Personnel flow detection method and system based on contour map

The invention belongs to the technical field of personnel flow detection, and provides a personnel flow detection method and system based on an equal-height profile diagram.The method comprises the steps that firstly, infrared light signals reflected by personnel are obtained, and the distance between an infrared light receiving point and the personnel is calculated; according to the calculated distance, establishing a multi-dimensional vector comprising a plane coordinate point, the distance and the time; then, according to the multi-dimensional vector, the plane coordinate point and the distance data at each moment are converted into an equal-height contour map; and finally, marking each contour map, and tracking the mark of each contour map to obtain the motion trail of each contour map so as to realize personnel flow detection. Through tracking the mark of each contour map with the same height, personnel flow detection is realized, personnel can be well identified in the time dimension, and the problems o