Occluded people would be divided into each other by the Gaussian-smoothing histograms. The matching relation of each person in different cameras could be found and thus the human tracking is realized.

在此基础上，依据直方图模型将互相遮挡的人体分割开来，最后根据求取的人体像素点的匹配关系来确定不同摄像机中同一个人的对应关系。

youdao

Nope, instead your phone has been tracking information about its location in relation to wi-fi hot spots and cellular towers so it can figure out where it is.

FORBES: We Don't Want To Know Where You Are, Apple Says