Determining resolution from altitude

Site Scan customers often need to deliver an orthomosaic of a specific quality. One of the largest drivers of output quality is the height at which the images are collected. Based on the geometry of the camera sensor and the lens used, the following table allows the calculation of the Ground Sampling Distance (GSD) of the raw imagery. Examples are shown below.

Site Scan Sony R10C 20mm

Altitude GSD
200 feet 1/2 in/pixel
400 feet  1 inch/pixel

 
 


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