摘要
红外传感器通过探测红外辐射,在其视场范围内,对获得的温度分布进行处理可以判断室内的人数。本文设计了一个基于MLX90621红外传感器检测室内人数的系统,针对大津法确定阈值,对图像进行分割时,造成的误判情况严重,提出了一种基于直方图统计的固定阈值分割法以及多帧采样比较的方法。根据直方图统计,得到固定的全局阈值后,对所得温度分布进行二值化处理,并采用多帧采样比较的方法从而有效地检测出了室内的人数。实验结果表明提出的方法对室内人数的检测率能达到80%以上。
Infrared sensor by detecting the infrared radiation,within its field of view,the number of people can be determined through effective detection of indoor temperature.This paper designed a system that based on MLX90621 infrared sensor to detect the number of indoor people,in term of using Ostu to determine the threshold,caused a serious misjudgement on image segment,a new fixed threshold segmentation based on histogram statistics and multi-frame sampling is proposed.According to the results of the histogram statistics,we get a fixed global threshold for the binarization processing,and then use the method of multi-frame sampling and comparison to detect the number of indoor effectively.
出处
《电子测量技术》
2016年第8期118-121,共4页
Electronic Measurement Technology
