Image shooting moment determining method and system as well as vehicle speed detection method and system

An image capturing and determining method technology, applied in traffic control systems, traffic control systems for road vehicles, instruments, etc., can solve the problem that surveillance cameras cannot accurately know the image capturing time, and achieve the effect of improving accuracy

Active Publication Date: 2015-04-29
BEIJING LUSTER LIGHTTECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a method for determining the time of image shooting to solve the problem that the monitoring camera cannot accurately obtain the time of image shooting, thereby improving the accuracy of vehicle speed monitoring

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  • Image shooting moment determining method and system as well as vehicle speed detection method and system
  • Image shooting moment determining method and system as well as vehicle speed detection method and system
  • Image shooting moment determining method and system as well as vehicle speed detection method and system

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Embodiment Construction

[0041] The embodiment of the present invention provides a method for determining the time of image shooting, which can solve the problem that the monitoring camera cannot accurately obtain the time of image shooting, and further improve the accuracy of monitoring the driving speed of the vehicle.

[0042] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, and to make the above-mentioned purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention are described below in conjunction with the accompanying drawings The program is described in further detail.

[0043] Please refer to the attached figure 1 , figure 1 The flowchart of the method for determining the image shooting moment provided by the embodiment of the present invention is shown. figure 1 The flow shown includes the ...

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Abstract

The invention provides an image shooting moment determining method and system. The method comprises the following steps: low-precision moment information and a pulse per second signal are acquired from a Beidou time service module, wherein the low-precision moment information takes integral second as the minimum precision; the shooting frame rate of a monitoring camera is acquired so as to obtain an exposure trigger sequence corresponding to the shooting frame rate; the pulse per second signal is taken as a first exposure trigger signal of the exposure trigger sequence according to the shooting frame rate, and the monitoring camera is controlled for the first exposure; follow-up exposure is implemented sequentially by an exposure controller of the monitoring camera according to the exposure trigger sequence; and the shooting moment of each image corresponding to the exposure trigger sequence is calculated according to the low-precision moment information and the shooting frame rate. The invention further provides a vehicle speed detection method and system. With adoption of the scheme, the problem that the monitoring camera cannot acquire the image shooting moment accurately can be solved, and the vehicle traveling speed monitoring precision can be improved.

Description

technical field [0001] The present invention relates to the technical field of image acquisition, and more specifically, to a method and system for determining an image shooting time, and a vehicle speed detection method and system. Background technique [0002] As traffic becomes more and more developed, there are more and more vehicles on the road. In order to regulate safe driving and understand real-time road conditions, it is particularly necessary to monitor vehicles on the road. [0003] At present, image monitoring is one of the more common monitoring measures. In the actual image monitoring process, monitoring cameras are usually arranged at different positions on the road, and images of vehicle driving conditions are obtained through the shooting of monitoring cameras, and then calculated according to the time interval between two images and the distance of the vehicle in the image. out of the vehicle speed. For the same monitoring camera, the shooting time of e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/054
Inventor 黄操杨艺郭跃云冯猛黄守伟
Owner BEIJING LUSTER LIGHTTECH
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