@article {sinha2006morphological,
	title = {Morphological segmentation and classification of underground pipe images},
	journal = {Machine Vision and Applications},
	volume = {17},
	number = {1},
	year = {2006},
	pages = {21},
	publisher = {Springer-Verlag},
	author = {Sinha, Sunil K and Fieguth, Paul W}
}
