Target tracking method and device and device for target tracking

The embodiment of the invention provides a target tracking method and device and a device for target tracking. The method comprises the steps: constructing a corresponding graph structure for each image frame in continuous image frames, wherein the nodes in the graph structures represent target entities in the corresponding image frames and target categories corresponding to the target entities, and the connection relation of the nodes in the graph structures represents the position relation between the target entities in the corresponding image frames; matching the graph structure of the previous frame with the graph structure of the next frame in the continuous image frames to obtain a node matching relationship between the graph structure of the previous frame and the graph structure of the next frame; and determining a tracking result of the target entity in the previous frame in the next frame according to the node matching relationship. According to the embodiment of the invention, the speed and accurac