Foggy day vehicle detection model constraint method and device and foggy day vehicle detection method and device

The invention discloses a foggy day vehicle detection model constraint method and device and a foggy day vehicle detection method and device, and relates to the field of image data processing. The objective of the invention is to solve the technical problems in the prior art that there is no specific processing for the statistics of traffic flow in a foggy environment at present, an existing target detection algorithm cannot meet the requirements of real-time detection and statistics of vehicles in the foggy environment, and there is no traffic flow detection system with a high integration level. According to the technical scheme provided by the invention, the method for restraining the vehicle detection model in the foggy weather comprises the following steps of: acquiring a source domain; a step of collecting a target domain; a step of generating a class source domain; a step of generating a class target domain; inputting the class source domain into the teacher model; inputting the target domain and the cl