In this context, we consider the problem of finding the
unattended and missing object in thronged environments
as stations, airports, shopping mall, and the other public
venues. Because the terrorist attacks are concentrated on
the public places which is thronged with people.
Automatic identification of missing or unattended objects
in crowded unconstrained environments is a challenging
work.
The structure of the paper is organized as follows.
Section 2 presents a brief overview of previous related
work. Section 3 explains the principal methods how to
build the timeliness background and compute the object of
the center of mass. Section 4 describes how to use the
object of center of mass to identify it was missing or unattended. In section 5, experimental results are shown.
Discussions and conclusions are provided in Section 6.