The term biometric is derived from Greek words such as bio (life) and metric (to measure). The Biometric is used to recognize his or her behavior characteristics of a person. This kind of identification is preferred over traditional methods, comprising PIN numbers and passwords for its accuracy and case sensitiveness. Based on the development, this system can be used as an identification system. These systems are divided into various types like fingerprints, vein pattern, DNA, hand geometry, voice pattern, signature dynamics, iris pattern, and face detection. This article discusses new infrared LED for biometric identification applications.
What is an Infrared (IR) LED
An infrared (IR) LED is also known as an infrared transmitter. IR LED is a special purpose LED that transfers IR rays in the 760 nm wavelength range. Generally, IR LEDs are made of aluminum gallium arsenide or gallium arsenide. They, along with infrared receivers are frequently used as sensors.
The appearance of IR LED is similar to a common LED. Since the human eye cannot grasp the IR radiations, it is not possible for an individual to recognize whether the LED is working or not, unlike a normal LED. To overcome this, a cell phone camera can also be used. The mobile camera can display as the infrared rays being started from the infrared LED in a circuit.
IR LED for Biometric ID Applications
The IR LED technology is pretty matured, which promises constant income with the rise of different applications, this LED is probable to become highlighted technology to LED makers again. IR LED light is an essential light source for the emerging technologies. These LEDs are used with the combination of ID technologies and sensors. Infrared LEDs can be used in special biometric ID applications like iris recognition, facial recognition, etc. With the growing technologies of an innovative application, infrared LED is expected to grip great market potential.
The applications of an infrared LED includes biometric applications like facial recognition, iris recognition, etc.
A facial recognition system is a PC application for routinely finding or confirming a person from a digital image or a video frame from a video source. It is normally used in security systems and can be matched to other biometric systems like eye iris recognition, fingerprint systems.
The IR LED offers different viewing angles and also features. The main function of the infrared LED is to improve accuracy while using the facial recognition on a device. IR LED for facial recognition has been incorporated in the laptops well-suited to Windows hello, and it obeys with the necessities to operate the system.
By using one to more LEDs, the face recognition device can work correctly in a range of different light sources. Apart from using the infrared LED products in facial recognition, it is also used for iris scanning and is associated with consumers to work on verification.
The humanoid eye offers a number of prospects for biometric identification. This comprises measurements of the iris, veins of the eye and retina. This kind of biometric systems is widely used for identification and authentication in government and law implementation levels, but are also open to make a spot in the mobile verification space.
Iris recognition is the most consistent biometric identification methods. In brief, iris scanners brighten the eyes with infrared (IR) light and a camera captures a photograph. A special software is used to detect the pattern of the iris, which is exclusive to each separately.
In the process of iris recognition system, there are two steps mainly enrollment and verification. The person stands in front of a camera and has their eyes digitally photographed with both ordinary light and invisible infrared LEDs (a type of light used in night vision systems that have a slightly longer wavelength than ordinary red light). In iris recognition, infrared LED helps to show up the unique features of darkly colored eyes that do not stand out clearly in ordinary light. These two digital photographs are then analyzed by a computer that removes unnecessary details (such as eyelashes) and identifies around 240 unique features (about five times more “points of comparison” as fingerprint systems use).
These features, unique to every eye, turn into a simple, 512-digit number called an Iris code that is stored, alongside your name and other details, in a computer database. The enrollment process is completely automatic and usually, takes no more than a couple of minutes. In verification process. You simply stand in front of another iris scanner and have your eye photographed again. The system quickly processes the image and extracts your Iris code before comparing it against the hundreds, thousands, or millions stored in its database. If your iris code matches one of the stored ones, you’re positively identified; if not It means you’re not known to the system.
Thus, this is all about IR LED in biometric applications which include facial recognition and IRIS recognition.We hope that you have got a better understanding of this concept. Furthermore, any doubts regarding this article or to implement electrical projects, please give your feedback by commenting in the comment section below. Here is a question for you, what are the applications of IR LED?