Method for improving thermal infrared image body temperature abnormal information extraction precision

Abstract

The invention belongs to the technical field of public place large-range crowd body temperature image processing, and particularly relates to a method for improving thermal infrared image body temperature abnormal information extraction precision, which comprises the following steps of: 1, acquiring a thermal infrared image A covering crowds in a large-range area by utilizing a thermal infrared imager; step 2, obtaining a thermal infrared image C which only contains crowds without interference objects; 3, performing statistical analysis on all pixel values in the thermal infrared image C only containing the crowd to obtain an average value D; 4, subtracting the average value D from all pixel values in the image C to obtain a result image F; and 5, carrying out statistical analysis on the maximum value MAX and the minimum value MIN in all pixel values in the F image, and carrying out numerical comparison. According to the method, most of wavebands irrelevant to information extraction are removed, interference of other substances or noise on spectrums is reduced, and the information extraction precision is improved.

Description

technical field [0001] The invention belongs to the technical field of body temperature image processing of large-scale crowds in public places, and specifically relates to a method for improving the accuracy of extracting abnormal body temperature information of thermal infrared images. Background technique [0002] At present, the novel coronavirus pneumonia epidemic is serious, and there is a great demand for thermal infrared body temperature detection, especially in large-scale crowded places such as stations, buses, carriages, schools, theaters, supermarkets, hospitals, assemblies, markets, and sports fields. Thermal infrared body temperature monitoring is mainly used at the entrance of various places, but at present, the error of thermal infrared body temperature monitoring is relatively large and the monitoring range is small. In order to improve the speed and accuracy of data processing, it has become an urgent research direction for the current thermal infrared imag...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for improving the accuracy of extracting abnormal body temperature information from thermal infrared images, which is used to solve the problem of low data processing speed and abnormal body temperature information extraction in a large area in the prior art. The process is susceptible to other ground objects or noise factors, affecting the technical problem of thermal infrared body temperature anomaly information extraction accuracy