Orthorectified Satellite Imagery

Resources

DigitalGlobe's Orthorectified Imagery products are designed for users who require an imagery product that is GIS ready and for users that require a high degree of absolute geometric accuracy for analytical applications.

Features	Benefits
Very high degree of cartographic accuracy 1:50,000 Worldwide, 15.4 m RMSE^A 1:12,000 in U.S. and Canada, 6.2 m RMSE 1:5,000 Worldwide – 2.6 m RMSE. 1:4,800 in U.S. and Canada – 2.5 m RMSE	Extract thematic information that is geopositionally accurate to the same level as the basemap
High-resolution 50 cm (1.6 ft) panchromatic – WorldView-1 60 cm (2 ft) or 70 cm (2.3 ft) panchromatic, natural color, color infrared, or 4-band pan sharpened – QuickBird 2.4 m (8 ft) or 2.8 m (9.2 ft) multispectral – QuickBird	Identify features, classify image data, and detect changes from recent global imagery at the highest resolution available from a commercial imaging satellite
Large image swath collection size 17.6 km (10.9 mi) width at nadir – WorldView-1 16.5 km (10.3 mi) width at nadir – QuickBird	Map large areas faster with fewer files to manage, process and mosaic
Superior image classification and analysis 11 bit digitization (up to 2,048 levels of gray scale) Discrete non-overlapping spectral bands	Improve feature classification and identification in dark or bright areas such as building shadows or snow and perform more flexible image enhancement
Open systems Partnered with commercial software providers Popular image file formats	Get your project up and running quickly and easily based on standard map projections and formats

A - QuickBird only

Spatial and Spectral Resolution

		Panchromatic	Multispectral
Product Type	Pixel Resolution	Black and White QB: 450 to 900 nm WV1: 400 to 900 nm	Blue 450 to 520 nm	Green 520 to 600 nm	Red 630 to 690 nm	Near IR 760 to 900 nm
Panchromatic	50 cm (1.6 ft) or 60 cm (2 ft) or 70 cm (2.3 ft)	X
Multispectral^B	2.4 m (8 ft) or 2.8 m (9.2 ft)		X	X	X	X
Natural Color	60 cm (2 ft) or 70 cm (2.3 ft)	X	X	X	X
Color Infrared	60 cm (2 ft) or 70 cm (2.3 ft)	X		X	X	X
Pansharpened (4 band)	60 cm (2 ft) or 70 cm (2.3 ft)	X	X	X	X	X

B - All four bands delivered in a single file

Image Accuracy
Orthorectified Product Levels	CE 90%	RMSE	Geographic Availability
1:50,000^C,D	25.4 m (83.3 ft)	15.4 m (50.5 ft)	Worldwide
1:12,000^D	10.2 m (33.5 ft)	6.2 m (20.3 ft)	USA and Canada
1:5,000^D	4.23 m (13.9 ft)	2.6 m (8.4 ft)	Worldwide
1:4,800^D	4.06 m (13.3 ft)	2.5 m (8.1 ft)	USA and Canada
Custom^E	Variable	Variable	Worldwide

C - QuickBird only
D - Delivery times and product availability dependent on the availability of adequate GCPs and DEMs
E - Customer supplies GCPs and DEMs

Processing
Applied Corrections	Radiometric, sensor and geometric corrections Mapped to a cartographic projection

Order Parameters
Product Type	Panchromatic, Multispectral or Bundle; Natural Color; Color Infrared; 4-band Pan Sharpened
Image Bits/Pixel	8 or 16 bits
File Formats	GeoTIFF 1.0, NITF 2.1 or NITF 2.0

Deliverables

Orthorectified Imagery can be acquired directly from the DigitalGlobe Archive or you can submit a new collection request. Orthorectified Imagery is ordered by area, with a minimum purchase of 100 km² (~39 mi²) for all ortho scales, maximum of 10,000 km² (3,860 mi²) per order.

Products are delivered on your choice of standard digital media with Image Support Data files including image metadata.

* Distribution and use of imagery at better than .50 m GSD pan and 2.0 m GSD multispectral is subject to prior approval by the U.S. Government.

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