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Interactive 3D GIS Focus-Plus-Context Visualisation Using WebGL

Boer, L. de (2016) Interactive 3D GIS Focus-Plus-Context Visualisation Using WebGL. Master's Thesis / Essay, Computing Science.

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Many visualization tools exist for displaying geographic information system (GIS) datasets on an interactive map on the web. Based on Leaflet, TNO has created the open-source CommonSense framework which allows users to flexibly enable filters to the dataset and apply styling in order to get better insight in the data. CommonSense has been used as a basis for many visualization applications because of its flexibility and interactivity. However, Leaflet, and thus the Common- Sense framework, only supports 2D top-down views which limits the flexibility of the framework significantly. This project introduces a solution to this based on Cesium which uses WebGL in order to enable a visualization with a fully inter- active 3D globe. Using this new functionality, a new visualization of a 3D point cloud dataset generated by TNO-developed risk anal- ysis software Effects is created, based on raycasting. A focus-plus- context approach is taken by rendering nearby building models based on LIDAR data in order to give better insight in the scale of the dataset, whilst maintaining the flexibility and interactivity that Com- monSense provides.

Item Type: Thesis (Master's Thesis / Essay)
Degree programme: Computing Science
Thesis type: Master's Thesis / Essay
Language: English
Date Deposited: 15 Feb 2018 08:25
Last Modified: 15 Feb 2018 08:25

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