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公开(公告)号：EP2766716A2
公开(公告)日：2014-08-20
申请号：EP12853231.4
申请日：2012-10-04
申请人： Lumidigm, Inc.
IPC分类号： G01N21/86
CPC分类号： G06K9/0004
摘要： Methods and sensors are disclosed for executing a biometric function. Illumination light is generated and directed to a deformable layer when the deformable layer is in a state of deformation resulting from pressure applied to the deformable layer by a skin site. Light scattered from the deformable layer is received. A fingerprint pattern of the skin site is determined from the received light. The biometric function is performed with the determined fingerprint pattern.
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公开(公告)号：EP2697970A1
公开(公告)日：2014-02-19
申请号：EP12771778.3
申请日：2012-04-11
申请人： Lumidigm, Inc.
IPC分类号： H04N7/18
CPC分类号： G06T7/0073 , G06K9/00013 , G06K9/00033 , G06K9/0012 , G06K9/00899 , G06K9/2036 , G06K9/4661 , G06T7/586 , G06T2207/10152
摘要： Methods and devices of studying a predefined portion of an object having a feature of interest are disclosed. The feature of interest defines a class of objects that includes the object. Light sources directly illuminate the object from different illumination directions. The light sources are maintained in a stable configuration relative to the object. For each illumination direction, an image is generated from light scattered from the object with a camera maintained in a stable configuration relative to the light sources. A methodology derived from machine learning for the class of objects is applied to filter the generated images are filtered for a characteristic consistent with the feature of interest. Surface gradients are determined from the filtered images and integrated to generate a topography of a surface of the object.
摘要翻译： 公开了研究具有感兴趣特征的对象的预定义部分的方法和装置。 感兴趣的特征定义了一类包含该对象的对象。 光源从不同的照明方向直接照亮物体。 光源相对于物体保持在稳定的构造。 对于每个照明方向，从相对于光源维持在稳定配置的照相机的物体散射的光产生图像。 应用从对象类的机器学习得出的方法来过滤生成的图像，以便与感兴趣的特征一致的特征进行过滤。 从滤波图像确定表面梯度，并将其整合以产生物体表面的形貌。
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