A taxi identification method

A recognition method, taxi technology, applied in character and pattern recognition, instruments, computer components, etc., can solve the problems of limited engineering practical application, high calculation cost, and low recognition rate, achieving high accuracy and simple algorithm , high robustness effect

Active Publication Date: 2016-05-25
INST OF AUTOMATION CHINESE ACAD OF SCI +1
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, the system uses a large number of sample models, the calculation overhead is too large, and the recognition rate is not very high, which limits its practical engineering application

Method used

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Embodiment Construction

[0016] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0017] figure 1 It is a flow chart of the taxi identification method of the present invention, as figure 1 Shown, described taxi identification method comprises the following steps:

[0018] Step S1, performing image calibration on the road traffic scene in the video sequence, so as to perform mutual conversion between the image coordinate system and the physical coordinate system, so as to obtain the physical coordinates of each position of each frame of image in the video sequence;

[0019] In one embodiment of the present invention, first select a high-definition video clip taken by a surveillance camera with a resolution of 2592×1936, and the video scene is a traffic intersection covering three lanes. In order to obt...

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Abstract

The invention discloses a method for identifying taxis. The method for identifying the taxis comprises the following steps of carrying out image calibration on a road traffic scene in a video sequence so that mutual conversion between an image coordinate system and a physical coordinate system can be carried out, and obtaining physical coordinates of positions of each image in the video sequence; locating license plates and top lamps in the images; extracting color spraying areas of the taxis in the images containing the positions of the license plates and the positions of the top lamps; carrying out final locating on the taxis according to the relative position relation between the positions of the license plates and the positions of the color spraying areas, and the positions of the top lamps. The method for identifying the taxis has the advantages of being easy to implement, high in robustness, high in accuracy, high in practicability and the like, and a new real-time reliable way can be provided for monitoring and management of the taxis in the process of video monitoring.

Description

technical field [0001] The invention relates to the technical field of video monitoring, in particular to a method for identifying taxis in urban road monitoring videos. The method is a method for automatically identifying taxis in monitoring videos by using image processing and feature extraction technologies. Background technique [0002] In large and medium-sized cities, the development of urbanization has led to more and more traffic jams, traffic violations and traffic accidents. In order to control and manage traffic more effectively, intelligent traffic has attracted extensive attention. The traffic information service is an important part of the function of the intelligent transportation system. The realization of this function must first monitor the traffic conditions and obtain various traffic parameters quickly and accurately. With the development of video surveillance technology, video cameras have been widely used to monitor various environments, areas and plac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00
Inventor 王飞跃田滨李泊李叶王坤峰熊刚朱凤华胡斌
Owner INST OF AUTOMATION CHINESE ACAD OF SCI
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