VOC2007 0000021_00800_d_0000003.jpg VisDrone2019-DET VisDrone2019-DET flickr Unspecified LJ LJ 960 540 3 0 pedestrian Unspecified 0 0 430 241 441 289 pedestrian Unspecified 0 0 440 248 452 293 tricycle Unspecified 0 0 691 209 726 231 people Unspecified 0 1 706 205 715 214 motor Unspecified 0 0 730 205 749 227 tricycle Unspecified 0 1 774 199 805 217 pedestrian Unspecified 0 0 950 205 958 233