Indoor falling detection method and system

Abstract

The invention discloses an indoor falling detection method, which comprises the following steps that: obtaining the temperature image of the induction area of a thermopile sensor, wherein the temperature image comprises the temperature value of each pixel in the induction area; according to the temperature image, obtaining a foreground image, and calculating the connected domain of the foregroundimage; judging whether the number of pixels in the connected domain is greater than a first preset value or not; if the number of pixels in the connected domain is greater than the first preset value,judging that the foreground image is the image of a human body target, and judging whether both a line number and a row number occupied by the image in the temperature image do not meet a preset ruleor not; if the both the line number and the row number occupied by the image in the temperature image do not meet the preset rule, judging that the human body target is under a lying / crouching gesture, and judging whether the position of the human body target is a preset position or not; and if the position of the human body target is not the preset position, judging that the human body target falls down. By use of the method, the accuracy of indoor falling detection is improved, and meanwhile, the indoor falling detection method is free from wearing, does not violate privacy and is not affected by ambient light. The invention also discloses an indoor falling detection system which has the above beneficial effects.

Description

technical field [0001] The invention relates to the field of indoor monitoring, in particular to an indoor fall detection method and system. Background technique [0002] In recent years, my country's requirements for indoor monitoring of special groups of people have become higher and higher. If special groups such as the elderly or young children cannot be found and treated in time after falling indoors, it will cause serious harm to their bodies. Therefore, indoor Fall detection technology came into being. At present, indoor fall detection methods are divided into the following three types: one is the indoor fall detection method based on wearable devices. The sudden acceleration, vibration and other data thresholds generated to determine whether the detected person has fallen; the second is to install a camera indoors to observe whether the detected person has fallen through ordinary optical video; the third is to use the pyroelectric infrared sensor to collect human bod...

AI Technical Summary

Problems solved by technology

[0003] However, in real life, the indoor fall detection method based on wearable devices requires the detected person to be equipped with a detection device, which is inconvenient to use; the detection method using ordinary optical video analysis will violate the privacy of the detected person, and the camera will be affected. Influenced by light; pyroelectric infrared sensor has a slow response speed and provides less information, resulting in a high rate of false alarms and false negatives

Images