@article {sinha2003computer, title = {Computer vision techniques for automatic structural assessment of underground pipes}, journal = {Computer-Aided Civil and Infrastructure Engineering}, volume = {18}, number = {2}, year = {2003}, pages = {95{\textendash}112}, publisher = {Blackwell Publishing Inc Boston, USA and Oxford, UK}, author = {Sinha, Sunil K and Fieguth, Paul W and Polak, Maria A} }