Retrieval method and device for similar vehicles

Abstract

The invention provides a retrieval method and a retrieval device for a similar vehicle. The method comprises the following steps of establishing vehicle type template bases of different areas according to example images collected by a video monitoring device; determining the vehicle type information of a to-be-queried image according to the to-be-queried image including a vehicle and the area information of the to-be-queried image; establishing a query image set corresponding to the to-be-queried image according to the vehicle type information and the image information of a target database; obtaining the retrieval results of each example image in the query image set and all the images in the target database; determining the vehicle similar to the vehicle in the to-be-inquired image in the target database according to the retrieval results of all the example images in the query image set, wherein the vehicle type template base of each area includes multiple pieces of vehicle type information and vehicle type template bases corresponding to the multiple pieces of vehicle type information; the vehicle type template base corresponding to each piece of vehicle type information includes the set of multiple example images of a vehicle living example corresponding to the vehicle type information. By using the method, the robustness of the retrieval performance of the similar vehicle can be improved.

Description

technical field [0001] The invention relates to the technical field of intelligent transportation, in particular to a method and device for retrieving similar vehicles. Background technique [0002] With the rapid development of my country's economy, the continuous expansion of urban scale, and the substantial increase in the number of vehicles, my country's transportation system is gradually becoming intelligent. Traffic surveillance video is an important data basis for public security services, and plays a vital role in maintaining social security and stability and combating crimes. Among them, retrieving the target vehicle from a large number of surveillance videos is a basic requirement. [0003] In the existing technology, most of the similar vehicle retrieval methods are based on the license plate number for vehicle search. This method greatly depends on the accuracy of license plate recognition. Different lighting conditions, license plate wear or license plate inten...

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, most of the similar vehicle retrieval methods are based on the license plate number for vehicle search. This method greatly depends on the accuracy of license plate recognition. Different lighting conditions, license plate wear or license plate intentional occlusion and other reasons will cause retrieval problems. wrong result

Another method is to directly compare the query image with each image in the database, and its retrieval performance is also greatly affected by factors such as lighting conditions, shooting angle of view, vehicle occlusion degree, etc., and the accuracy and robustness are not high.

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