Camera Ground Sampling Distance (GSD)
ReadyFormula: GSD(cm/px) = altitude(m) × sensor_width(mm) × 100 / [focal_length(mm) × image_width(px)]
- Flat terrain and a camera pointing straight down.
- No lens distortion, rolling shutter or altitude error correction.
Preliminary estimate only. Real ground resolution varies with terrain, lens distortion and flight conditions.