Geometric constraint-based vehicle fine-grained identification method

Abstract

The invention discloses a geometric constraint-based vehicle fine-grained identification method. In a continuous video frame, a deep learning method is utilized to identify a vehicle target. The method comprises the following steps: acquiring a two-dimensional envelope frame of the vehicle target in an image coordinate system and coordinate information of the two-dimensional envelope frame, constructing geometric constraints for the specific vehicle target according to the coordinate information of the two-dimensional envelope frame model in combination with the camera calibration result so asto solve three-dimensional information of the vehicle target, and completing fine-grained identification of the vehicle target on the basis of the three-dimensional information. The method can adaptto different road traffic scenes and uses the camera to extract a large number of vehicle targets in the scene to complete the fine-grained identification process. The method is easy to implement andgood in universality and can be applied to fine-grained identification in various road scenes and is relatively accurate in result.

Description

technical field [0001] The invention belongs to the technical field of intelligent transportation, and in particular relates to a vehicle fine-grained recognition method based on geometric constraints. Background technique [0002] Vehicle identification is a very important sub-topic in the intelligent transportation system. It can be applied to the vehicle toll management system and the vehicle inspection system of the public security department. It is one of the key traffic parameters. Due to the continuous increase in the number of vehicles and the large number of similar vehicles on the road, the information that traditional vehicle identification can provide cannot meet the requirements of the management department. Therefore, fine-grained vehicle identification is required to identify more types of valuable vehicle information. [0003] The so-called vehicle fine-grained recognition means that on the basis of identifying the vehicle category (car, truck, etc.), it furt...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects and deficiencies in the prior art, the present invention provides a fine-grained vehicle recognition method based on geometric constraints, which overcomes the defects that the existing vehicle recognition methods require a large number of labeled samples and cannot further distinguish vehicle types.

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