A 3D MODEL BASED INDOOR NAVIGATION SYSTEM FOR HUBEI PROVINCIAL MUSEUM W. Xu, M. Kruminaite, B. Onrust, H. Liu, Q. Xiong, S. Zlatanova.

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Presentation transcript:

A 3D MODEL BASED INDOOR NAVIGATION SYSTEM FOR HUBEI PROVINCIAL MUSEUM W. Xu, M. Kruminaite, B. Onrust, H. Liu, Q. Xiong, S. Zlatanova

Previous projects

Synthesis project 2013 The overall goal is a 3D multi-purpose indoor navigation application for the Hubei Provincial Museum 3D model of Wuhan The first activity of the JRC Wuhan- TUDelft Supervisors: Edward Verbree Qing Zhu, Sisi Zlatanova

Key issues Localisation System architecture Model & Database Network & Navigation User interface & Visualisation

System Architecture System Components: Sever (DBMS) Web services Application (HTML&Unity)

Model and database One model for all: localization, navigation, 3D visualization (CityGML) and context information (exhibits) PostGIS: Native geometric data type Spatial index Plenty spatial analysis functions, also in pgRouting module

Database Design and Implementation Relationships between tables Functionalities Localization Navigation 3D Visualization Context Service CityGML existingNM

Network Extraction

Indoor research and applications Claramunt and Ray., 2010 Bandi and Thalmann, 1998 Lorenz et al Google Indoor on Mobile

3D Grid: fly over, fly under Junqiao (John) Zhao, TUDelft

Surface for navigation Height of the storey Filter all the bottom faces of doors, walls and floors. Clean the overlapping parts of those bottom faces manual

Network Extraction Semi-automatic approach: Constrained Delaunay Triangulation (Triangle Python library). Center points of the triangles, doors and exhibits Connecting center points of adjacent triangles, doors and exhibits

3D Network Extraction Navigation between floors stacking the layers of 2D The vertical connections has to be created. Height information has to be assigned to all nodes. (not done) (Till et al 2011)

3D Mobile visualization

Mobile visualization technology Local visualization – Graphic API: OpenGL ES and Mobile 3D Graphics API – Game engine Remote visualization – Web visualization : HTML5 and WebGL

Pipeline of 3D visualization in Unity3D Import 3D modelCreate scene Path visualization Export to android Route info (.txt) Model (.dae)

User interface

User Interface Main menu Images show the exhibits. By pressing one of them, the route to them is then displayed in a 3D scene on the screen

Path Visualization The users location (starting point as red sphere). The path as pink line

Future Work Different user types in the application. Extraction of 3D navigation network. 3D model storage in the database. Information about objects (exhibits) in the mobile device.

Acknowledgements Thank You! Questions?