How many photos will a mapping mission take?
Waypoints are not photos — a 100-waypoint grid can produce a few thousand frames. Working out the real count and card space, and the trigger-rate trap that quietly lowers your overlap.
The settings that decide whether a mapping flight comes back usable — resolution, overlap, and height above ground — explained the way they actually behave in the field.
Waypoints are not photos — a 100-waypoint grid can produce a few thousand frames. Working out the real count and card space, and the trigger-rate trap that quietly lowers your overlap.
Terrain follow keeps height above ground constant across a slope — but it flies a model of the ground, not the ground. Where that model is wrong, and how to check before you launch.
Overlap is what lets photogrammetry software stitch a survey together. Too little and the model tears; too much and you burn battery for nothing. How to pick the numbers.
GSD is centimetres per pixel — the hard ceiling on what your survey can ever resolve. Why altitude and focal length decide it, and why you set it before takeoff, not after.
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