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Method and terminal for counting number of people by infrared thermometer
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An infrared thermometer and people counting technology, applied in the field of image processing, can solve the problems of large amount of calculation, large error and low accuracy of statistical results, and achieve the effect of high statistical accuracy and small amount of calculation
Pending Publication Date: 2020-08-28
SHENZHEN CENCOM TECH
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Problems solved by technology
These indirect people counting methods have a large amount of calculation and large errors, and the accuracy of the statistical results is not high.
Method used
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Embodiment 1
[0057] Please refer to figure 1 , Embodiment 1 of the present invention is a method for counting the number of people with an infrared thermometer, comprising the following steps:
[0058] S1. Obtain an infrared image and a visible light image respectively.
[0059] In this embodiment, after step S1, it further includes: performing image registration and time stamp alignment processing on the infrared image and the visible light image.
[0060] S2. Obtain pixel values in the current frame of the infrared image whose temperature is greater than or equal to a preset temperature, to obtain a first pixel value.
[0061] In this embodiment, the preset temperature can be set as required, for example, the preset temperature can be set to 30.5-35°C, and each pixel on the infrared image will correspond to a certain temperature value, which will be greater than or equal to the preset temperature The first pixel value is obtained by performing statistics on the pixel values, and the ...
Embodiment 2
[0074] Please refer to figure 2 , the second embodiment of the present invention is:
[0075] A terminal 100 for counting people with an infrared thermometer, corresponding to the method in Embodiment 1, including a memory 1, a processor 2, and a computer program stored in the memory 1 and operable on the processor 2, so that The following steps are realized when the processor 2 executes the computer program:
[0076] Obtain infrared images and visible light images respectively;
[0077] Obtain the pixel value of the temperature greater than or equal to the preset temperature in the current frame of the infrared image to obtain the first pixel value;
[0078] Obtain the pixel value of the temperature greater than or equal to the preset temperature in the previous frame image of the current frame of the infrared image, and obtain the second pixel value;
[0079] When the difference between the first pixel value and the second pixel value is greater than or equal to a preset...
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Abstract
The invention discloses a method and terminal for counting the number of people by an infraredthermometer, and the method comprises the steps: obtaining a pixel value of which the temperature is greater than or equal to a preset temperature in a current frame of an infrared image, and obtaining a first pixel value; obtaining a pixel value of which the temperature is greater than or equal to a preset temperature in a previous frame of image of the current frame of the infrared image to obtain a second pixel value; when the difference value between the first pixel value and the second pixel value is greater than or equal to a preset difference value, obtaining the current frame of the visible light image; obtaining the number of human faces in the current frame of the visible light image toobtain the number of first human faces; obtaining the number of human faces in the previous frame of image of the current frame of the visible light image to obtain the number of second human faces;when the difference value between the first face number and the second face number is greater than or equal to 0, obtaining a historical cumulative face number; and adding the historical cumulative face number to the difference between the first face number and the second face number to obtain a current cumulative face number. The method has the advantages that the calculation amount is small, andthe statistical result of the number of faces can be accurately obtained, and noise reduction processing is not needed.
Description
technical field [0001] The invention relates to the technical field of image processing, in particular to a method and a terminal for counting people by an infrared thermometer. Background technique [0002] The problem of indoor people counting has always been a difficult problem in the field of computer vision, and it has important research value. For example: the counting of the number of people in the classroom can help to count the attendance rate of the class, and the counting of the number of people in the theater can help count the box office. A commonly used method for identifying the number of people in the prior art is to establish a corresponding relationship between the number of people in a crowd and the characteristics of the crowd, and to count the number of people by analyzing the characteristics of the crowd. Commonly used features include pixel features, texture features, and feature point features. These indirect people counting methods have a large amo...
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