The problem of access control is separated in two main sectors:
- person inspection;
- luggage inspection.
For the first sector, developed tecnology adopts sensors in emission and reception
which use infrared frequency (IR), not heavy and intrusive towards the man; it's thinkable,
obviously, a rapid conversion of tecnology regarding the use of sensors in different
frequency bands (low level X band).
As far as, finally, luggage inspection, MGRI tecnology uses the same sensors currently
employed, but with different survey in the time (this is done using several sensor employing
procedures) and different algorithm of pattern recognition and of their constituent materials.
Through IR tecnique, positive comparisons are achieved both from laboratory experiments, and from
real tests led next to international airports in Italy.
This system consists of:
- Sensor emission;
- sensor Reception IR images;
- interface with notebook and relative acquisition software and synchronisms;
- notebook and relative processing softwares and GUI (Graphical User Interface).
Operating procedure forsees the transit of the subjects in a fit area of real time image
acquisition, in executing a preprocess and real time filtering and presentation of results on monitor,
through two produced images.
Relatively to the luggage control the results reported on following slides are achieved, through
the use of current employed sensors (operating in microwave band) but with the use of the new procedure
of data acquisition.
|
 |
 |
|
Inquiry on a person which carries a metallic object and a plastic one.
On right: previous image elaboration for showing the presence of metallic objects.
|
Laboratory Test.
The experiments are carried out with a device able to change many operative parameters in acquisition phase
and with remarkable capacity of interfacing with digitalizing system and of rough data processing, derived
from sensors.
 |
 |
|
Result of acquisition of sensor informations. On right: previous image processing in which it's
showed in green the presence of explosive.
|
Airport Test
In the January month of 2002 a research is carried out live and in real time close to access control of
an italian international airport gate.
 |
 |
|
On monitor are reported the results of conventional used machines and the modality of interfacing
of suggested system with pre-existent one. On right: elaboration of the images directly from
conventional monitor.
|
|
