Droprise Ground Control Point 50x50cm
In an aerial mapping survey, GCPs are points which the surveyor can precisely pinpoint: with a handful of known coordinates, it’s possible to accurately map large areas.
Ground control points can be anything that can be easily recognized in the images. Typically they look like a small section of a checkerboard. The shape leaves very little ambiguity about where the ‘point’ of a ground control point is.
They’re almost always black and white because it’s easier to recognize high contrast patterns.
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