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Iris recognition biometric systems apply mathematical pattern-recognition techniques to images of the irises of an individual's eyes.. Iris recognition is an automated method of biometric identification that uses mathematical pattern-recognition techniques on video images of one or both of the irises of an individual's eyes, whose complex patterns are unique, stable, and can be seen from some ...
Iris is a flowering plant ... [21] [22] Wylie et al., 2014, [22] made the first identification of Narcissus mosaic virus ... It also conveys images of lost love and ...
Section Iris. Iris adriatica Trinajstic ex Mitic; Iris albertii Reg. Iris albicans – white cemetery iris, white flag iris; Iris alexeenkoi Grossh.
Multimodal biometric systems can obtain sets of information from the same marker (i.e., multiple images of an iris, or scans of the same finger) or information from different biometrics (requiring fingerprint scans and, using voice recognition, a spoken passcode).
The features of the iris are one of the most stable features on the human body throughout life. [5] [disputed – discuss] The stability of iris structures is the foundation of the biometric technology which uses iris recognition for identification purposes. [6] [7]
The goal of a recognition system: given an image of an "unknown" person, to find a picture of the same person in a group of "known" or training images. The difficulty is ensuring that this process can be performed in real time. A biometric system identifies images or videos of people automatically. It can operate in two modes:
It is not to be confused with other ocular-based technologies: iris recognition, commonly called an "iris scan", and eye vein verification that uses scleral veins. The human retina is a thin tissue made up of neural cells that is located in the posterior portion of the eye.
The iris consists of two layers: the front pigmented fibrovascular layer known as a stroma and, behind the stroma, pigmented epithelial cells.. The stroma is connected to a sphincter muscle (sphincter pupillae), which contracts the pupil in a circular motion, and a set of dilator muscles (dilator pupillae), which pull the iris radially to enlarge the pupil, pulling it in folds.