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公开(公告)号：EP2506189B1
公开(公告)日：2019-11-27
申请号：EP12161924.1
申请日：2012-03-28
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2.发明公开
公开(公告)号：EP2506189A3
公开(公告)日：2014-05-07
申请号：EP12161924.1
申请日：2012-03-28
摘要： A system and method for contactless handprint capture is disclosed that includes an image capture device (14) to capture whole handprint images of a subject hand at each of a plurality of different focal distances, with the image capture device (14) including an imaging camera (32) and an electro-optics arrangement (34) having a plurality of light modulating elements (42) and polarization sensitive optical elements (40) having differing optical path lengths based on polarization states. A control system (38) is coupled to the image capture device (14) to cause the device to capture the handprint images at each of the different focal distances, with each handprint image having a depth-of-focus that overlaps with a depth-of-focus of handprint images at adjacent focal distances such that redundant handprint image data is captured. The control system (38) registers each handprint image with positional data and creates a composite handprint image from the handprint images captured at the different focal distances.
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3.发明公开Apparatus and method for contactless high resolution handprint capture 审中-公开Vorrichtung und Verfahren zur kontaktlosen Handabdruckerfassung mit hoherAuflösung
公开(公告)号：EP2506189A2
公开(公告)日：2012-10-03
申请号：EP12161924.1
申请日：2012-03-28
摘要： A system and method for contactless handprint capture is disclosed that includes an image capture device (14) to capture whole handprint images of a subject hand at each of a plurality of different focal distances, with the image capture device (14) including an imaging camera (32) and an electro-optics arrangement (34) having a plurality of light modulating elements (42) and polarization sensitive optical elements (40) having differing optical path lengths based on polarization states. A control system (38) is coupled to the image capture device (14) to cause the device to capture the handprint images at each of the different focal distances, with each handprint image having a depth-of-focus that overlaps with a depth-of-focus of handprint images at adjacent focal distances such that redundant handprint image data is captured. The control system (38) registers each handprint image with positional data and creates a composite handprint image from the handprint images captured at the different focal distances.
摘要翻译： 公开了一种用于非接触式手印捕获的系统和方法，其包括：图像捕获装置（14），用于在多个不同焦距的每一个处捕获主体手的整个手印图像，图像捕获装置（14）包括成像摄像机 （32）和具有基于极化状态具有不同光程长度的多个光调制元件（42）和偏振敏感光学元件（40）的电光装置（34）。 控制系统（38）耦合到图像捕获设备（14），以使设备在每个不同的焦距下捕获手印图像，每个手印图像具有与深度对比度重叠的焦点深度， 在相邻焦距处的手印图像的焦点，使得捕获冗余的手印图像数据。 控制系统（38）通过位置数据对每个手印图像进行登记，并从不同焦距拍摄的手印图像中生成复合手印图像。
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