Face recognition, fun and secure technology

this is Galaxy Nexus commercial. The mobile is unlocked by face recognition technology (in this commercial, it is unlocked with smiling face). We are already familiar with this secure and fun face recognition technology. Facebook, cameras and other security systems have this interesting technology. Then how is it work? 

flickr.com | by tommerton2012 | Attribution 3.0 Unported (CC BY 3.0)

A facial recognition is a computer application for identifying people from a digital image or a video frame automatically. It is usually used in security systems and this is a rising technology and can be compared to other systems with biometrics like fingerprint or eye iris recognition systems. There are 2 steps, extracting features from the image and identifying it. And there are 3 popular methods for extracting features.

             

flickr.com | by jasonsewell | Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0)

1. Knowledge-based Methods

This technique uses the information about the shape of a face and space between eyes, nose and other features. This is useful when the image or subjects are straight to the camera, but other cases are hard to get information from the image.

2. Feature-based Methods

This technique uses the visual details of the skin, as captured in standard digital or scanned images. This technique, called skin texture analysis, turns the unique lines, patterns, and spots apparent in a person’s skin into a mathematical space.

3. Template matching Methods

Make all the subjects’ templates and compare with image or video. This is not influenced by lights or backgrounds, but affected by size from changing distances and angles. 

For identifying faces, two or three-dimensional face recognition are commonly used. Three-dimensional face recognition is not affected by changes in lighting like other techniques. It can also identify a face from a range of viewing angles, including a profile view, but it takes more time to get face information than 2 dimensional face recognition system.

Pudding Face Match App

This facial recognition system is in cameras, smartphones and applications, Pudding Camera application for smartphone is one of popular app using facial recognition system. Also many other applications and machines are having this system in it, so that people can have more easy and fast use with fun. It is surely more positive reactions than others, but has some difficulty using in real life such as accuracy and pricing. If this can get solved, the facial recognition system will be huge industry in future.

 

DMC Tower 18th~19th Floor, 189 Sungam-ro, Mapo-gu, Seoul, Korea
Global Tel: +82-2-726-1104, 1130 | Fax: +82-2-777-7334 | global@wips.co.kr
Japan Tel: +82-2-726-1113, 1107 | Fax: +82-2-777-7334 | wips-jp@wips.co.kr
China, Taiwan Tel: +82-2-726-1038, 1130 | Fax: +82-2-777-7334 | global@wips.co.kr