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 PowerPoint PPT Presentation


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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

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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

2008

2008

2010

2009

2007

2006

2012

2011


Synthesis project 2013

Synthesis project 2013

  • 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

  • Localisation

  • System architecture

  • Model & Database

  • Network & Navigation

  • User interface & Visualisation


System architecture

System Architecture

  • System Components:

  • Sever (DBMS)

  • Web services

  • Application (HTML&Unity)


Model and database

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

Database Design and Implementation

Functionalities

Localization

Navigation

3D Visualization

Context Service

existingNM

CityGML


Network extraction

NetworkExtraction


Indoor research and applications

Indoor research and applications

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

Junqiao (John) Zhao, TUDelft


Surface for navigation

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 extraction1

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

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 v isualization

3D Mobile visualization


Mobile visualization technology

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

Pipeline of 3D visualization in Unity3D

Path visualization

Import 3D model

Create scene

Export to android

Model

(.dae)

Route info (.txt)


User interface

User interface


User interface1

User Interface

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

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

  • The path as pink line


Future work

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

Acknowledgements

Thank You!

Questions?


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