Multisource Data Integration to prepare Interactive 3D Model of Kathmandu University

Group Members:
Biplov Bhandari (04)
Archana KC (09)
Upendra Oli (19)
Niroj Panta (20)
Uttam Pudasaini (22)
Supervisors:
Shashish Maharjan
Ganesh Dhakal
Multisource Data
Integration To Prepare
Interactive 3D Model Of
Kathmandu University
Final Presentation on:
Dated on: Friday, July 12, 2013

Presentation Outline
Monday, August 18, 2014
Multisource Data Integration to Prepare The Interactive 3D Model of Kathmandu University
2
 Introduction
 Rationale
 Objectives
 Resources Used
 Methodology
 Outcomes
 Work schedule
 Conclusion and Recommendation

Description Of The Project Title
3
Multisource Data Integration to Prepare a Interactive 3D Model of Kathmandu
University
 Spatial data acquired from different heterogeneous sources are being input
into a common data base
 The use of different data sources
brings along many challenges.
 For example, multiple data
formats, various accuracies,
coordinate systems and level of
details must be taken into
consideration

4
Multisource Data Integration to Prepare a Interactive 3D Model of
 A digital representation of
features, either real or
hypothetical, in three-
dimensional space
 3D models represent a 3D
object using a collection of
points in 3D space, connected
by various geometric entities
such as triangles, lines, curved
surfaces, etc

5
A 3-Dimensional representation of landscape
and inanimate feature of Kathmandu
University
Overlay of Photorealistic features made using
Google Sketch UP over the 3D terrain made
using Arc GIS(Arc map and Arc Scene)
complete the model
Projection System details:
Projected Coordinate System:
MUTM Central 87, False
Easting= 500000, False
Northing=0, Scale
Factor=0.9999,Linear Unit
=meter
Geographic Coordinate
System : GCS Everest
Bangladesh, Prime Meridian:
Greenwich, Angular
Unit=Degree
How were we able to synchronize the
various file formats??

6
Some Common 3D File Formats
ABC – Alembic (Computer Graphics)
BLEND – Blender(.blend)
CTM – OpenCTM(.ctm)
DAE – COLLADA (.dae)
MRC – voxels in cryo-electron
microscopy
U3D – Universal 3D file format (.u3d)
VRML97 - VRML Virtual reality modeling
language (.wrl)
COLLABORATIVE DESIGN ACTIVITY
 An open-standard XML format for
storing 3D models.
 Often used as an interchange format
for 3D applications.
 Also format for 3D textured objects
stored inside KML.
 File extension: .dae (digital asset
exchange)
 Exporting multipatch features to
COLLADA allows sharing of complex
analysis results with others and also
provides a mechanism for updating
textured 3D GIS data, such as buildings,
using third-party software like
SketchUp

7
Computerized maps that allow users to interface
with various aspects of the maps themselves.
Offers following major options to the map user
 Zooming in or out on a specified location,
 Panning easily between geographic areas
 planning driving routes and Geocoding
 Providing street/satellite views of a desired
locale.
 Permitting professionals the ability to interact,
update, and make changes to the maps in real
time.

8
Introduction
 Rationale
 Objectives
 Resources Used
 Methodology
 Outcomes
 Work schedule
 References

Rationale: Why This Project
9
Kathmandu University being the leading institution of Nepal doesn’t have any
means to disseminate the University map portals among its visitors, students
and other stake holders
The two dimensional master plan without any spatial reference is still serving as
the tool to visualize the spatial position of the University components
So a necessity of three dimensional map was felt which could serve as a tool to
visualize all the features along with the terrain in digital form with the web
access.

10
Introduction
Rationale
 Objectives
 Resources Used
 Methodology
 Outcomes
 Work schedule
 References

Objectives Of The Study
11
The main objective of the study is to prepare the 3D virtual model of the
Kathmandu University showing the photo realistic buildings, roads, boundary,
and other living as well as the inanimate features.
• To integrate the spatial data obtained from the heterogeneous sources.
• To prepare a Geo database of Kathmandu University
• To prepare the interactive map where users can request different aspects of
map viewing.
• To upload the interactive map on the web portal for multi user access as a
means of map dissemination.
The main objectives are followed by following sub objectives:

12
Introduction
Rationale
Objectives
 Limitations
 Methodology
 Outcomes
 Work schedule
 References

Limitations Of The Study
13
This study has been undertaken in the view of meeting the partial fulfillment of the
Engineering Project, GEOM 307. The study had to be completed within the limited
time frame and resource limitations.
1.Resource limitation:
The limited budget constrained for the quality data, high precision
instruments i.e. Satellite Images and good working environment
i.e. High speed internet, (For downloading the textures, Images and Google
Earth Integration)
High computer processors (For simultaneous use of various software )

14
Introduction
Rationale
Objectives
Limitations
 Methodology
 Outcomes
 Work schedule
 References

Software used
15
Sketch Up-For creating 3d inanimate features like buildings, pole, playground
etc.
Google Earth- Georeferenced Google images are good source for positional
data of features like trees, vegetation etc.
Arc Map V.10.0 Cad to Geodatabase conversion and preparation of all 2d
map layers
Arc Scene V.10.0 Preparation of 3D terrain and integration of the models
prepared in Sketch Up to produce a model.
AutoCAD Civil 3D Land Desktop Companion 2009 Editing and extractions of
annotation data from AutoCAD drawing of the university

Work Flow Diagram
16
3D MODEL OF
TERRAIN
KU Land Survey July
2010
Multipurpose Cadastral Data,
Banepa Office
Google Earth Image Of University Area
AutoCAD plan of
buildings and
other features
CAD Models
To Sketchup
MODELS TO
SKETCH UP
Creation Of 3d
Features In
Skecth Up
IMPORT SKETCHUP
MODELS TO ARC
SCENE
3d Models(buildings+
roads+ other Man
Made Features)
3D MODEL OF FEATURES
3D Model Of
KU

17
3D Model Of
KU
Adding Interactive Options
(Interactive Map)
Upload To Web

Data Integration Procedure
18
AutoCAD plan (CED 2010)
 Cad to Geodatabase conversion
 Differentiating individual layers of whole features
AutoCAD master plan of KU Geodatabase in Arc Map

19
Multipurpose Cadastral Survey-digital Cadastral Office, Banepa
 Accurate positioning of building footprints and roads

20
Google earth images
 Images were georeferenced and used for creating features like trees,
vegetation

21
 Sketch Up Modelling
An open source software provided by Google and is mainly used for 3D
modeling and sharing.
Mainly used for 3d city modeling in the Google Earth
We used this software to develop our 3D models of the KU buildings.
Tools we used

Photorealistic Models
22

Buildings constructed using Auto CAD plans
6/21/201323
MULTISOURCE DATA INTEGRATION TO PREPARE
INTERACTIVE 3-D MODEL OF KATHMANDU
UNIVERSITY

24

Multisource Data Integration to Prepare The
Interactive 3D Model of Kathmandu University
25
Features made without using AutoCAD
plan
Ku triangle

26

27

28

29
Arc map
 One of the 3 main component that
make up ArcGIS.
 An interface that allows users to
view data sets together,
perform analysis and create maps
 All 2d mapping works were performed
in Arc map Version 10
 Arc map version 10 provides an easy
interface for mapping functionality
Arc Scene
 A software to visualize features
in 3D by providing height
information from feature
geometry, feature attributes,
layer properties, or a defined
3D surface (such as a digital
elevation model, or DEM)
 Arc Scene version 10.0 have
got advance 3d editing tools
2D Editing 3D Editing
3D Terrain Modeling Using GIS Package: ArcGIS V10.0

30
2D EDITING AND MAPPING-ARC MAP
Cad to Geodatabase
Reads a CAD dataset and creates feature classes of the drawing. The feature classes are
written to a Geodatabase feature dataset.

31
Final 2D map with all information

32
TIN representation of the terrain
 TINs are a form of vector-based digital geographic data and are
constructed by triangulating a set of vertices (points).
 The vertices are connected with a series of edges to form a
network of triangles following Delaunay triangulation

33

34
INTERACTIVE TIN EDIITNG
 The resulting triangulation satisfies the Delaunay triangle criterion
 No vertex lies within the interior of any of the circumcircles of the
triangles in the network.
 If the Delaunay criterion is satisfied everywhere on the TIN, the
minimum interior angle of all triangles is maximized.
 The result is that long, thin triangles are avoided as much as possible.

35
3d Editing - Arc Scene
 Arc Scene allows 3D editing environment and offers more edit tool
options specific to multipatches
 Editing in 3D is designed to work with the 3D Analyst extension in
ArcScene
 3D editor tools are easily available from a dock able toolbar and a pull-
down 3D Editor menu
 All tools provide real-time surface feedback, which permits you to save
your edits directly back the document or undo your changes.

36

37
Multipatch feature
 A GIS object that stores a collection of patches to represent the boundary of
a 3D object as a single row in a database
 Contain 3D models with vertical and overhanging faces allowing the
creation of photorealistic 3D views.
 Can contain texture information, such as a digital photograph of the front of
a building.
 Is stored in the Geodatabase or shapefiles in the same manner as point,
line, and polygon data.

38
Fig: Multipatch representation of
Kathmandu University central library.
Fig: Multipatch representation of
Admin Block

39
 Locating the building exactly where it
has to be.
 Models are georeferenced with the
help of move tool.
Georeferencing 3D

40
Integration Of ArcScene and SketchUp

41
 Using Google API V3.
 Strong JavaScript Library.
 Coding is relatively easy to use and understand.
Why Google API v3?
Core objects: Map, Markers, Info Windows.
Custom Overlays, Controls, Tiles.
Geocoding.
Ground Overlays.
KML/KMZ Layers.
Interactive Web Mapping

42
Introduction
Rationale
Objectives
Limitations
Methodology
 Outcomes
 Work schedule
 References

43
The major outcomes of the project are:
Geo Database of Kathmandu University

44
Animated Map 3D : A video Clip
2D Animated Web Map:

45

46
Introduction
Rationale
Objectives
Limitations
Methodology
Outcomes
 Work schedule
 References

47
S.N Weeks
Activities
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
1 Project title discussion
2. Desk study and web browsing
3 Project title decision
4 Interaction with Supervisor
5 Proposal defense
6 Data collection
7 Data integration and 3D building
models preparation
8 3D model of terrain with features
9 Mid term presentation
10 Preparation of interactive web model
11 Final report preparation
12 Final presentation

48

49
Introduction
Rationale
Objectives
Limitations
Methodology
Outcomes
 Work schedule
 References

50
 Multisource data integration is often a complex task and involves the series
of coordinate transformation and file formats interpolability issues.
 The users of today’s era wants map to be more interactive and user
friendly.
 Accurate 3D modeling of the any geographical location first seeks the
quality data with completeness and correctness and also the excellent
working environment .
 Establishment of the web server is the effective means of disseminating
the maps among the variety of users .
 A complete 3D model can be build for better visualization and information
dissemination interiror.PNG
Conclusion and Recommendation

51
Introduction
Rationale
Objectives
Limitations
Methodology
Outcomes
 Work schedule
 Conclusion and Recommendation
 References

 Longley, P.A., Goodchild M.F., Maguire D.J. and Rhind D.W. (2005). Geographic
Information Systems and Science. Chichester: John Wiley & Sons.
 ReferencesCollaborative Mapping of London Using Google Maps: The LondonProfile
Maurizio Gibin, Alex Singleton, Richard Milton, Pablo Mateos, and Paul Longley.
 Campas project @ MIT placeMap: “Building community through active context mapping.
" Hockenberry, M. Gens, R., and Selker, T. (2005) To appear in proc. of ACM SIGGRAPH
'05 Web Application Program
 Google Api Documentation
 Mohammadi M. and Rajabifard, A. 2010. Development of an interoperable tool to facilitate
spatial data integration in the context of SDI, International Journal of Geographical
Information Science, Vol 20, No 7
 Mohammadi, H., A. Rajabifard, A. Binns, and I. P. Williamson. 2006. Development of a
framework and associated tools for the integration of multisource spatial datasets. 17th
UNRCC – AP (September 18 – 22). Bangkok, Thailand.
 http://blogs.esri.com/esri/arcgis/2012/01/05/making-a-large-scale-3d-map-part-1,2,3
Multisource Data Integration to Prepare The
Interactive 3D Model of Kathmandu University
52
References

53
 Ross, L., Kleinschmit, B., Döllner, J. and Buchholz, H., 2006. Automated Transformation of 2D
Vector-Based Plans to 3D Geovirtual Environments, In Buhmann, E.; Ervin, S.; Jorgeson,I. &
Strobl, J. (ed.) Trends in Knowledge-Based Landscape Modeling - Proceedings at Anhalt
University of Applied Sciences., Heidelberg (Wichmann), 2006, 138-144.
 Collaborative Mapping of London Using Google Maps: The LondonProfile Maurizio Gibin,
Alex Singleton, Richard Milton, Pablo Mateos, and Paul Longley. All authors are associated
with the Centre for Advanced Spatial Analysis (CASA) at UCL.
 Early Development in Vancouver: Report of the Community Asset Mapping Project (CAMP)
by Clyde Hertzman, Sidney A. McLean, Dafna E. Kohen, Jim Dunn, Terry EvansAugust 2002
 Web mapping - Wikipedia, the free encyclopedia
 Talk:Web mapping - Wikipedia, the free encyclopedia.
 Static Maps API V2 Developer Guide
 This document details the Static Maps API v2. To update your v1 URLs, please consult the
Upgrade Guide.
 Google Maps Image APIs
 Google Maps Javascript API V3 Events ,Note: The Google Maps Javascript API Version 3
documented within these pages is now the official Javascript API.
 Google Maps JavaScript API V3.

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