Amrita School of EngineeringAmrita Vishwa Vidyapeetham

Tool for Indoor InformationExtraction and Representation

Dr.Vidhya BalasubramanianDr.Latha Parameswaran

Ms.V.Smrithi Rekha@

RESEARCH PROJECT PROPOSAL PRESENTATIONICGTA 2012

12-4-2012: IIT Bombay

Amrita School of EngineeringAmrita Vishwa Vidyapeetham

Motivation

http://blog.mallofamerica.com/wp-content/uploads/2011/11/New-Picture-1-389x313.png

http://bdnooz.com/lbs/wp-content/uploads/2009/11/indoor-navigation.jpg

http://www.renesas.com/media/edge_ol/feature/07/img_01.jpg

Amrita School of EngineeringAmrita Vishwa Vidyapeetham

Introduction Indoor Information Systems essential for

Asset management Emergency Response Facilities Management Indoor Navigation

Require Queryable indoor spatial datasets Indoor data management

Indexing and Querying Indoor data visualization

Amrita School of EngineeringAmrita Vishwa Vidyapeetham

Goal of this Proposal Develop a tool for designing an indoor information

system which will use existing open source GIS tools and Indoor GML standards

Supports user interactions to input CAD maps/raster maps of the building add information related to the building and entities inside

the building through an interactive interface Technical functionalities

Extraction of features from the map Represent the indoor data using Indoor GML Visualization and Querying based on Indoor GML

Evaluate IndoorGML's suitability to represent different layers or data and semantic information efficiently

Amrita School of EngineeringAmrita Vishwa Vidyapeetham

Proposed System

Amrita School of EngineeringAmrita Vishwa Vidyapeetham

Need for Indoor Spatial Data Existing building maps

CAD format Polygons may not be closed, room identification difficult CAD Annotations difficult to work with

Raster maps (old buildings) Extracting rooms etc requires complex processing

Need to convert them to GIS formats Extract room and other information and layer them

Querying more easier Users can edit/correct maps more easily Adding information/layers more easy

Add more metadata and represent using GML

Amrita School of EngineeringAmrita Vishwa Vidyapeetham

Indoor Spatial Data

Layer Geometric Entities or ObjectsINTERIORS Lines representing interiors of buildings

EXTERIORS Long lines representing exteriors lie compound walls, corridors etc.,

DOORS Line segments representing parts of doors

WINDOWS Line segments representing windows of the rooms

TEXT This includes the names of the rooms eg., drawing room

BRDR 1-9 These are the lines that include additional details about the border lines.

ARCS These include the information about the arcs representing the direction of opening the doors

Amrita School of EngineeringAmrita Vishwa Vidyapeetham

CAD to IndoorGML

CAD Feature Extraction

Convert to Shape files

Indoor GML Representation

<Feature   fid="142" featureType="room"  Description="A403">

        <Polygon name="extent" srsName="epsg:27354">

            <LineString name="extent" srsName="epsg:27354">

                <CData>

                  491.99, 545.99 458,545.99

                  491.99, 545.99 491.1, 545

                </CData>

            </LineString>

        </Polygon>

</Feature>

Amrita School of EngineeringAmrita Vishwa Vidyapeetham

Indoor Data Management Representing using IndoorGML

– Representing connectivity and proximity– Representing multiple layers

• Spatial and semantic information Indoor Data Indexing

– Explore existing spatial data indexing techniques for indoor data

Query Support

Amrita School of EngineeringAmrita Vishwa Vidyapeetham

Query Support● Standard Queries

● Point queries, region queries, range queries, attribute based queries etc

● Proximity queries● Path Finding ● Object related queries

● How many chairs can be placed in this room?● Is this object movable into Room A304

Amrita School of EngineeringAmrita Vishwa Vidyapeetham

References Ron Lake, Introduction to GML,

http://www.w3.org/Mobile/posdep/GMLIntroduction.html Ki-Joune Li and Jiyeong Lee, “Indoor Spatial Awareness Initiative

and Standard for Indoor Spatial Data”, IROS 2010 3DIM Indoor Special Session, Dec 2009 OGC Meeting Slides “OpenGIS® City Geography Markup Language (CityGML)

Encoding Standard”, Open Geospatial Consortium Inc, OGC08-007r1, 2008

Amrita School of EngineeringAmrita Vishwa Vidyapeetham

Suggestions....

Amrita School of EngineeringAmrita Vishwa Vidyapeetham

Prior WorkITR-Rescue (UCI, Calit2)DrillSim

multi-agent evacuation simulator for indoor spaces MetaSim

integrated simulation platform Multiple simulators on a single platform to simulate

large disaster response scenarios Multi-Geography Path planning and representation

Amrita School of EngineeringAmrita Vishwa Vidyapeetham

DrillSim and MetaSim