Zhiyuan Qiao's research while affiliated with Beihang University (BUAA) and other places

Publications (3)

Article
A rapid visualization method of GIS vector data on 3D terrain is proposed in this paper, including the organization of 3D vector data based on a quad-tree structure, the way to spatialize 2D vector data with terrain matching and methods to render a large amount of vector objects in a 3D scene. In the preprocessing procedure, vector data is extracte...
Article
Clouds are integral part in 3D-GIS visualization, without them 3D scene seem unrealistic. The paper presents a technical framework to simulate clouds from macroscopic to microcosmic scale in Global 3D-GIS. In the case of the macroscopic scale, which means the viewpoint is far away from the 3D scene in 3D-GIS, cloud was expressed with semi-transpare...
Article
Aiming at the problem that the efficiency of mass vector data rendering in global 3D GIS is low, this paper put forward a new way of processing and scheduling the data. The problem of crack phenomenon after the compression of public boundary in LOD model of vector data have been solved by the way based on the Douglas-Pecuker algorithm. In addition,...

Citations

... Texture-based approaches rasterize the vector data into textures that are then mapped onto the terrain surface [56]. Geometry-based approaches (often used for the simultaneous representation of digital elevation data and vector data [52,57,58,59,60]) allow the geometry of the vector data to exist separately from the geometry of the terrain, albeit modified for consistency with the terrain shape [61]. Shadow volume-based approaches, such as that described in [51], extrude the vector geometry into polyhedrons that are then rendered into the stencil buffer to distinguish between visible and invisible parts of the scene. ...