@article{Orchard91,author={M. T. Orchard and C. A. Bouman}, title={Color quantization of images}, journal={IEEE Trans. on Signal Processing}, volume={39}, year={1991}, pages={2677-2690}, number={12}, comments = {color quantization incorporating hierarchical tree-structured color palettes and performance criteria based on subjective evaluations of image quality}, theme = {compression,quantification}}