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Method and device for tracking crowds and counting pedestrian flow

A statistical method and technology of people flow, applied in the field of crowd tracking and people flow statistics

Active Publication Date: 2015-07-01
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of this, the present invention provides a method and device for crowd tracking and people flow statistics, which can effectively solve the shortcomings of existing methods in densely populated and complex scenes, and have high performance in tracking and counting crowds in dense scenes. Accuracy and Stability

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  • Method and device for tracking crowds and counting pedestrian flow
  • Method and device for tracking crowds and counting pedestrian flow
  • Method and device for tracking crowds and counting pedestrian flow

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Embodiment Construction

[0102] The present invention will be described in further detail below in conjunction with specific examples, but the embodiments of the present invention are not limited thereto, and the process parameters not specifically indicated can be carried out with reference to conventional techniques.

[0103] See figure 1 , the crowd tracking and people flow counting method of an embodiment of the present invention comprise the following steps:

[0104] S101. Obtain a real-time color map and depth map of the scene;

[0105] S102. Perform image preprocessing on the color image and the depth image;

[0106] S103. Perform background subtraction on the depth map after image preprocessing to obtain a moving foreground depth map;

[0107] S104. Detecting the moving foreground depth map and segmenting the head area of ​​the pedestrian;

[0108] S105. Determine the head area of ​​the pedestrian and remove the non-head area; this can effectively filter out false targets and avoid affectin...

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Abstract

The invention provides a method and a device for tracking crowds and counting pedestrian flow. The method includes acquiring real-time color images and depth images of scenes; preprocessing the images; carrying out difference operation on backgrounds of the depth images to obtain moving foreground depth images; detecting pedestrian head regions in the foreground depth images and dividing the pedestrian head regions from the foreground depth images; judging the head regions and removing non-head regions; matching and tracking pedestrian heads according to joint matching probability functions; creating head state spatial switching relational graphs to count the pedestrian heads. The method and the device have the advantages that the position of each pedestrian can be tracked and recorded by the aid of the method and the device, the speeds and the directions of the pedestrians in walking procedures can be computed, the crowds can be tracked under various conditions, and the pedestrian flow can be counted under the various conditions; the method and the device are free of influence of illumination conditions and illumination change; false alarm due to false objects can be filtered out; the device is stable in performance and high in speed, efficiency and accuracy.

Description

technical field [0001] The invention belongs to the technical field of computer vision and pattern recognition, and in particular relates to a method and device for crowd tracking and people flow statistics. Background technique [0002] Accurate and stable crowd tracking and traffic statistics technology has always been an urgently needed technology in the fields of public security and intelligent monitoring. For example, in crowded scenes such as campuses, museums, subway stations, railway stations, etc., effective tracking and counting of the crowd will greatly facilitate daily management and ensure people's safety; The crowd counting in the direction can also better adjust the marketing strategy and bring higher economic benefits. In addition to manual counting methods, the current common automatic people counting methods mainly include the following: [0003] Contact sensor method: This method installs a sensor that senses stepping on the ground. When walking on it, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/20
Inventor 周珣肖江剑宋康康
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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