insidecity_art654.jpgspatial_envelope_256x256_static_8outdoorcategoriesAude Oliva and Antonio Torralba, IJCV 2001, vol 42(3).LabelMe Webtooldouble door0029-Oct-2006 16:40:360anonymous59416021521221121141road0029-Oct-2006 16:40:361anonymous02202562102562562256building0029-Oct-2006 16:40:362anonymous0102202562102560