Building GIS from Imagery

Dynamic Spatial Models

Knowledge Bases

III. SET OF BLUEPRINTS

A B C

BLUEPRINT

II. POWER TOOLS

Spectral Processing Ortho-Rectification Feature Extraction Advanced Visualization

I. BUILDING MATERIALS

IMAGERYIMAGERY

Raster Vector Scalar Tabular Matrix

Inputs and Outputs

Viewing

Viewer

Geospatial Light Table Viewer

GPS Link Tool

Real-time image update

Real-time current location

Reads standard NEMA data format

                                                                                         

                                                         

Resolution Merge

25m Multi-Spectral

Spectral Resolution

10m Pan-Chromatic

Spatial Resolution

10m Multi-spectral

Mosaic

Cut (pieces are just ‘stuck’ together)

Cut/Feather entire overlap area

Cut/Feather by Distance

A

B

Default Cutline

Or you can cut along a user defined line

Advanced Mosaicking

Union

Area of Interest: Defined manually or by other feature layer

Map Series (USGS): User and predefined map sheets and databases used to select areas

Multiple ResolutionsMultiple Projections

Image MatchingColor Balancing

Surfacing

1973 1994

Image Difference

Identifying thematic change over time Identifying spectral change over time

Spectral Extraction

BlueGreenRedNear IRMid IR

Supervised and

Unsupervised

Building Signature Libraries

No Limit on Bands

MultibandImagery

Feature Extraction

Automated Feature Extraction

Use Seed Tool to identify and automatically map an area or feature of interest

Feature identified by defining a specific pixel value or range of pixel values

Once the value(s) are defined, all adjacent pixels of the feature are included in the ‘feature boundary’

Can be used as a signature

Unsupervised Classification

User selects number of desired land cover classes or categories

Computer employs an automated clustering algorithm called ‘ISODATA’

‘X’ number of desired categories are matched to ‘X’ most significant ‘pixel-value clusters’ in the imagery

Supervised Classification

User selects number of desired land cover classes or categories

User must then identify areas of interest within the imagery corresponding to each category

Each category based on the ‘spectral signature’ of image pixels within an Area of Interest (AOI)

1. Bare ground AOI1. Bare ground AOI

Supervised Classification

2. Wheat AOI2. Wheat AOI

3. Barley AOI3. Barley AOI

Build Complex Decision

Rules

Expert Classification

Output confidence is expressed as probability

Hyperspectral

Image Sources• AVIRIS • MODIS• GER, ESSI, CASI• NEMO• AIRES

Spectral Libraries• USGS - Mineral• JHU - Mineral• JPL - Mineral• DRI - Vegetation • CSIRO - Veg and man made• NIMA-SITAC - Military

DrawingTools

Editing Comman

ds

Symbol Librari

es

Advanced Cartography

Vector

IMAGINE Native Vector Features

• Arc/Info coverage data model built-in

• Shapefile and Interchange import/export

• Display, symbolization and query

• Edit tools for creating / updating coverages

Vector Module Features

• Vector format import / export to coverage

• Clean and Build topology

• Table Tool

• Zonal Attributes

• Other Utilities

Full Support for Coverage and Shape

Vector Creation and

Editing

Edits from Imagery

Complex Queries and Symbology

Supports SDE with Multiple

Attributes

Vector Editing and Creation

What You Need in Order to Analyze GIS Data in 3D

Elevation data

Fly-Throughs

Create a flight path Set look direction/focal points Set field of view View/edit flight path in 3D Output to a movie or VRML file

+ =

Image or Vector Data

Resample

TRANSFORMS:

• Affine

• Rubbersheet

• Polynomial

Traditional Rectification

Ground Control

Desktop Photogrammetry

Corrects for Sensor and Relief Distortions

Multiple Sensor Models Automatic Tie Points Complex Block Adjustment Rigorous Triangulation Full Support for GPS

Stereo Feature Extraction

Terrain and 3D Feature collection and compilation

Positioned as a “Digital Stereoscope”

Use of geo-referenced stereo-pairs

Collection and update of 3D vector data …SHAPE!

Collection and updates of elevation models

Automatic terrain following cursor

Collecting Data in Stereo

Position measurement Feature measurement Feature collection

Azimuths (strike) Slopes (dip)DistancesAreasAnglesHeight

VirtualGIS

VectorOrthoBASE

Pro

Toolkit

Radar

A Product Suite to Compliment Your GIS

StereoAnalyst

IMAGINEEssentialsIMAGINEAdvantageIMAGINEProfessional

Applications In:

Academia Agriculture Archeology Biology Cartography Engineering Environmental Monitoring Epidemiology Forestry Geology Hydrology

Insurance Meteorology Military Natural Resource Mgt Oil/ Gas Exploration Real Estate Telecommunications Transportation Utilities Urban Planning

Higher Education Annual Kit (HEAK)

ERDAS is committed to helping universities and other institutions of higher learning teach with the the world’s foremost GeographicImaging software.

Level 1 HEAK Example

• 15 Seats of IMAGINE Professional(any combination of platforms)

• 15 Seats of IMAGINE Vector Module

• 15 Seats of IMAGINE VirtualGIS

• 5 Seats of ERDAS MapSheets

• 12 months of Software Subscription Support

Government Agency Users National Park Service Bureau of Reclamation US Border Patrol EPA NOAA NASA FBI CIA Pacific Northwest Labs (Batelle) Jet Propulsion Lab (JPL) US State Dept. US Dept. of Energy Los Alamos National Lab Lawrence Berkeley National Lab US Army COE

US Forest Service US Bureau of Land Mgt. USGS US Fish and Wildlife US Dept. of Agriculture US Bureau of Indian Affairs NASA Dept. of Energy Sandia National Lab Livermore National Lab US Army US Air Force US Marine Corps US Navy Pacific Disaster Center

Commercial Users

Lockheed Martin Boeing Raytheon Grumman Hammon Jensen Wallen Map Factory Ducks Unlimited Space Imaging Aerojet Pacific Meridian Resources Weyerhaeuser Potlach Bechtel

Verizon Wireless Qualcomm Sierra Club Chevron Parson Brinkerhoff Charles Schwab Microsoft GTE The Nature Conservancy TRW McDonnel Douglas Simplot

Large Raster

Files

Reprojection

OrthoRectificati

on

Mosaicing

Cartographic

Topology

GIS Analysis

3D

Visualization

Data I/O

Feature

Extraction

Elevation

Extraction

Change Detection

Power Tools