An iris database is a collection of images that contain, at a minimum, the iris region of the eye. The images are typically collected by sensors that operate in the visible spectrum, 380–750 nm, or the near infrared spectrum (NIR), 700–900 nm. The visible spectrum image can be stored as a color image or as an intensity image. The NIR image is always stored as an intensity image.
Successful biometric research requires the analysis of human data. For biometric researchers to demonstrate the effectiveness of proposed iris segmentation/recognition techniques and allow fair comparisons with existing methods, publicly available iris databases are required. The perfect iris-image database should be sufficiently large, consist of images collected from a large and heterogeneous group of subjects, and contain images that depict noise factors typically encountered in real world applications. In the following sections, several publicly and freely available iris-image...
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