanced Engineering Informatics journal homepage: /locate/aei TIN generation and point-cloud compression for vehicle-based mobile mapping systems Hiroshi Masuda a,⇑, Jun He b a The University of Electro-Communications, Japan b The University of Tokyo, Japan a r t i c l e i n f o a b s t r a c t Article history: The vehicle-based mobile mapping system (MMS) is effective for capturing dense 3D data of roads, road- Received 21 May 2014 side objects and buildings. Since discrete points are not convenient for many application systems, a tri- Received in revised form 26 May 2015 angulated irregular network (TIN) is often generated from point-clouds. However, TIN data require two or Accepted 31 May 2015 three times larger storage than point-clouds. If TIN models can be promptly generated while loading point-clouds, it would not be necessary to store huge TIN models on a hard disk. In this paper, we propose two efficient TIN generation methods according to types of laser scanners. One is the line-by-line TIN Keywords: generation method, and the other is the GPS-time based method. These methods can quickly generate Mobile mapping system Point-cloud TIN models based on scan lines of laser scanners. In addition, we introduce a new compression method Laser scanning