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A to Z GIS | Explore this related guide, featuring updated terms and graphics and developed in coordination with Esri’s GIS Dictionary team.

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image scale

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  1. [measurement, image processing] The ratio between a distance in an image and the actual distance on the ground, calculated as focal length divided by the height above mean ground elevation. Image scale can vary in a single image from point to point due to surface relief and the tilt of the camera lens.

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