Results of

OGC Web Services, Phase 2 (OWS2)

Interoperability Testbed

George Percivall

Open Geospatial Consortium

Executive Director, Interoperability Architecture

percivall@opengeospatial.org

Presented to ISO TC211 Standards Tutorial

3 October 2004

OGC

The Open Geospatial Consortium Vision

A world in which everyone benefits from geographic information and services made

available across any network, application,

or platform.

OGC

What is OGC?

• Open Geospatial Consortium (OGC)

– Not-for-profit, international voluntary

consensus standards organization

– 261 industry, government, and university

members

– Founded in 1994, with 8 Charter members

MissionOGC Leads a

proven process to develop, harmonize and promote the use of open and freely available geoprocessing

standards throughout the

global community.

OGC

Iterative DevelopmentYielding Tested Specifications

Interoperability

Program

Specification

Program

Outreach

Program

Interoperability

Reports

Adopted

Specifications

Holes and

Enhancements

SCOTS

Implementations

Prototype

ImplementationsRequirements

OGC

OWS-2 Mission

Build on work from previous OGC initiatives and technical working groups to "ruggedize" and extendexisting and draft OGC standards into a robust and

complete interoperability framework for implementation within a multi-vendor enterprise and to

achieve interoperability between enterprises for geoprocessing solutions in government and business.

OGC

Thanks to OWS2 Sponsors

National Aeronautics and Space Administration

US Geological Survey

Lockheed Martin

Federal Geographic Data Committee

Questerra

BAE Systems

SUN Microsystems

Spot Image

others …….

OGC

OWS2 Threads and Demos

GeoScout

Common Architecture

Image Handling for Decision Support

Compliance & Interoperability Testing & Evaluation

OpenLS

Information Interoperability

Defense

Demo

Natural

Resources

Demo

OGC

Common Architecture

Mission: The objective of CA is to define a consistent adaptation and integration of Web Services standards, defined by leading organizations such as W3C, OASIS, Microsoft, IBM, Sun Microsystems, and the open-source community, with the OWS service framework in general and the set of core OGC specifications (WMS, WFS, CS-W, and WCS).

• OWS-2 Work Items

– SOAP and WSDL for WMS, WFS, WCS and CS-W

• Define SOAP profiles for the services

• Define WSDL for HTTP get/put profiles

• Develop WSDL for SOAP profiles

• Develop reference implementations of services using SOAP profiles

– Experiments using UDDI to discover OGC Web Services

– Identify and document any changes required to common architecture or specifications

OGC

Information Interoperability / GeoScout

Mission: Enable the interoperable expression, exchange and access of

geographic information within and across information communities

(Information communities are groups that share common geographic terms and

common spatial feature definitions). Promote the development of SCOTS

products that implement these capabilities.

• OWS-2 Work items

– Develop techniques for creating application specific information models

from a common model

• Create application schemas from UML models

• Create application schemas from GML schemas

– Extend SCOTS products to support application schemas

OGC

Developing GML Application Schemas from UML Data Models

• UGAS (UML to GML Application Schema) tool generated

GML Application Schemas from UML models

• Appropriate where a data model already exists

• Provides a repeatable automated process for generating

application schemas

• However: UGAS does identify flaws in your UML model.

Be prepared to do several iterations as you fix your model.

http://www.interactive-instruments.de/ugas

OGC

UGAS (AKA ShapeChange) Context

UML

Model

Output

Schema

UML to

GML Type

Mapping

UGAS

OGC

Schema Subsetting

• Galdos Schema Subsetting tool allows users to create

subsets and extensions of an existing GML Application

Schema

• Appropriate where there is an existing application schema

that can be customized

• Process:

– Start tool

– Open existing schema

– Move desired portions into new schema space

– Save the new application schema

OGC

Schema Subsetting Work Flow

GML Application

Schema

Schema

Subsetting Tool

GML Application

Schema

Information

Requirements

OGC

Application Schema Results

• Creating Application Schemas was the biggest task– Application Schema generation requires careful data engineering

You will need experts!

– Inconsistencies exist between data models, product specs, GML, ISO models, and data

• Many and long discussions on resolutions

• Resolutions based on schedule and capability constraints

– Ambiguities in specs and models become apparent

– Rules for subsetting/translating between schemas can be complex

– Easy to design an application schema that SCOTS products cannot use

• Once the data engineering is done, the tools work– UGAS - provides repeatable model driven approach

– Subsetting - unconstrained modification or creation

OGC

OWS-2 Web Service Components

WFSWFS

IntergraphESRI

WMS

Intergraph

H HTTP

ESRI

WCS WCS

H

SPOT Interactive

InstrumentsESRI Global

Mosaic

HH

WFS-T

Intergraph

GML 2

H H H

WMS

Intergraph

H

OGC

II/GS Summary

• Tools and techniques for developing GML Application

Schemas of NGA data products exist and they work

• SCOTS vendors are capable of accessing and using data

delivered in those application schemas

• SCOTS vendors are not able to post updates to a WFS-T

using those application schemas at this time

– User definition of topology use cases required

• Results will be provided to WFS 1.1 Working Group

OGC

Compliance and Interoperability Testing and Evaluation (CITE)

Mission: Develop conformance tests and reference implementations

for the core set of the OWS Technical Baseline that include: WMS,

WFS, CS-W and WCS

• OWS-2 Work items

– Develop test suites for:

• Web Map Service 1.3

• Web Feature Service 1.1

• Web Coverage Service 1.0

• Catalog Service 2.0

– Develop Reference Implementations of:

• Web Coverage Service 1.0

• Catalog Service 2.0

OGC

CITE System Architecture

OGC

OpenLS

Mission: The OGC Location Services (OpenLS) represent an open (middleware)

platform for location-based application services for mobile assets and

terminals. The primary goal of the OpenLS initiative series is to define the

specifications for the “Core Services and Abstract Data Types (ADT)” that

comprise this platform.

• Work Items:

– Positioning Service Modifications/Enhancements

– Develop Location Refinement Service

– Develop Navigation Service

– Presentation Service Enhancements

OGC

Image Handling for Decision Support

Mission: Use and, where appropriate, define and enhance interoperability specifications to increase the availability and usability of geographic imagery, enabling the use of information derived from imagery to be used with all other forms of geographic information by decision support tools and systems to derive information that enhances the human capacity to make decisions.

• OWS-2 Work items

– Demonstrate use of WCS 1.0 to access and handle images from NASA Synergy Data Pool image archive

– Exercise Imagery Metadata standards

– Develop enhancements to WCS

– Develop image processing services

• Web Coordinate Transformation Service (WCTS)

• Web Image Classification Service (WICS)

– Integrate OWS services into an automated workflow

OGC 21

Helping the World to Communicate

Geographically

Helping the World to Communicate

Geographically

…

WCS (NASA Data Pool)

WCTS

(Producer-B, Vendor-2)

WICS (Producer-C,Vendor-3)

WFS (Producer-n, Vendor-x)

Internet

Web Servers

OGC

Interfaces

Service chaining creates

Value-added products Decision Support

Client

OWS2 Image Handling for Decision Support

OGC

OWS2 Threads and Demos

GeoScout

Common Architecture

Image Handling for Decision Support

Compliance & Interoperability Testing & Evaluation

OpenLS

Information Interoperability

Defense

Demo

Natural

Resources

Demo

OWS-2

Natural Resources

Scenario

2 September 2004

OGC

OWS2 NR Demo Project Team

• Sponsors– NASA

– Spot Image

– USGS

• Management Team– OGC Staff

– Lockheed-Martin

– BAE Systems

– Image Matters

– Ecosystem Associates

• Participants– GMU

– Intergraph

– PCI

– Raytheon

– Ionic

– Galdos

– Oracle (was Collaxa)

– UAH VAST

– UAH ITSC

– ITT (was Kodak)

OGC

Scenario

This discussion will take place in the context of a real event. Between October 25 and November 5, 2003, fires

burned 336,978 acres in San Diego County, California. The following activities could have been executed as part

of the fire fighting efforts.

• Decision support using existing OGC specifications

– Web Browser - Thin Client

– Decision support application - Thick Client

• Decision support using value-added products produced using OWS2 technology developments

– Image processing services

– Workflow automation

OGC

Task 1: Assess Damage with Post-Fire Imagery

GMU

WFSWCS

1.0.0

Intergraph PCI

CSWWMS

H

NASA Data Pool

•MODIS

•ASTER

SPOT

• SPOT

CubeWerx

• Space Imaging

GMU

• AIRDAS

- MODIS

Intergraph

H HTTP

FEMA Hazardmaps

NASA WMS Global Mosaic

H

Galdos

Ionic

S SOAP

ITT(Kodak)

Ionic Galdos

CPSS

WMS Context

H

H

Identify burn scar fire damage.

–Search by service and location for relevant imagery

–Portrays post-fire imagery as a picture in thin client

–Save as WMS Context and mail to Resource Manager

OGC

Task 2: Analyze Terrain Effects

GMU

WFSWCS

1.0.0

Intergraph PCI

CSWWMS

H

NASA Data Pool

•MODIS

•ASTER

SPOT

• SPOT

CubeWerx

• Space Imaging

GMU

• AIRDAS

- MODIS

Intergraph

• VMAP1

H HTTP

FEMA Hazardmaps

NASA WMS Global Mosaic

H H

Galdos

Ionic

S SOAP

ITT(Kodak)

Ionic Galdos

S

Assess influence of terrain on fire

conditions using Decision Support Client

(Thick Client) to inspect descriptions of

imagery, access image archive and view

imagery

OGC

ITT Client Adaptor - DescribeCoverage

OGC

Spot DEM and Spot MSS

OGC

ITT ENVI Decision Support Client

OGC

Work Accomplished in OWS-2

• Enhanced WCS (WCS+)

– Return a file or return a reference to the file in a repository

– Multiple-measurements and multi-band requests

– Multi-file attachments

• Enhanced Metadata for Imagery Discovery and Processing

• New Image Processing Services

– Web Coordinate Transformation Service (WCTS)

– Web Image Classification Service (WICS)

• New workflow automation capability

– Business Process Execution Language (BPEL)

– Workflow Chaining Service - WfCS

OGC

OWS-2 IH4DS Web Clients and Services

GMU Intergraph PCI

WfCS

H HTTP binding

WCS+

H

NASA/Raytheon/Ionic

•MODIS

•ASTER

WICS

GMU

H

WCTS

GMU

H

WCS+

H

Spot/Ionic

• SPOT

WCS+

H

GMU

• AIRDAS

- MODIS

WCTS

PCI

H

Oracle/Integraph

Data

Services

Processing

Services

Workflow/task

Services

Client

ApplicationsITT

(Kodak)Ionic

OGC

NASA/Raytheon/Ionic

•MODIS

•ASTER

Task 3: Inspect Complex Imagery Products

GMU Intergraph PCI

WfCS

H HTTP

WCS+

H

WICS

GMU

H

WCTS

GMU

H

WCS+

H

Ionic/Spot

• SPOT

WCS+

H

GMU

• AIRDAS

- MODIS

WCTS

PCI

H

Oracle/Intergraph

Inspect “during-fire” imagery from NASA MODIS (MOD02)

containing multiple measurements, each with multiple band

•Accesses NASA MODIS (MOD02) imagery using WCS+

•Request multiple bands from multiple measurements.

•Display the visual bands. Fire location is obscured.

•Display thermal data. Hot spots show up as bright spots

OGC

Multi-measurement WCS

OGC

Task 4: Detect and Map Fire Perimeter

• Task

– Identify geographic coordinates of active fire

– Web Image Classification Service (WICS)

– Group and label similar pixels of an image

• Input image has radiance or reflectance values for each pixel

• Classification assigns each pixel to particular class or label

– Input image is ASTER Thermal IR product

• OGC Technology

– New service: WICS developed using OWS common elements

• Un-supervised classification is demonstrated

• Supervised classification discussed in deliverable report

– Input to WICS from source WCS

• GMU WICS demonstration

– Client allows specifying WICS parameters:

• Source URL, Source Format, Target, # of Cluster, Max Iterations

– WICS Service

OGC

NASA/Raytheon/Ionic

•MODIS

•ASTER

Task 4: Detect and Map Fire Perimeter

GMU Intergraph PCI

H HTTP

WCS+

H

WICS

GMU

H

WCTS

GMU

H

WCS+

H

Ionic/Spot

• SPOT

WCS+

H

GMU

• AIRDAS

- MODIS

WCTS

PCI

H

WfCS

Integraph/Oracle

Identify geographic coordinates of active fire using Web Image Classification Service (WICS) to group and label similar pixels of an image

OGC

WICS Input: multi-band ASTER

OGC

WICS Output: Classified Coverage

OGC

Task 5: Prepare Image for DS Client

GMU Intergraph PCI

WfCS

H HTTP

WCS+

H

WICS

GMU

H

WCTS

GMU

H

WCS+

H

Ionic/Spot

• SPOT HLS

• SPOT DEM

WCS+

H

GMU

• AIRDAS

- MODIS

WCTS

PCI

H

Intergraph/Oracle

NASA/Raytheon/Ionic

•MODIS

•ASTER

Change Coordinate Reference System (CRS) of an image

where input is Image in Source CRS (EPSG:4326) and output

is image in Target CRS (UTM-Z11= EPSG:32611)

OGC

Orthorectification with WCTS

PCI

WCTS

H

SPOT

WCS+

HDEM

(GeoTIFF)2.4

SPOT

WCS+

H

PCI

WebClient

& Geomatica

2

DIMAP

RawImage

(GeoTIFF)2.1

2.2

2.3

Transform(inputData=aURL,

sourceCRS=“ImageCRS”,

targetCRS=“32611”,

format=“GeoTIFF”,

GML.Transformation[DEM, DIMAP,

resX, resY, bandList])

1

Orthophoto

(GeoTIFF)

2.5

A URL to resulting

orthorectified GeoTIFF

1.1

Get Coverage at URL3

OGC

Task 6: Expert User Builds a Service Chain

• Task: Automate image processing

– In advance of actual fire, expert develops automated script for use

during fire management response

– Expert develops a valid script that creates a value-added product

• Open Standards Technology

– BPEL = Business Process Execution Language

– BPEL development in OASIS consortium

– Applicable to broader web services industry, not geospatial specific

• Intergraph demo using Oracle components

– Use Designer to build a BPEL script

– Use Process Manager to execute BPEL script

• Workflow Chaining Service (WfCS)

OGC

Hot-Spot Detection Flow

Intergraph

DSClient

Raytheon

WCS+

H

PCI

WCTS

H

GMU

WICS

H

WfCS

GMU

WCTS

H

GMU

WCS+

H

DS_Client WCS➔ GMU(HDF-EOS)➔ WICS➔ HDF-EOS➔WCTS➔ GeoTIFF➔ DS_Client

HDF-EOS2.1 3.1 4.1HDF-EOS3.2

GeoTIFF/

NITF

4.2

1 startFlow

2getCoverage

3getClassification

4Transform

5endFlow1.1

SPOT

WCS+

H

OGC

A BPEL Composite Service

WCS:

Get ASTER

Thermal Bands

WICS:

Classify ASTER

Thermal into 3

categories

WCTS:

Re-project classified

coverage to UTM

Zone 11.

Client

Invokes “HotSpot”

service (implements

GetCoverage request)

A Composite

Service (a BPEL

script)… …of these Image

Handling Services

OGC

Inside the HotSpot BPEL Composite Service

Receive input request from client.

WCS: Get ASTER Thermal BandsGetCoverage(boundingBox,coverageID,width,height,store=true,format=HDF/

EOS, measurename=“ImageData12, Imagedata13, ImageData14”,

BBOX,CRS=Lat/LonWGS84)

WICS: Classify ASTER Thermal into 3 categories. GetClassification(source=HDF/EOS, 3 clusters, target=HDF/EOS,

sourceURL)

WCTS: Re-project classified coverage to UTM Zone 11Transform(inputData=URL, outputFormat=GeoTIFF, inputCRS=“4326”,

outputCRS=“EPSG:32611”, resX=300, resY=300)

Returns classified and re-projected GeoTIFF!

OGC

Task 7: Decision Maker reviews Value-added Results

GMU Intergraph PCI

WfCS

H = HTTP WCS+

H

NASA/Raytheon/Ionic

•MODIS

•ASTER

WICS

GMU

H

WCTS

GMU

H

WCS+

H

Ionic/Spot

• SPOT

WCS+

H

GMU

• AIRDAS

- MODIS

WCTS

PCIH

WMS

FEMA Hazardmaps

WMS Global Mosaic

H

WFS

Intergraph

H

Identify Burn Areas and Assess Damage

– Integrate results from multiple services for

decision support

– Pull-in burning areas image from service chain

and display

– Add geospatial data from multiple sources to

map display WfCS

-Oracle/Intergraph

-GMU BPELpower

OGC

Decision Support Client accessing Multiple OWS Sources

OGC

Decision Support Client accessing Web Service Chain

OGC

Decision Support Client Displaying Service Chain Result

OGC

Exciting Development During Demo Preparation…

• Demonstrated portability of BPEL

• Intergraph

– BPEL document built with Oracle Designer and executed with

Orchestration Server

• GMU

– Same BPEL script is used in their BPELpower orchestration server

to execute service chain

• Power of open standards!

OGC

OWS-2 IH4DS Products

• Image Metadata IPR

– Describe Image Metadata Schema

– Submit for consideration as an OGC Specification and/or

recommendation paper

• WCS Change Request(s)

– Return a file or return a reference to a datastore

– Multiple-measurements

– Multi-file attachments

• Web Image Classification Service IPR

• Web Coordinate Transformation Service IPR

• Discussion Paper for Service Chaining with BPEL

OGC

OWS2 Threads and Demos

GeoScout

Common Architecture

Image Handling for Decision Support

Compliance & Interoperability Testing & Evaluation

OpenLS

Information Interoperability

Defense

Demo

Natural

Resources

Demo

OGC

Questions?

George Percivall

Executive Director

Interoperability Architecture

percivall@opengeospatial.org

1+ 301-560-6439

Open Geospatial Consortium, Inc

www.opengeospatial.org