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Method for computer to identify vehicle type by video image

A video image and vehicle type technology, applied in the field of image recognition, can solve the problems of poor fault tolerance, long calculation time, consumption, etc., achieve fast calculation speed and fault tolerance, expand the scope of application, and mature technology.

Inactive Publication Date: 2013-04-03
SUZHOU LIANGJIANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for a computer to identify vehicle types through video images, which solves the problems in the prior art that a computer recognizes vehicle types through video images, which consumes a lot of computing time and has poor fault tolerance.

Method used

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  • Method for computer to identify vehicle type by video image
  • Method for computer to identify vehicle type by video image
  • Method for computer to identify vehicle type by video image

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Embodiment

[0045] In this embodiment, the method for the computer to recognize the vehicle type through the video image is carried out according to the following steps:

[0046] (1) The computer acquires the video image, extracts the target key frame from the video image, extracts the target area to be recognized by background clipping, and preprocesses the video image;

[0047] (2) Perform feature extraction on the preprocessed image, select the Hu geometric invariant moment in the image shape feature as the vehicle feature parameter, and calculate the shape feature of the target area;

[0048] (3) Carry out sample training of all vehicle types through machine learning methods, and when the sample training is completed, classify and predict the target area to be identified to identify the vehicle type.

[0049] The whole technical solution mainly has three parts: video image preprocessing, feature extraction and classifier training.

[0050] 1. Video image preprocessing: extract the ta...

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Abstract

The invention discloses a method for a computer to identify a vehicle type by a video image. The method is characterized by comprising the following steps of: (1), acquiring a video image by a computer and extracting a target key frame from the video image, exacting a target region to be identified through wiping out background, and pre-processing the video image; (2), carrying out feature extraction on the pre-processed image, selecting an Hu geometric moment invariant in the image shape characteristic as a vehicle characteristic parameter, and calculating the shape characteristic of the target region; and (3), carrying out sample training of all vehicle types through a machine learning method, and carrying out classified predication on the target region to be identified after the sample training is finished so as to identify the vehicle type. The method can semi-automatically classify the vehicle types, so that the classifying accuracy is improved as much as possible.

Description

technical field [0001] The invention belongs to the technical field of image recognition, and in particular relates to a method for a computer to recognize vehicle types through video images. Background technique [0002] In recent years, the rapid development of Intelligent Transportation System (ITS), with the development of computer vision and pattern recognition technology, provides an opportunity for more effective application of ITS. Computer vision is the use of computers to simulate human visual functions, extract information from images of objective things, process and understand them, and finally use them in actual detection, measurement and control. [0003] The vehicle classification process based on image recognition mainly includes two stages: extracting the target vehicle from the image and extracting the characteristic parameters; inputting the characteristic parameters in the classifier and obtaining the classification result. [0004] In the first stage, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/46G06K9/62
Inventor 陈国庆冯玉玺
Owner SUZHOU LIANGJIANG TECH
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