TechTime New Mapping Tools for Transportation Engineering

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1 GeoEye-1 Stereo Satellite Imagery Presented by Karl Kliparchuk, M.Sc., GISP All satellite imagery are copyright GeoEye Corp GeoEye-1

2 About GeoEye Corp Headquarters: Dulles, Virginia Employees: 375+ Imagery from diverse platforms IKONOS (launched 1999) OrbView-2 / 3 GeoEye-1 (launched Sept 2008) Obama Inauguration

3 Why / When to Use GeoEye-1 Imagery? Quick image acquisition Remote areas Can acquire when aircraft are not available Safety for surveyors or other staff Stereo imaging ability to produce topographic maps Large area coverage in one image

4 GeoEye-1 Satellite Agility Customized collection ability Multiple point target collection, long strips or large area collections of ANY orientation Same Pass Stereo collections to ensure consistent lighting and environmental conditions Stereo is used to create DEMs and for 3D feature extraction (adds height to vertical features) 350,000 square kilometers daily worldwide in pan plus colour mode

5 Image Products - GeoEye-1 Positional Accuracy 0.5m panchromatic and 1.65m colour. CE 90% exclusive of terrain displacement 100 sq km min order size for new acquisitions 49 sq km min order size for archive.50-meter CE90 RMSE NMAS Geo [1] 5 meters 3 meters N/A GeoProfessional 10 meters 5 meters 1:12,000 Precision [2] [3] 4 meters 2 meters 1:5,000 CE 90 LE 90 NMAS GeoStereo 4 meters 6 meters 1:5,000 Precision [4] 2 meters 3 meters 1:2,500

6 GeoEye-1 Pricing (sq km) Product.50 Meter Pixel Geo TM $25.00 GeoProfessional TM $30.00 Precision Upgrade $40.00 GeoStereo TM $40.00 Precision Upgrade $50.00 Archive (Geo Only >90 days) $12.50 Prices in US$. Shipping and taxes are extra. Image processing / photogrammetry extra.

7 Sample Images Left: Hoover Dam, note power lines visible Upper Right: Different road surfaces Lower Right: People and golf carts visible

8 Example Project Using Stereo Satellite Imagery in BC IKONOS

9 Example Project on Vancouver Island Acquire stereoscopic IKONOS (81cm) satellite imagery, and load into a softcopy photogrammetric workstation, Project for BC Ministry of Forests and Range The imagery is analyzed and interpreted in 3D (stereo). Methods derived from this approach can be used by the for ongoing inventories of landslides (and possibly other resource features such as MPB attack sites). Tested topographic map production

10 Example Project on Vancouver Island Helicopter reconnaissance Two trips for ground truthing (Sept 2006 and March 2007) Checked 15 different locations throughout the study area.

11 Preparation of image pairs for stereo viewing Aerotriangulation of IKONOS for additional positional accuracy.

12 Analysis of images for forest cover

13 Digitized Spot Heights and Breaklines Tested for map production in a heavily forested area Accurate to 1:20,000 TRIM mapping 20m contours

14 Digitize landslide features 15m spacing plus breaklines.

15 Calculate landslide feature volume The value calculated is 368, cubic metres. If the pre-slide area had a drainage channel then the actual volume would be less than our calculated volume.

16 McElhanney is a distributor for: IKONOS (81cm pixel, stereo available) GeoEye-1 (50cm pixel, stereo available) SPOT (2.5-10m pixel, stereo available) TerraSAR-X ( m pixel, RADAR, InSAR available) And can additionally order and offer to clients: Quickbird Worldview ASTER Landsat RapidEye MODIS Radarsat

17 Thank You! Any Questions?