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A Vehicle Vehicle Recognition Method Based on Back Projection Three Views

A car model recognition and back-projection technology, which is applied in character and pattern recognition, image analysis, image data processing, etc., can solve the problem that the real data of the detected vehicle cannot be obtained, and achieve the effect of broad application prospects

Active Publication Date: 2019-05-14
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, such methods cannot obtain the real data of the detected vehicle in vehicle identification

Method used

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  • A Vehicle Vehicle Recognition Method Based on Back Projection Three Views
  • A Vehicle Vehicle Recognition Method Based on Back Projection Three Views
  • A Vehicle Vehicle Recognition Method Based on Back Projection Three Views

Examples

Experimental program
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Embodiment

[0106] refer to figure 1 , the picture is a real-time traffic video image of a road section in Xi'an, the sampling frequency of the video is 25 frames per second, the image size is 1280*720, the height of the camera is 8 meters, the vehicle detection area is the first lane on the left, the camera The calibration takes the orthocenter of the camera on the ground as the origin of coordinates, and the direction of the vehicle as the positive direction of the Y axis. figure 1 The rectangle box in (a) in (a) marks the detected vehicle, and the corresponding figure 1 (b) is the three-dimensional wireframe of the detected vehicle, where the left boundary of the three-dimensional wireframe is -7.9m, the right boundary is -4.9, the lower boundary is 12.3m, and the upper boundary is 19.31m. figure 2 It is the detection map of the chassis contour line; image 3 It is the back projection view of the front and side of the vehicle; Figure 4 Detect the front and side back projection veh...

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Abstract

The invention discloses a vehicle type recognition method based on the back projection three-view. The vehicle type recognition and vehicle modeling method based on the back-projection three-view is not limited by the hardware environment, and can extract the three-dimensional structure information and real size data of the detected vehicle , can accurately determine the vehicle type of the detected vehicle, and can also establish a three-dimensional wireframe model of the vehicle based on the vehicle structure extracted by back-projection three-view matching. In addition, this method is not affected by the shadow of the vehicle, and can accurately and stably identify the vehicle type through the three-dimensional structure of the detected vehicle, which has broad application prospects.

Description

technical field [0001] The invention belongs to the field of video detection, in particular to a vehicle identification method based on back projection three-view. Background technique [0002] The automatic vehicle identification technology is one of the key technologies of the ITS (Intelligence Transportation System) system. It mainly collects the original image of the vehicle through the vehicle identification system, and uses the corresponding image processing algorithm to analyze, process and obtain the relevant information of the vehicle. Finally, the corresponding intelligent data management is carried out. No matter in the field of real-time monitoring of traffic road conditions, or in the field of automatic toll collection of vehicles at airports, stations, and toll stations, vehicle type recognition technology has a wide range of applications. [0003] Traditional vehicle identification methods mainly include ground sensing coil detection method, infrared detectio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06K9/32G06K9/62G06T7/13
CPCG06V20/584G06V20/62G06V10/751G06V2201/08
Inventor 张朝阳闻江李钢李婵李莹
Owner CHANGAN UNIV
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