Traffic flow statistics method based on image visual processing technology

Abstract

The invention relates to a traffic flow statistics method based on the image visual processing technology. Compared with the prior art, thedefect that comprehensive statistics of the traffic flow can not be achieved according to the video image technology is overcome. The traffic flow statistics method based on the image visual processing technology comprises the following steps of conducting pre-processing, wherein a virtual circle and a detection line are drawn for a detected lane, and manual statistics is conducted under the vehicle saturation condition; establishing an initial background image, wherein the background image BG is constructed according to the frame difference method; conducting vehicle monitoring and forming a vehicle binary image Object through a difference image DI; obtaining the image information of vehicles in the virtual circle; judging the state of the vehicle in the virtual circle, wherein whether vehicles exist in the virtual circle and the virtual circle is in a vehicle saturated state or not is judged by calculating the ratio of overlapped images to the detection line; conducting traffic flow statistics, wherein the traffic flow in the unsaturated state and the traffic flow in the saturated state are calculated, and thus a traffic flow statistics result is obtained. By the adoption of the traffic flow statistics method based on the image visual processing technology, the traffic flow in the unsaturated state can be obtained, the traffic flow in the saturated state can also be obtained, and the statistics result is more accurate.

Description

technical field [0001] The invention relates to the technical field of intelligent transportation, in particular to a traffic flow statistics method based on image visual processing technology. Background technique [0002] With the rapid development of my country's economic and social construction, the number of car ownership has gradually increased. The increase in car ownership has intensified road traffic congestion and frequent traffic accidents. The use of remote road video surveillance systems in traffic management greatly reduces manpower consumption. In order to effectively monitor the road traffic, according to the dynamic changes of traffic conditions, and quickly make traffic guidance control decisions, it is necessary to detect the road traffic flow in real time. [0003] At present, the methods of traffic flow extraction mainly include: 1. Use wireless microwave, thunder wave, etc. to obtain vehicle speed related information. It is more common to install rada...

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Problems solved by technology

[0009] The purpose of the present invention is to solve the defect that the video image technology cannot be used to comprehensively count the traffic flow in the prior art, and to provide a traffic flow statistics method based on image visual processing technology to solve the above problems

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