overlap—¹ v. To occupy the same area in part. ² n. The extent by which one photograph includes the same area covered by another; customarily expressed as a percentage. ³ That area of a map or chart which overlaps the same geographical area on an adjoining map or chart. ⁴ A condition arising when a survey carried out according to the descriptions of two separate pieces of property indicates that the properties overlap, while the descriptors had intended that the properties be contiguous.

overlapping pair— [PHOTOGRAMMETRY] Two photographs taken at different exposure stations in such a manner that a part of one photograph shows the same terrain as appears on a part of the other photographs. This term covers the general case and does not imply that the photographs were taken for stereoscopic examination. See also stereoscopy.

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Source: NSPS “Definitions of Surveying and Related Terms“, used with permission.

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