Vehicle logo positioning method based on active vision

Abstract

The invention relates to a vehicle logo positioning method based on active vision. The method comprises the steps of: (1) using the active vision to search rearview mirrors of a vehicle and carrying out inclination correction; (2) searching the positions of a license plate and vehicle lamps of the vehicle; (3) coarsely positioning a vehicle logo; and (4) adopting different methods to realize fine positioning of the vehicle logo according to different positions of the vehicle logo and different radiator grid textures. According to the invention, the concept of active vision is introduced, an active selectivity attention mechanism in the active vision is utilized to actively search the rearview mirrors and gradually search the regions of the vehicle lamps and the license plate, the inclination correction is carried out by the rearview mirrors, and a horizontal range and a vertical range are determined by the two regions; in the positioning process, a gradual positioning method from coarse positioning to fine positioning is used, so that the accuracy is improved; in addition, three different kinds of radiator grid textures are distinguished in vehicle logo positioning, and the applicability of the algorithm is improved.

Description

technical field [0001] The invention relates to an image processing and pattern recognition technology, in particular to a vehicle logo positioning method based on active vision. Background technique [0002] With the continuous development of social economy and the sharp increase in the number of cars, how to solve the increasingly serious traffic problems has become a key issue in the research of intelligent transportation, and the automatic vehicle recognition system based on vision is an important part of the intelligent transportation system. The automatic identification system of the vehicle includes license plate recognition, vehicle type recognition and vehicle logo recognition. Vehicle logo recognition technology includes two key technologies, vehicle logo positioning and vehicle logo recognition, and car logo positioning is the most critical step. According to the vehicle label information, in vehicle criminal cases, the target range can be quickly narrowed ...

AI Technical Summary

Problems solved by technology

At this stage, road monitoring generally only recognizes license plate information, but there are currently phenomena such as false plates, which lead to wrong recognition results and bring unnecessary troubles and losses to normal users. If the vehicle logo information and license plate information are combined, it will be Greatly improve the reliability of vehicle identification

At present, the main method of car logo positioning is obtained by edge detection method, but it is easy to be limited by conditions such as the position of the car logo and the texture of the car logo.

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