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Object density acquisition method and device

An object and density technology, applied in the field of image analysis, can solve the problems of high implementation requirements and high implementation complexity, achieve low implementation requirements, reduce implementation complexity, and save manpower and time costs

Inactive Publication Date: 2018-07-17
TENCENT TECH (SHENZHEN) CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] Embodiments of the present invention provide a method and device for obtaining object density, which are used to solve the problems of high implementation complexity and high implementation requirements in the solutions provided by related technologies

Method used

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  • Object density acquisition method and device
  • Object density acquisition method and device

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] Please refer to figure 1 , which shows a schematic diagram of an application scenario provided by an embodiment of the present invention. The application scenario may include: at least one camera 110 and a server 120 .

[0029] The camera 110 is deployed above or obliquely above a certain area, and is used to collect monitoring images (such as monitoring video or monitoring pictures) in the area. The flow status of objects (such as crowds) in the area is recorded in the monitoring image. The aforementioned areas may be any areas that have statistical requirements for object density (such as crowd density). For example, taking the acquisition of crowd density as an example, the aforementioned areas may be aisles, stores, entra...

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Abstract

The invention discloses an object density acquisition method and device and belongs to the image analysis technology field. The method comprises steps that n monitoring images of a target area collected at n different times in the target time period are acquired, and the n is an integer greater than 1; objects contained by each monitoring image are identified; the distance difference information corresponding to each monitoring image is acquired, and the distance difference information is used for indicating the degree of difference in the distances among the objects contained in the monitoring images; according to the respective distance difference information of the n monitoring images, the object density of the target area in the target time period is determined. The method is advantaged in that constructing and training a model are not needed in the scheme realization process, and scheme realization complexity and enforcement requirements are reduced.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of image analysis, and in particular to a method and device for acquiring object density. Background technique [0002] With the rapid increase of urban population density, many public infrastructures often usher in short-term peak flow of people, and the high degree of crowding can easily lead to various emergencies. Therefore, it is very necessary to measure the crowd density in public infrastructure and other places, and then carry out subsequent management and coordination. [0003] Driven by the construction of a safe city, cameras have been installed in many places. By analyzing the surveillance video collected by the cameras, the crowd density of the corresponding places can be determined. In the related art, a method for obtaining crowd density based on video analysis is provided, which mainly includes the following two steps: (1) training the crowd density estimation model, (2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V20/53
Inventor 王达峰
Owner TENCENT TECH (SHENZHEN) CO LTD
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