Shadow-invariant classification for scenes illuminated by daylight.

@article{Marchant2000ShadowinvariantCF,
  title={Shadow-invariant classification for scenes illuminated by daylight.},
  author={J. Marchant and Christine M. Onyango},
  journal={Journal of the Optical Society of America. A, Optics, image science, and vision},
  year={2000},
  volume={17 11},
  pages={1952-61}
}
A physics-based method for shadow compensation in scenes illuminated by daylight is proposed. If the daylight is represented by a simplified form of the blackbody law and the camera filters are of infinitely narrow bandwidth, the relationship between red/blue (rm) and green/blue (gm) ratios as the blackbody's temperature changes is a simple power law where the exponent is independent of the surface reflectivity. When the CIE daylight model is used instead of the blackbody and finite bandwidths… CONTINUE READING
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