Iris data extraction

专利名称：Iris data extraction发明人：Yasunari Tosa申请号：US11526096申请日：20060925

公开号：US20100284576A1公开日：20101111

专利附图：

摘要：A process for extracting iris data for biometric identification includes athresholding method where the thresholds are selected according to a nonparametricapproach that considers the grey scale and does not require classifying pixels as edge ornon-edge pixels. An eye image is first acquired, where the eye image has component

images including an iris image with an inner boundary and an outer boundary. The eyeimage has a distribution of grey levels. Component images, such as an iris image or a pupilimage, from the eye image are segmented according to the distribution of grey levels.The inner boundary and outer boundary of the iris image are determined from thecomponent images. The iris image within the inner boundary and outer boundary isprocessed for biometric identification. The component images may be segmented bycreating an eye histogram of pixel intensities from the distribution of grey levels.

申请人：Yasunari Tosa

地址：Arlington MA US

国籍：US

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