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    Facial recognition systems are computer programs that are used for automatically identifying a person. Research on this technology started in the mid 1960s. This technology works by using several facial features in a person's image and comparing these with existing images in the database. Facial recognitions systems are used as an additional and mass security measure and are comparable to the other biometric security systems available today such as retina scanners, fingerprint scanners, etc.

    The Technology behind Facial Recognition Systems

    The first important factor in facial recognition systems is its ability to differentiate between the background and the face. This is especially important when the system has to identify a face within a crowd. The system then makes use of a person's facial features – its peaks and valleys and landmarks – and treats these as nodes that can be measured and compared against those that are stored in the system's database. There are approximately 80 nodes comprising the face print that the system makes use of and this includes the jaw line length, eye socket depth, distance between the eyes, cheekbone shape, and the width of the nose.Facial Recognition System

    Two-Dimensional Facial Recognition Systems

    Before the advent of faster computers and sophisticated imaging software, two-dimensional facial recognition systems were used. The problem that arose from this type of facial recognition system was the fact that the person to be identified must be facing the camera at no more than 35 degrees for accurate identification to be possible. Light differences and facial expressions also contributed to low accuracy in recognition of such systems.

    Three-Dimensional facial Recognition Systems

    The new facial recognition systems make use of three-dimensional images and are thus more accurate than their predecessors. Just like two-dimensional facial recognition systems, these systems make use of distinct features in a human face and use them as nodes to create a face print of a person. Unlike two-dimensional face recognition systems, however, they have the ability to recognize a face even when it is turned 90 degrees away from the camera. Moreover, they are not affected by the differences in lighting and facial expressions of the subject.

    Steps in Facial Recognition

    The first step in facial recognition is acquiring a real image or a two-dimensional image of the target. The system then determines the alignment of the face based on the position of the nose, the mouth, etc. After alignment, the system makes a facial template and proceeds to match it with the images in the database.

    Applications of Facial Recognition Systems

    Facial recognition systems have a wide range of commercial, government and military applications. Some examples of these are when the Mexican government made use of facial recognition systems to match their voters from their database to verify identity and minimize voter fraud. The system is also slated for use in airports to speed up identity verification processes and to increase security. The system can also be used in ATMs to ensure that the one making the withdrawal is the card's owner.

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    1. pratibha

      10 February, 2012 at 9:41 am

      i want to perform mini project on the topic facial recognisation please can u help me

    2. shiva

      6 January, 2012 at 3:46 pm

        doing a project on use of maths in face recognigation can u help me out ?  

    3. Shafi

      25 October, 2011 at 12:30 pm

      Dear sir,
      we have requirement for Face recognition system, could u send me the price & details. who is the write person to meet.. ASAP… 

    4. JustLook

      3 September, 2011 at 11:19 am

      Face Recognition System is a useful device for identity verification. It will ensure that identity theft never takes place. This technology has become mandatory for any premise with high security needs.

    5. @nu

      18 June, 2011 at 7:58 am

      Hi …
       sir we do our mini project in Face recognition system,we want to do something extra..will you please help..

      • Marlon Franco

        18 June, 2011 at 9:15 am

        how can we help? Just let us know, ok? Thanks

    6. Jim McCree

      14 April, 2011 at 4:05 am

      I hear a company called FaceFirst already won the bid.  http://www.facefirst.com. They have the most advanced system available at this time.

    7. saleem s tevaramani

      9 February, 2011 at 11:13 am

      hi dear all……..
      i am doing project on face recognition using artificial neural networks

      • Ezuan

        10 March, 2011 at 7:45 am

        hye sir .. i currently doing my final project titled face recognition using neural network .. i need to finish it in 4 weeks more .. can u help me sir .. my mind is soo blank now ..

    8. Vicente Troudart

      28 January, 2011 at 2:22 pm

      Hi, I’m Vicente from Panama.  I’m writting you regarding a requirement that needs one agency of the Government of Panama, they need a face recognition system,I need info about yours and if it is possible, a demo of it, also the prices, they need the system urgently, so I appreciate your prompt response.
      Best regards,

      • Doris Cohen

        2 July, 2011 at 5:33 pm

        Hi Vicente,

        I noticed your posting and am hoping you’re the Vicente I’m looking for. If so, please respond to this message. I will check this website regularly.


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