Computes the Cloud Displacement Index (CDI) from a Sentinel-2 Level 1C image. CDI is a measure of the optical separation in elevated objects due to sensor parallax. Returns a floating point band named "cdi".
See Frantz, D., Hass, E., Uhl, A., Stoffels, J., & Hill, J. (2018). Improvement of the Fmask algorithm for Sentinel-2 images: Separating clouds from bright surfaces based on parallax effects. Remote sensing of environment, 215, 471-481.
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