Optical Calibration

Convert satellite imagery from digital numbers to physical values (radiance or reflectance). Required preprocessing for quantitative analysis, time series comparison, and multi-sensor fusion.

ID	imagery_optical_calibration
Domain	geo
Category	imagery
Type	raster-to-raster
Version	1.0.0

view yaml ◦view github ◦

Parameters

level: enum · default toa · Calibration level: - toa: Top of atmosphere reflectance (default, most common) - toc: Top of canopy (surface reflectance, requires atmosphere model) - radiance: At-sensor radiance
milli: boolean · default false · Output in milli-reflectance (0-1000 integer) instead of 0-1 float. Reduces file size while maintaining precision for most applications.
clamp: boolean · default true · Clamp output values to valid range (0-1 for reflectance)
atmosphere_model: enum · default us_standard · Atmospheric model for TOC correction (toc level only)
aerosol_model: enum · default continental · Aerosol model for TOC correction (toc level only)
visibility: number · default 23 · Visibility in km for TOC correction (toc level only)