The following are technical specifications for Google’s Aerial Orthoimagery product.
Google Maps for Work Partners only: For a complete list of product details, see the
technical whitepaper on the Google for Work Connect site.
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RESOLUTION
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6" (15 cm); Many other providers offer 12" (30 cm) |
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POSITIONAL ACCURACY (CE90)
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Less than 1 m (Accuracy will achieve 1-meter CE90 in most areas. Accuracy may not meet 1-meter CE-90 in areas of significant relief due to Digital Elevation Model related errors.)
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SPECTRAL BANDS
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RGB (Red, Blue, Green) |
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OTHER OFFERINGS
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Add-on option of NRG (Near-Infrared, Red, Green) |
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COVERAGE
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Majority of continental U.S.; Portions of Canada; Portions of Western Europe |
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REFRESH RATE
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Every year to every few years, depends on population size and other factors |
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PROCESSING
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Orthorectified and mosaicked |
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FORMAT
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JPEG2000 (4,096 by 4,096 pixels) and map tile pyramid files |
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COORDINATE SYSTEM
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Geographic, WGS84
GEOGCS["WGS 84",
DATUM["WGS_1984",
SPHEROID["WGS 84",6378137,298.2570248822722,
AUTHORITY["EPSG","7030"]],
AUTHORITY["EPSG","6326"]],
PRIMEM["Greenwich",0],
UNIT["degree",0.0174532925199433],
AUTHORITY["EPSG","4326"]]
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CLOUDS
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< 1 percent |
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BIT DEPTH
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8 bits per pixel (scaled from 12-bit source) |
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SNOW AND ICE
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Only permanent snow or snow above timberline |
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SUN ANGLE
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≥ 30 degrees |
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SMOKE / HAZE
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< 1 percent (detail is visible) |
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LEAF ON / OFF
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Mix of both (Flying throughout the year) |
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METADATA
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Available with purchased imagery files; includes date of flight:
- Tile-level metadata (mandatory time-stamping [flight capture date])
- Creation date and person
- Modification date and person
- Attribution
- Image size in pixels
- Raw size/uploaded size
- Resolution/max zoom level according to Google's zoom levels
- Bounds
- Processing type (masking)
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