TerraColor® Frequently Asked Questions (FAQ)

1. How do I determine which image tiles I need?
2. Is TerraColor 'pan sharpened'?
3. Is TerraColor used in Microsoft's web mapping applications?
4. Is TerraColor used in DigitalGlobe's web mapping applications?
5. Is TerraColor used in Apple Maps mapping applications?
6. Is TerraColor used in Yahoo Maps mapping applications?
7. Is TerraColor used in Yandex's web mapping applications?
8. Is Harris Corp's Globe15 product based on TerraColor?

1. Click on this link to download the image coverage Shapefile showing the boundaries and filename of each TerraColor image tile to determine the number and filenames of tiles you need to cover a specific area of the earth. The shapefile is in the Geographic (Lat Long) projection and WGS84 datum.

2. Is TerraColor Pan-sharpened?
Yes it is. Pan sharpening is a process that fuses or merges the higher resolution (14.25-meter) panchromatic band of Landsat 7 with the lower resolution (28.5-meter) color/multispectral bands to create color imagery at 14.25-meter resolution. The same process is used where ALI data is used, but ALI's Pan band has been resampled from 10 to 15 meters.

3. Is TerraColor used in Microsoft's web mapping applications?
Yes, the TerraColor version with bathymetric shaded relief ocean fill is used as the global satellite image base layer in Microsoft's Bing Maps. The imagery is displayed whenever you see "Earthstar Geographics LLC" displayed in the lower-right corner of the mapping window. The version on Bing Maps may not contain the most current upgrades.

4. Is TerraColor used in DigitalGlobe's web mapping applications?
Yes, the TerraColor version with bathymetric shaded relief ocean fill is currently used as the base global satellite imagery layer in DigitalGlobe's Global Basemap web mapping service. The version on Global Basemap may not contain the most current upgrades.

5. Is TerraColor used in Apple Maps web mapping applications?
A version of TerraColor with bathymetric shaded relief ocean fill modified by Apple is currently used as the base global satellite imagery layer in Apple Maps. The changes include color modifications and artificial shading of the land areas. The version on Apple Maps may not contain the most current upgrades.

6. Is TerraColor used in Yahoo Maps web mapping applications?
In some more remote areas, TerraColor is used to fill areas where high resolution imagery is not available in Yahoo Maps. (TerraColor is not used as Yahoo's base medium resolution imagery layer, that is provided by another vendor.) The version on Yahoo Maps may not contain the most current upgrades.

7. Is TerraColor used in Yandex's web mapping applications?
Yes, an older version of TerraColor without ocean masking is currently used as the medium resolution satellite imagery layer in Yandex's web mapping service. The imagery is displayed whenever you see "Earthstar Geographics LLC" displayed in the lower-right corner of the mapping window. (Yandex is sometimes referred to as the "Russian Google". The English language version of the maps can be accessed at maps.yandex.com). This version does not contain the most current upgrades.

8. Is Harris Corp's Globe15 product based on TerraColor?
Yes, Harris Corporation licensed an earlier version of the TerraColor product from us, and did their own color modifications tailored to their visual simulation market. They sell this product commercially under the brand name Globe15.

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