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Method for people counting in doorway on DSP video gathering device

A technology of video acquisition and equipment, which is applied in closed-circuit television systems, single input/output registers, calculations, etc., can solve problems such as high maintenance costs, easy wear and tear of equipment, and inability to install, and achieve accurate calculations, The effect of large detection range and convenient maintenance

Inactive Publication Date: 2009-09-23
上海中安电子信息科技有限公司
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Problems solved by technology

The disadvantage of this method is that the accuracy rate is low, it cannot distinguish between people and other non-statistical objects, it depends on the sensitivity of infrared sensors, it is affected by temperature and humidity, and it has poor recognition of some special clothing (such as leather clothing); the second method is based on pedals The statistical method of the passenger flow meter, that is, the detection and analysis of the pedal contact information when people enter and exit the detection area
Although the accuracy of this method is higher than that of the infrared passenger flow meter (about 70%), the equipment is easy to wear, has a low service life (about 8 months), high maintenance costs, and cannot be installed in some specific places

Method used

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  • Method for people counting in doorway on DSP video gathering device
  • Method for people counting in doorway on DSP video gathering device
  • Method for people counting in doorway on DSP video gathering device

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Embodiment

[0020] Such as figure 1 Shown, a kind of method based on the statistics import and export number of DSP video acquisition equipment provided by the present invention, the steps are:

[0021] Step 1. Abstract the head feature model into an elliptic curve model, build a head feature library according to the elliptic curve model, and write it into the detection equipment library for linear correlation use;

[0022] The specific steps are as follows: Step 1.1. According to the approximate circular feature of the human head, the feature model of the human head is abstracted as figure 2 The elliptic curve model shown, let the center point of the elliptic curve model be (x 0 ,y 0 ), the length of the vertical centerline of the elliptic curve model is a, the length of the horizontal centerline of the elliptic curve model is b, the angle between the vertical centerline of the elliptic curve model and the vertical line is θ, and the circumference of the elliptic curve model The coor...

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Abstract

The invention provides a method for people counting in the doorway based on DSP video gathering device. A CCD image acquisition processing device is arranged at the top of a gate and gathers doorway image in real time, a preprocessor preprocesses the gathered image by median filtering algorithm, and the image of moving object is gathered by background modeling. The top head information of obtained people is tracked in a matching way and in real time with a main processor by matching pursuit algorithm to obtain real-time and accurate passenger information. The invention has the advantages that more direct count scene can be provided, detection range is wide, a lot of parameters are provided, installation and maintenance are easy, accuracy in computation is more accurate compared with infrared and pedal manner, and the device is not easy to be damaged.

Description

technical field [0001] The invention relates to a method for counting the number of people entering and exiting based on DSP video acquisition equipment, which is suitable for counting the number of people entering and leaving public places such as shopping malls, gymnasiums or conference rooms, and can also be used for counting the number of people going up and down at each station of a bus vehicle. Number of export methods by technical field. Background technique [0002] At present, there are two common methods of passenger flow statistics: one is the statistical method based on infrared passenger flow meter, that is, when people pass through the detection area, the number of times the infrared rays are cut is used to realize personnel statistics. The disadvantage of this method is that the accuracy rate is low, it cannot distinguish between people and other non-statistical objects, it depends on the sensitivity of infrared sensors, it is affected by temperature and humid...

Claims

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Application Information

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IPC IPC(8): H04N7/18G06K9/00G07C9/00
Inventor 杨辰曲周建武
Owner 上海中安电子信息科技有限公司
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