Facial Recognition Technical Configuration
- - Normal lighting conditions, not extreme ones. Uniform illumination desirable.
- - Users passing through a security gate at a normal speed.
- - Faces near frontal position (+/-35 degrees left/right deviation, +-20 degrees up/down deviation)
- - Camera in front of the gate, preferably at 2-2.5 meters height.
- - Good quality images, at least 720p.
- - Permanent network connection.
- - Minimum face size for enrolment: 150px x 150px.
- - Minimum face size for recognition: 70px x 70px.
Current BioSurveillance solution is divided into two different applications. Subject management and alarm supervision will be centralized in a master BioSurveillance (mBS) server, as well as the administration of all the local BioSurveillance (iBS) stations.
Every local BioSurveillance station performs the face recognition task from several video streams. The number of cameras that each iBS is able to process simultaneously depends on the computing power of the station, the video resolution and the number of faces that appear in the images.
- - Local alarms can be supervised in real time and they are all sent to the mBS. Therefore, local alarms table has all the alarms of the iBS station.
- - Each iBS updates its blacklist by communicating to the mBS. Thus, subjects table is an exact replica of the centralised subjects table.
- - Local settings can be configured to get the best possible performance.
The main functionality of the server solution is to administrate and configure the whole system in terms of alarms, subjects and iBS stations.
- - Alarms from all the iBS stations are received and added to a global alarms table, which contains alarm information, iBS id and camera id. Alarms are sent as they are generated from iBS stations to mBS, which receives them on-the-go.
- - Subject enrolment and management is conducted in this central station and changes are sent to all the stations, so all subject tables are identical.
- - iBS management tab allows the user to add, edit, delete and configure iBS stations.
- - Last alarms from all iBS are shown on a new interface, so live alarm supervision turns into an easy and intuitive task.
Optionally, a secondary mBS can be installed with a replica of the primary server database. Thus, in case of a failure in the primary mBS, the secondary mBS acts as a failover server.
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