Vehicle model recognition method of the same brand based on spatial location information

A technology for spatial location information and vehicle recognition, applied in the field of image processing in intelligent transportation, can solve the problems of insufficient algorithm robustness, unsatisfactory recognition rate, difficulty in extracting feature areas, etc., to reduce vehicle misidentification and recognition. The results are accurate and the effect of high practical value

Inactive Publication Date: 2018-06-05
WUHAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

It has the following problems: it is very difficult to directly extract the feature area, it is difficult to control the extraction accuracy, it is easy to make mistakes, and the feature areas segmented by different models ma...

Method used

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  • Vehicle model recognition method of the same brand based on spatial location information
  • Vehicle model recognition method of the same brand based on spatial location information
  • Vehicle model recognition method of the same brand based on spatial location information

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Embodiment Construction

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] Such as figure 1 As shown, the vehicle type identification method of the same brand vehicle based on spatial position information of the present invention comprises the following steps:

[0018] Step S100, collect the image of the front of the vehicle, a picture of the vehicle can be directly collected through the camera, such as the vehicle information picture collected at the entrance and exit of the toll station, or a frame of the required vehicle information picture can be collected from the license plate video captured by the camera .

[0019] Step S200, performing histogram equalization on the collected vehicle images, specifically performing histogram equalization through the following formula:

[0020]

[0021] In the above formula, s k Represents the pixel of the image after histogram equalization, int represents...

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Abstract

The invention relates to a method for identifying vehicle types of vehicles of the same brand based on spatial position information. The method includes: collecting images of the vehicles; performing histogram equalization on the images of the vehicles; setting the size of the license plate, and adjusting the histogram The image after image equalization is stretched and rotated; the feature area of ​​N vehicle models to be tested is extracted according to the position of the corrected image relative to the license plate; the feature vector of each feature area is calculated; the minimum distance classifier is used to classify each feature vector Classify and compare with the reference feature vector of the brand vehicle in the database to identify the specific model. The method of the invention extracts the feature area of ​​the license plate and then identifies the relevant parameters of the feature area, thereby improving the recognition accuracy of the vehicle type.

Description

technical field [0001] The invention belongs to the field of image processing in intelligent transportation, and in particular relates to a method for identifying vehicle types of vehicles of the same brand based on spatial position information. Background technique [0002] At this stage, intelligent transportation has higher and higher requirements for vehicle information, and identifying vehicle information has high practical value. At present, there are mainly pattern recognition methods based on physical parameters and pattern recognition methods based on image processing. The pattern recognition method based on physical parameters obtains some physical parameters of the vehicle through sensors such as coils, but can only recognize the size of large cars, medium-sized cars, small cars, etc., but cannot identify the specific type of vehicle information, such as Cars of different brands, and different models under the same brand car, etc. The image-based vehicle identif...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/46
Inventor 黄樟灿刘海明苏清华
Owner WUHAN UNIV OF TECH
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