A 3d model based indoor navigation system for hubei provincial museum
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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. 2008. 2008. 2010. 2009. 2007. 2006. 2012. 2011. Synthesis project 2013.

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A 3d model based indoor navigation system for hubei provincial museum

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
Previous projects PROVINCIAL MUSEUM

2008

2008

2010

2009

2007

2006

2012

2011


Synthesis project 2013
Synthesis project 2013 PROVINCIAL MUSEUM

  • The overall goal is a 3D multi-purpose indoor navigation application for the Hubei ProvincialMuseum

  • 3D model of Wuhan

  • The first activity of the JRC Wuhan-TUDelft

    Supervisors:

  • Edward Verbree

  • Qing Zhu, SisiZlatanova


Key issues
Key issues PROVINCIAL MUSEUM

  • Localisation

  • System architecture

  • Model & Database

  • Network & Navigation

  • User interface & Visualisation


System architecture
System Architecture PROVINCIAL MUSEUM

  • System Components:

  • Sever (DBMS)

  • Web services

  • Application (HTML&Unity)


Model and database
Model and database PROVINCIAL MUSEUM

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 PROVINCIAL MUSEUM

Database Design and Implementation

Functionalities

Localization

Navigation

3D Visualization

Context Service

existingNM

CityGML


Network extraction
Network PROVINCIAL MUSEUMExtraction


Indoor research and applications
Indoor research and applications PROVINCIAL MUSEUM

Lorenz et al 2006

Claramunt and Ray., 2010

Google Indoor

on Mobile

http://w5.cs.uni-sb.de/~stahl/yamamoto

Bandi and Thalmann, 1998


3d grid fly over fly under
3D Grid: fly over, fly under PROVINCIAL MUSEUM

Junqiao (John) Zhao, TUDelft


Surface for navigation
Surface for navigation PROVINCIAL MUSEUM

  • Height of the storey

  • Filter all the bottom faces of doors, walls and floors.

  • Clean the overlapping parts of those bottom faces

manual


Network extraction1
Network Extraction PROVINCIAL MUSEUM

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
3D Network Extraction PROVINCIAL MUSEUM

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 v isualization
3D Mobile PROVINCIAL MUSEUMvisualization


Mobile visualization technology
Mobile visualization technology PROVINCIAL MUSEUM

  • 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
Pipeline of 3D visualization in Unity3D PROVINCIAL MUSEUM

Path visualization

Import 3D model

Create scene

Export to android

Model

(.dae)

Route info (.txt)


User interface
User interface PROVINCIAL MUSEUM


User interface1
User Interface PROVINCIAL MUSEUM

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

Main menu


Path visualization
Path Visualization PROVINCIAL MUSEUM

  • The user’s location (starting point as red sphere).

  • The path as pink line


Future work
Future Work PROVINCIAL MUSEUM

  • 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
Acknowledgements PROVINCIAL MUSEUM

Thank You!

Questions?


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