@inproceedings{mann2001quantigraphic,
  title={Quantigraphic imaging: Estimating the camera response and exposures from differently exposed images},
  author={Mann, Steve and Mann, Richard},
  booktitle={Computer Vision and Pattern Recognition, 2001. CVPR 2001. Proceedings of the 2001 IEEE Computer Society Conference on},
  volume={1},
  pages={I--842},
  year={2001},
  organization={IEEE}
}