Resolution

    This refers to the level of detail of the image, in two senses:

    Radiometric: number of energy levels that can be distinguished. Can be practically infinite in photographs, but limited in digital images

    Spatial: smallest object that can be distinguished in the image.

This is the same geographic extent -
the University of Florida campus and central Gainesville shown with different resolutions, from lowest to highest resolution:
1. Multispectral Scanner Image (MSS) - 60 meter resolution
2. Thematic Mapper Image (TM) - 30 meter resolution
3. SPOT Image - 10 meter resolution
4. Indian Remote Sensing Satellite Image (IRS) - 5 meter resolution
5. Scanned Aerial Photo - 2 meter resolution
back.jpg (5747 bytes)

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