Iristunnistus

Iristunnistus, also known as iris recognition, is a biometric identification method that uses the unique and distinctive features of the iris of the human eye for identification. The iris is the colored part of the eye surrounding the pupil, and its complex, random pattern of ridges, furrows, and pigment spots is highly stable throughout a person's life. This makes it an excellent candidate for biometric authentication.

The process of iristunnistus typically involves capturing a high-resolution image of the iris using a specialized camera. This camera often uses near-infrared illumination to enhance the visibility of the iris patterns, even in dark eyes. Once an image is captured, sophisticated algorithms are used to analyze the iris texture and extract a unique digital template, often referred to as an iris code. This code is a mathematical representation of the iris's distinct features.

For identification, the system captures a new image of the iris and generates a new iris code. This new code is then compared against a database of previously stored iris codes. If a match is found with a high degree of confidence, the individual is positively identified. In verification, the system compares the captured iris code against a single, pre-enrolled template to confirm an individual's claimed identity.

Iristunnistus offers several advantages, including high accuracy, non-contact operation, and the stability of iris patterns. It is used in various applications, such as border control, access control to secure facilities, and identity management systems. The distinctiveness and permanence of iris patterns contribute to its reliability as a biometric technology.