@conference {294,
	title = {A Novel Feature Descriptor Invariant to Complex Brightness Changes},
	booktitle = {CVPR{\textquoteright}09},
	year = {2009},
	url = {http://users.soe.ucsc.edu/~manduchi/cvpr09_tang.pdf},
	author = {Tang, Feng and Suk-Hwan Lim and Nelson L. Chang and Hai Tao}
}
