People counting method and device

Abstract

The invention relates to the field of video monitoring, and especially relates to a people counting method and device. The objective of the invention is to solve the problem that the existing head detection algorithm only utilizes head contour information, so round objects which are similar to the head shape, the head shadow and the like are easy to be determined as the head region by mistake, so that the head region determination accuracy can be improved. According to the embodiments of the invention, the following method is adopted, the method is that a depth value in a corresponding depth map is acquired through a head region detected in an inputted image, the acquired depth value is compared with a depth threshold value of a preset real head region, and the detected region is judged whether to be a real head region according to the comparison result. Three-dimensional information is adopted, and the depth value of the detected head region is compared with the depth threshold value of the set head region, so possibility that the round objects in the image which are similar to the head shape, the head shadow and the like are easy to be determined as the head region by mistake due to the reason that only the head contour information is utilized can be reduced, and the head region determination accuracy can be improved, so that the people counting accuracy can be improved.

Description

technical field [0001] The invention relates to the field of video surveillance, in particular to a method and device for counting people. Background technique [0002] Today, with the increasing level of information management, real-time estimation of passenger flow in supermarkets, shopping malls, stations, banks and other places with huge flow of people, passenger flow distribution analysis, congestion degree estimation and other passenger flow data statistics have become the first for public area management. An effective way to obtain background information. [0003] The general people counting system is to fix the camera at a commanding height, point the lens at the entrance and exit of shopping malls, stations, etc., and perform a series of processing on the obtained image sequence, so as to count the flow of people in the area within a certain period of time. At present, most of the head detection algorithms are implemented by machine learning methods. Taking the mac...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a method and device for counting people to solve the problem that the current head detection algorithm only uses the contour information of the head to judge the head area, and the accuracy rate of head area determination is not high, resulting in inaccurate counting of people.

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