3D target detection method and system

The invention discloses a 3D target detection method and system, and relates to the technical field of target detection. Comprising the following steps: pre-training a laser radar teacher model to obtain a radar aerial view feature map; taking the monocular image data as input of a monocular student model, and extracting initial image aerial view features of a monocular image; performing feature enhancement processing on the initial image aerial view feature to obtain a monocular image aerial view feature map; establishing a high-order structure relationship by using a pre-trained laser radar teacher model, so that a pre-trained weight in the laser radar teacher model is utilized by a monocular student model; a soft label generated by the laser radar teacher model is utilized to guide the response of the monocular student model, and a target detection result is obtained; the method is used for 3D target detection under cross-modal data. The point cloud data and the monocular image data are fused and the struc