insidecity_a0010.jpgspatial_envelope_256x256_static_8outdoorcategoriesAude Oliva and Antonio Torralba, IJCV 2001, vol 42(3).LabelMe Webtoolbuilding0016-Nov-2006 15:27:590anonymous222561256232242234231233226231562305023239231292322231stairs0016-Nov-2006 15:27:591anonymous25625425623124023523123322623255230502333923322322255door0016-Nov-2006 15:27:592anonymous9810618410618522996229