The Geospatial user community was presented with another high-res imaging option this week thanks to the crew at DigitalGlobe. Offered as 60-centimeter (two-foot) resolution, color orthomosaics with 1:4,800 scale map accuracy, CitySphere products featuring these 200 urban centers will be updated on an annual basis. The updated imagery is guaranteed to be newer than 24 months. DigitalGlobe will release new worldwide cities monthly over the next 12 months.
Some of the benefits to users include:
60 cm (2 foot) resolution Clearly discern features Increases your confidence for feature identification
1:4800 orthomosaic Highly accurate Pinpoint features to within 2.5 meters
Current off-the-shelf imagery Quick delivery of new imagery for your GIS Easy procurement process
GIS ready Use your imagery immediately No extra effort or training required
Affordable Pricing Fits within your budget Potential to avoid RFP process
Repeatable, Consistent Coverage Known update schedule and known update area Allows for easy budget planning
Product features & Options:
Basemap GIS Natural Color (pan-sharpened), RGB, 8 bit
Basemap Advanced 4 band pan-sharpened, NRGB, 16 bit
Accuracy 1:4800 (1”=400’)
2.5 m (8.10 ft) RMSE
Spectral Range Natural Color or 4 band Pan-sharpened
Pixel resolution 60cm
Bit depth 8 bit or 16 bit
File Format GeoTIFF 1.0
Projection, Datum, Units UTM, WGS 84, meters
Geographic Availability Worldwide for pre-selected cities
Cloud cover Less than 10%
Off Nadir (Angle from vertical) Typically less than 15 degrees
Dynamic Range Adjustment
(DRA) For 8 bit product (Basemap GIS)
Imagery no older than 2002 for first production year
Updated every year with imagery no older than 24 months
Delivery Within 2 days of order confirmation
DVD or FTP delivery
Tiling and Tile Overlap -14k x 14k pixel tiling, with no overlap between tiles
DigitalGlobe will release new worldwide cities monthly over the next 12 months.
Sample CitySphere Image of Baghdad, Iraq (Image Source: DigitalGlobe)