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Snapshot method for multilane free stream vehicle image

A multi-lane, vehicle technology, applied in the field of intelligent transportation systems, can solve problems such as waste of resources, and achieve the effect of saving construction costs and the number of capture cameras

Active Publication Date: 2015-04-22
北京速通科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Theoretically, setting many cameras on the section so that each capture position has at least two capture cameras can meet the capture requirements, but it is a waste of resources.

Method used

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  • Snapshot method for multilane free stream vehicle image
  • Snapshot method for multilane free stream vehicle image
  • Snapshot method for multilane free stream vehicle image

Examples

Experimental program
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Embodiment Construction

[0047] The layout of the cross-section cameras designed by the present invention and the division of the sub-fields can have multiple methods, wherein the number of divisions of the sub-fields of each camera mainly depends on the number of pixels of the high-definition camera, and can be divided into three sub-fields for a 2 million pixel camera. Field of view, for cameras with higher pixels, it can be divided into more sub-fields of view. Here are three typical examples, taking a 2-megapixel camera as an example:

[0048] 1. Using 7 cameras, each camera has a panoramic field of view of 5 meters, divided into three sub-fields, each sub-field is 2 meters wide, and the interval between adjacent sub-fields is 0.62 meters, that is, only cameras 3.24 meters are actually used The width of the field of view of meters, the distance between adjacent cameras is 1.86 meters (such as Figure 5 , Figure 6 shown);

[0049] 2. Eight cameras are used for the cross-section. Each camera has ...

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Abstract

The invention discloses a snapshot method for a multilane free stream vehicle image. Hardware of the method comprises a set of laser detectors, a set of high definition cameras and a snapshot controller. Each camera is divided into three snapshot subsidiary view fields and the snapshot controller is used for coordinating and controlling snapshot of different cameras. The laser detectors detect entry of a vehicle, a calculation is conducted and a snapshot subsidiary view field which a vehicle center corresponds to is provided, namely, the central point of the subsidiary view field which is closest to the detected vehicle center is selected as the subsidiary view field for snapshot. The snapshot method for the multilane free stream vehicle image can solve the technical problems of simultaneous running of a plurality of vehicles, lane-changing driving, lane-crossing driving, high-speed driving, blocking of a front vehicle and a back vehicle under a jamming condition and the like under a multilane free stream state.

Description

technical field [0001] The present invention relates to the field of intelligent transport system (Intelligent Transport System, referred to as: ITS), in particular, to a method for capturing vehicle images in a multi-lane free-flow electronic toll collection system. Background technique [0002] At present, the most advanced road toll collection technology is multi-lane free-flow electronic non-stop toll collection technology, which means that no lane isolation facilities that affect vehicle traffic are installed in multi-lane toll stations, so that vehicles can travel at normal speeds ( 0~180km / h) through the toll stations at will, when the vehicle passes through the toll stations, the toll transaction is automatically completed, and the driver does not feel the occurrence of the toll collection process. This charging technology can be applied to projects such as urban congestion charging, current limiting charging and expressway charging, and is the development direction ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G07B15/06
Inventor 张北海高文宝王梅薛金银李全发张为民尤鑫岳雅峰鲁程
Owner 北京速通科技有限公司