@inproceedings {477,
	title = {Automated underground sewer pipe defect detection \& classification},
	booktitle = {1998 CATT Bi-Annual Conference and Field Exposition},
	year = {1998},
	address = {Waterloo},
	author = {S K. Sinha and P Fieguth and M A. Polak and R A. McKim}
}
