Method and device for estimating main direction of crowd flow

A technology of flow direction and main direction, which is applied in the field of image processing, can solve the problems such as the inability to determine the movement trajectory of pedestrians in the surveillance image, and the inability to obtain the main direction of crowd flow.

Inactive Publication Date: 2018-10-12
深圳市深网视界科技有限公司
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] In the process of determining the flow direction of the crowd, it is necessary to determine the movement trajectory of pedestrians in the monitoring image based on the continuous monitoring images acquired by the monitoring equipment for a period of time. The method of flow direction cannot determine the movement trajectory of pedestrians in the surveillance image, so that the main direction of crowd flow cannot be obtained

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  • Method and device for estimating main direction of crowd flow

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Embodiment 1

[0095] In order to facilitate the understanding of this embodiment, a method for estimating the main direction of crowd flow disclosed in the embodiment of the present invention is firstly introduced in detail.

[0096] A method for estimating the main direction of crowd flow disclosed in this embodiment, the execution subject is a computing device, and the computing device is used to track the image feature points in the current surveillance video image to construct moving points, and calculate the moving points between Calculate the similarity between them, and then determine the main direction of crowd flow through the calculated similarity between moving points.

[0097] The computing device can use any existing computer or server to estimate the main direction of crowd flow, and details will not be repeated here.

[0098] see figure 1 , this embodiment provides a method for estimating the main direction of crowd flow, including the following steps:

[0099] Step 100, ac...

Embodiment 2

[0162] see figure 2 , this embodiment provides a device for estimating the main direction of crowd flow, which is used to implement the above method for estimating the main direction of crowd flow, including:

[0163] An image acquisition module 200, configured to acquire a current monitoring video image;

[0164] Tracking module 202, is used for extracting the image feature point in current surveillance video image, and the image feature point that extracts is tracked;

[0165] The moving point construction module 204 is used to construct the moving point of the current monitoring video image according to the tracking result of the image feature point;

[0166] A similarity calculation module 206, configured to calculate the similarity between each moving point;

[0167] The main direction determination module 208 is configured to determine the main direction of crowd flow according to the calculated similarity between the movement points.

[0168] Specifically, the movem...

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Abstract

The invention provides a crowd flowing main direction estimating method and device. The method comprises the following steps: a current surveillance video image is obtained, and image feature points in the current surveillance video image are extracted and then tracked; according to an image feature point tracking result, motion points of the current surveillance video image can be constructed, similarity among all the motion points are calculated, and a crowd flowing main direction can be determined according to the calculated similarity among all the motion points. Via use of the crowd flowing main direction estimating method and device provided in the invention, calculation of crowd flowing main direction estimating can be expedited.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to a method and device for estimating the main direction of crowd flow. Background technique [0002] At present, in crowded areas such as squares and commercial areas, monitoring equipment is usually installed to monitor the crowds in the squares and commercial areas in real time, so as to ensure the safety of the crowd in the squares and commercial areas. When emergencies such as fires and explosions occur in crowded areas, it is necessary to determine the flow direction of the crowd in the crowded area where the emergency occurs, and then guide the crowd in the area according to the site conditions in the crowded area to ensure that personnel safety. [0003] In related technologies, in order to determine the flow direction of crowds in densely populated areas, the existing method for determining the flow direction of crowds can firstly use the continuous monito...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/246G06T5/00G06K9/00G06K9/62
CPCG06T5/002G06T2207/10016G06T2207/30196
Inventor 陈芳林万定锐
Owner 深圳市深网视界科技有限公司
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