  A crucial aspect for selecting optimal areas for commercial advertising is
the probability with which that publicity will be seen. This paper presents a
method based on top-view camera measurement, where the probability of viewing
is estimated according to the trajectories and movements of the head of the
passerby individuals in the area of interest. Using a camera with a depth
sensor, the head of the people in the range of view can be detected and
modeled. That method allows determining the orientation of the head which is
used to estimate the direction of vision. A tracking by detection algorithm is
used to compute the trajectory of each user. The attention given at each
advertising spot is estimated based on the trajectories and head orientations
of the individuals in the area of interest
