@article{natural_shadow_matting_ToG07,
 author = {Tai-Pang Wu and Chi-Keung Tang and Michael S. Brown and Heung-Yeung Shum},
 title = {Natural shadow matting},
 journal = {ACM Trans. Graph.},
 volume = {26},
 number = {2},
 year = {e 07},
 issn = {0730-0301},
 pages = {8},
 doi = {http://doi.acm.org/10.1145/1243980.1243982},
 publisher = {ACM},
 address = {New York, NY, USA},
 }