Day 1 (12 Nov 2014)

8:00-9:00 Registration
9:00-9:30 Opening session
9:30-10:00 Keynote: Dubai Municipality Geographic Information System Vision Plan
Abdullah Rafie, Assistant Director General For Engineering and Planning Sector
10:00-10:45 Keynote: Spatial Context in 3DGeoInfo
Christopher Gold
10:45-11:05 Keynote: Abu Dhabi's Building's Data Management System
Maitha Al Nuaimi
11:05-11:20 Sponsored talk: Building Information Modeling (BIM)
Marc Durand, Executive Director of Technology & Innovation, ITECH Management Consultancy
11:20-11:30 Announcing GRASF 2015 & MEGF 2015 conferences
Hussein M. Abdulmuttalib, Vaibhav Arora
11:30-11:45 Coffee break
11:45-12:45 Session 1: Data quality, semantics and LoD

Semantic validation of GML-based geospatial data
Detlev Wagner, Joachim Benner and Volker Coors

Improving the consistency of multi-LOD CityGML datasets by removing redundancy
Filip Biljecki, Hugo Ledoux and Jantien Stoter

Height references of CityGML LOD1 buildings and their influence on applications
Filip Biljecki, Hugo Ledoux and Jantien Stoter

Generalization of 3D IFC building models
Andreas Geiger, Joachim Benner and Karl-Heinz Häfele
12:45-14:15 Lunch break
14:15-15:35 Session 2: Data modelling and topology

A hybrid approach integrating 3D city models, remotely sensed SAR data and interval-valued fuzzy soft set based decision making for post disaster mapping of urban areas
Iftikhar Ali, Aftab Ahmad Khan, Salman Qureshi, Mudassar Umar, Dagmar Haase and Ihab Hijazi

A general data modeling framework for 3D geographic information systems (3D GIS)
Shuqing Zhang, Lihua Liu, Junyan Zhang and Xiangcong Chen

Modeling and managing topology for 3D track planning applications
Martin Breunig, Andreas Thomsen, Edgar Butwilowski, Paul Kuper and Mulhim Al-Doori

Automatic semantic labelling of 3D buildings based on geometric and topological information
Abdoulaye Abou Diakité, Guillaume Damiand and Gilles Gesquière
15:35-16:05 Coffee break
16:05-17:45 Session 3: 3D data structures and algorithms/simulations

Dubai 3D Soil Map
Adib AlMadani

3D Modelling and simulation of groundwater using 3D TEN and volumetric data model
Ishaku Bashir Yakubu

Multi-Resolution Models: Recent progress in coupling 3D geometry to environmental numerical simulation
Vasco Varduhn, Ralf Mundani and Ernst Rank

Crisp clustering algorithm for 3D geospatial vector data quantization
Suhaibah Azri, Francois Anton, Uznir Ujang, Darka Mioc and Alias Abdul Rahman

A GIS database engine for linking calculation and storage
Chen Wu, Qing Zhu, Weiping Xu, Yeting Zhang, Xiao Xie, Feng He and Yan Zhou
17:45-18:30 Coffee break and poster session
20:00 Conference Dinner
Short: 10 minutes (incl. discussion) Regular: 20 minutes (incl. discussion)

Day 2 (13 Nov 2014)

8:00-9:00 Registration
9:00-9:50 Session 4: Change detection of city models

Change detection in CityGML documents
Richard Redweik and Thomas Becker

Change detection of cities
Frédéric Pédrinis, Maxime Morel and Gesquiere Gilles

Modelling urban changes using time series of virtual 3-D city models (short presentation)
Ján Kaňuk, Jaroslav Hofierka and Michal Gallay
9:50-10:30 Session 5: Geosensor networks

A perspective view-based approach to determine the GeoSensor coverage In 3D vector environments
Ali Afghantoloee, Saeid Doodman, Farid Karimipour and Mir Abolfazl Mostafavi
Advances in monitoring of structures by an integrated analysis of sensor measurements and 3D building model
Thomas Becker, Sven Weisbrich, Cheng-Chieh Wu and Frank Neitzel
10:30-11:00 Coffee break
11:00-13:00 Session 6: Indoor navigation

Requirements on building models enabling the guidance in a navigation scenario using cognitive concepts
Katrin Arendholz and Thomas Becker

Fixating on adequate landmarks
Pepijn Viaene, Kristien Ooms, Pieter Vansteenkiste, Matthieu Lenoir, Alain De Wulf and Philippe De Maeyer

Context aware indoor route planning using semantic 3D building models with cloud computing
Aftab Ahmed Khan, Zhihang Yao and Thomas H. Kolbe

A multi-step transformation process for automatically generating indoor routing graphs from semantic 3D building models
Aftab Ahmed Khan, Andreas Donaubauer and Thomas H. Kolbe

RFID-based mobile positioning and navigation system design for 3D indoor environment
Emrullah Demiral, Ismail Rakip Karas, Muhammed Kamil Turan and Umit Atila

3D indoor navigation prototype for smartphones
Yasin Ortakci, Ismail Rakıp Karas and Alias Abdul-Rahman
13:00-14:30 Lunch break
14:30-16:20 Session 7: 3D applications and best practice

Modeling historic site as parametric model. Application to the Engelbourg castle - Thann, France
Mathieu Koehl and Jimmy Fedczyszyn

From geological exploration to 3D geological and numerical models (short presentation)
Tatjana Kuehnlenz, Herbert Kunz, Detlef Schlueter, Joerg Hammer and Juergen Hesser

Comparing geomorphic systems using graph algebra on dual graphs - first results and further research questions
Marc-Oliver Löwner and Thomas Becker

Exploring the benefits of 3D city models in the field of urban particles distribution modelling - a comparison of model results
Yahya Ghassoun, Marc-Oliver Löwner and Stephan Weber

The role, opportunities and challenges of 3D and geo-ICT in archaeology
Berdien De Roo, Jean Bourgeois and Philippe De Maeyer

3D modelling with national coverage bridging the gap between research and practice
Jantien Stoter, Carsten Roensdorf, Rollo Home, David Capstick, Andre Streilein, Tobias Kellenberger, Eric Bayers, Paul Kane, Josef Dorsch, Piotr Woźniak, Gunnar Lysell, Thomas Lithen, Benedicte Bucher, Nicolas Paparoditis and Risto Ilves
16:20-16:50 Coffee break
16:50-18:30 Session 8: Visualization and evaluation

Out-of-core visualization of classified 3D point clouds
Rico Richter, Sören Discher and Jürgen Döllner

Prototyping information visualization in 3D city models: A model-based approach
Claudine Metral and Gilles Falquet

Modeling visibility in 3D space: a qualitative frame of reference
Paolo Fogliaroni and Eliseo Clementini

Investigating integration possibilities between 3D modeling techniques
Efi Dimopoulou, Eva Tsiliakou, Vasso Kosti, George Floros and Tassos Labropoulos

Automatic control of buildings' zoning regulation compliance based on LIDAR-delived models (short presentation)
Umit Isikdag and İsmail Buyuksalih

Enabling Geo-design: evaluating the capacity of 3D city model to support thermal design in building (short presentation)
Ihab Hijazi, Muhannad Haj Hussein and Reinhard Koenig
18:30-18:45 Closing session
18:45 Farewell party
Short: 10 minutes (incl. discussion) Regular: 20 minutes (incl. discussion)

Optional Oracle Workshop (11 Nov 2014)

Title Storage and Management of Large Scale Point Cloud Data

Point cloud data are important sources for 3D geo-information. The point cloud data sets are growing in popularity and in size. Modern Big Data acquisition and processing technologies, such as laser scanning from airborne, mobile, or static platforms, multi-beam echo-sounding have the potential to generate point clouds with millions or billions (or even trillions) of 3D points. Often these 3D data have one or more attributes associated with each point. This is especially true with the available and expected repeated scans of same area (the temporal dimension). These point clouds are too massive to be handled efficiently by common geo-ICT infrastructures. At the database level, initial implementations are available in both commercial and open source database products, illustrating the user need for point cloud support; e.g. Oracle spatial’s SDO_PC data type and PostgreSQL/PostGIS PCPATCH data type. Given the huge volumes of point cloud data, performance is critical, both with respect to data storage/ transfer size and to speed (for loading and querying). Therefore, it will be a real challenge to make an efficient implementation.

In this workshop, we present several methods to efficiently store and manage these massive point cloud data sets in a database. The way point cloud data is stored on the disk plays a major role in the query performance against these data sets. We will discuss several techniques including space filling curves based ordering to show the need for efficient organziation of data on the disk for good load and query performance. We discuss several storage models query models to show how databases can help efficiently manage these large volumes of data. The queries on point clouds often use non spatial attributes (time stamp, intensity, color, etc) to filter the data and hence databases are ideally suited for supporting such queries.

We also present some file based alternatives to compare and contrast the database solution for the point cloud data management.

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