Vehicle re-identification method based on license plate information combination

The invention provides a vehicle re-identification method based on license plate information combination. The method comprises the following steps: acquiring a target image; obtaining a to-be-recognized vehicle image in the target image, and performing global feature extraction to obtain appearance feature information; performing license plate area extraction on the to-be-recognized vehicle in the target image, and performing alignment conversion on the license plate area to obtain a license plate image; performing feature extraction according to the license plate image to obtain license plate feature information; performing weighted fusion on the appearance feature information and the license plate feature information, and determining a target vehicle according to a weighted fusion result; according to the method, license plate information is introduced into a vehicle re-identification network, so that the discernability of a vehicle is improved; besides, vehicle appearance features and license plate feature