RGB›Canopy Height Proxy
Canopy Height Proxy
Approximate canopy height from shadow length in nadir RGB images using the sun-elevation shadow-length method. Provide the sun elevation angle and ground sampling distance (GSD) for your acquisition.
1
Shadow Mask
dark, low-sat px
2
Shadow Blobs
connected regions
3
Shadow Length
bbox major axis
4
Height
h = L·GSD·tan(θ)
Images
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JPEG, PNG, WEBP — any browser-supported format
Acquisition Parameters
Sun Elevation (°)
Angle of sun above horizon at image capture time. Use SunCalc or metadata.
GSD (cm/px)
Ground sampling distance. Depends on altitude and camera focal length.
Upload images to begin
Upload nadir RGB images taken during daylight with clearly visible canopy shadows. Enter the sun elevation angle and GSD for your acquisition.