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GIS Dictionary

The GIS Dictionary provides definitions for GIS terms related to operations such as analysis, GIS modeling and web-based GIS, cartography, and Esri software.

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tie point

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  1. [surveying,measurement] A point whose location is determined by a tie survey.

  2. [photogrammetry] A point in a digital image or aerial photograph that represents the same location in an adjacent image or aerial photograph. Usually expressed as a pair, tie points can be used to link images and create mosaics.

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