Pedestrian re-identification method, system, medium and device based on top angle shooting

The invention provides a pedestrian re-identification method, system, medium and device based on top angle shooting, and the method comprises the steps: obtaining a pedestrian track of a pedestrian under a vertical top view camera, and uniformly collecting pedestrian images based on the pedestrian track; obtaining a pedestrian direction under each pedestrian track based on the pedestrian image; obtaining pedestrian features under each pedestrian track based on the pedestrian image; and obtaining a pedestrian re-identification result based on the pedestrian features and pedestrian directions under each pedestrian trajectory. According to the method, the characteristic that the vertical top-view camera can capture multi-angle pedestrian pictures in a single track is utilized, so that top-view pedestrian re-identification in a specific scene has higher flexibility, more human body feature information can be captured, and higher robustness is achieved for environmental problems such as shielding; the problems tha