Pedestrian re-identification method and device

The invention discloses a pedestrian re-identification method and device, which can be used in the technical field of artificial intelligence, and the method comprises the steps: obtaining a scene image, inputting the scene image into an instance human body analysis network, and obtaining an instance feature matrix of the scene image; calculating the similarity between the instance feature matrix of the scene image and the instance feature matrix of the target object; when the similarity is greater than a similarity threshold value, determining that the scene image is a scene image of a scene where a target object is located; wherein the instance human body analysis network obtains a human body analysis matrix and a pedestrian instance segmentation matrix corresponding to preset pixel point coordinates based on the scene image, and fuses the pedestrian instance segmentation matrix and the human body analysis matrix to obtain an instance feature matrix of the scene image. According to the method, scene images