Marcus A. Maloof Pat Langley Thomas O. Binford Ramakant Nevatia Stephanie Sage Improved Rooftop Detection in Aerial Images with Machine Learning. 157-191 2003 53 Machine Learning 1-2 http://dx.doi.org/10.1023/A:1025623527461 db/journals/ml/ml53.html#MaloofLBNS03