Latest technology
in the field of biometrics is the Biometric Face Recognition System. While the finger-print devices can still contain a
risk of hacking or duplication, this face recognition system can hardly go
wrong. The fingerprint devices may also be hygienically not well and can expose
to a few ailments. On the other hand, voice recognition systems can also fail
to offer you the finds of results that you are looking for; especially under
those circumstances when a person is suffering from bad health or sore throat. Therefore,
the face system comes to be recognized as an absolutely perfect and advanced one.
Two Types of Systems
This kind of
system can be either in the 2D format or 3D format. This is basically for the purpose
of storing images in certain form as template in database. While
the 2D images in this kind of system are very common, there are hardly a few companies
or organizations which use 3D images. Nevertheless, both these kinds of systems
have their own pros and cons.
The 2D Face Recognition System: Pros and Cons
A 2D system can
work better in case there is moderate illuminating light. It is however influenced
with the pose changes. Also, changes in a person’s face or facial expressions because
of aging or other physical factors, will affect the rate of recognition in this
system. A biometric system which makes use of 2D models, only consider two
dimensions.
The 3D Face Recognition System: Pros and Cons
The advantage of 3D system is that it has
become quite cheap and also faster. However, there is a limited availability of
databases in this kind. Because a human face is a three dimensional figure,
therefore it is quite beneficial to use 3D
biometric face recognition system for precise and exact results. The model database
of 3D has better performance. It must be noted that the 3D data storage or
capturing is also not 100% free of mild variations. Diversified light sources can
create diversified models sometimes for same face. The most important factor is
that when it comes to cost, 2D systems are still very cheap in contrast.
Representation of Face in 2D and 3D Models
In the 2D biometric
face recognition system, representation is done through intensity variation. In
case of 3D models, representation is done by shape variation. 2D automated face
recognition system can discriminate between the faces depending upon color or
the intensity of features on a particular face. In case of 3D system, discrimination
is done on the basis of different shapes of the features of a particular face but
the 3D system uses more reliable basis of face recognition and so it is considered
to be more accurate.
Although 3D systems
are more reliable and offer more accuracy, but there is a wide scope of maturity
and improvement in this kind of biometrics face recognition system. At the same
time, there are constant improvements in 2D systems, which are affecting the popularity
of 3D. More and more companies are these days working on infusing 2D systems because
this is the more feasible form of new technology in management of vital records.
