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    • 1. 发明授权
    • Computationally efficient feature extraction and matching iris recognition
    • 计算有效的特征提取和匹配虹膜识别
    • US08861799B2
    • 2014-10-14
    • US13846837
    • 2013-03-18
    • Marios SavvidesKhalid HarunVijayakumar BhagavatulaSungwon ParkYung-Hui Li
    • Marios SavvidesKhalid HarunVijayakumar BhagavatulaSungwon ParkYung-Hui Li
    • G06K9/62G06K9/00
    • G06K9/00604G06K9/00288G06K9/00597G06T7/11G06T2207/10004G06T2207/30201
    • A method and system for uniquely identifying a subject based on an iris image. After obtaining the iris image, the method produces a filtered iris image by applying filters to the iris image to enhance discriminative features of the iris image. The method analyzes an intensity value for pixels in the filtered iris image to produce an iris code that uniquely identifies the subject. The method also creates a segmented iris image by detecting an inner and outer boundary for an iris region in the iris image, and remapping pixels in the iris region, represented in a Cartesian coordinate system, to pixels in the segmented iris image, represented in a log-polar coordinate system, by employing a logarithm representation process. The method also creates a one-dimensional iris string from the iris image by unfolding the iris region by employing a spiral sampling method to obtain sample pixels in the iris region, wherein the sample pixels are the one-dimensional iris string.
    • 一种用于基于虹膜图像唯一地识别对象的方法和系统。 获得虹膜图像后,该方法通过将滤光片应用于虹膜图像来产生滤光虹膜图像,以增强虹膜图像的辨别特征。 该方法分析过滤的虹膜图像中的像素的强度值,以产生唯一地识别被摄体的虹膜代码。 该方法还通过检测虹膜图像中的虹膜区域的内部和外部边界并且将以笛卡尔坐标系表示的虹膜区域中的像素重新映射到分割的虹膜图像中的像素,从而形成分割的虹膜图像,其以 对数极坐标系,采用对数表示过程。 该方法还通过使用螺旋取样方法来展开虹膜区域来获得来自虹膜图像的一维虹膜串,以获得虹膜区域中的样本像素,其中样本像素是一维虹膜串。
    • 4. 发明申请
    • Computationally Efficient Feature Extraction and Matching Iris Recognition
    • 计算有效的特征提取和匹配虹膜识别
    • US20130236067A1
    • 2013-09-12
    • US13846837
    • 2013-03-18
    • Marios SavvidesKhalid HarunVijayakumar BhagavatulaSungwon ParkYung-Hui Li
    • Marios SavvidesKhalid HarunVijayakumar BhagavatulaSungwon ParkYung-Hui Li
    • G06K9/00
    • G06K9/00604G06K9/00288G06K9/00597G06T7/11G06T2207/10004G06T2207/30201
    • A method and system for uniquely identifying a subject based on an iris image. After obtaining the iris image, the method produces a filtered iris image by applying filters to the iris image to enhance discriminative features of the iris image. The method analyzes an intensity value for pixels in the filtered iris image to produce an iris code that uniquely identifies the subject. The method also creates a segmented iris image by detecting an inner and outer boundary for an iris region in the iris image, and remapping pixels in the iris region, represented in a Cartesian coordinate system, to pixels in the segmented iris image, represented in a log-polar coordinate system, by employing a logarithm representation process. The method also creates a one-dimensional iris string from the iris image by unfolding the iris region by employing a spiral sampling method to obtain sample pixels in the iris region, wherein the sample pixels are the one-dimensional iris string.
    • 一种用于基于虹膜图像唯一地识别对象的方法和系统。 获得虹膜图像后,该方法通过将滤光片应用于虹膜图像来产生滤光虹膜图像,以增强虹膜图像的辨别特征。 该方法分析过滤的虹膜图像中的像素的强度值,以产生唯一地识别被摄体的虹膜代码。 该方法还通过检测虹膜图像中的虹膜区域的内部和外部边界并且将以笛卡尔坐标系表示的虹膜区域中的像素重新映射到分割的虹膜图像中的像素,从而形成分割的虹膜图像,其以 对数极坐标系,采用对数表示过程。 该方法还通过使用螺旋取样方法来展开虹膜区域来获得来自虹膜图像的一维虹膜串,以获得虹膜区域中的样本像素,其中样本像素是一维虹膜串。