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    • 3. 发明授权
    • Method for authenticating an object
    • 验证对象的方法
    • US09123190B2
    • 2015-09-01
    • US13755296
    • 2013-01-31
    • Thomas D. PawlikJudith A. BoseRonald S. CokNelson A. Blish
    • Thomas D. PawlikJudith A. BoseRonald S. CokNelson A. Blish
    • H04N7/18G07D7/12
    • G07D7/12
    • A method for authenticating an object that includes providing a label (12) with invisible indicia (14) printed with optically active material on a reflective substrate; providing a device that has a digital camera (18) having a light source (20), an image sensor (22), a first polarizing filter (24) having a first orientation, and a second polarizing filter (26) having a second orientation; illuminating the label with the light from the light source through the first polarizing filter; forming an image with the image sensor using reflected light from the label wherein the reflected light passes through the second polarizing filter prior to reaching the sensor; wherein the second polarizing filter makes the invisible indicia visible; and authenticating the object.
    • 一种用于认证对象的方法,包括在反射基板上提供标有印有光学活性材料的不可见标记(14)的标签(12) 提供一种具有数字照相机(18)的装置,其具有光源(20),图像传感器(22),具有第一取向的第一偏振滤光器(24)和具有第二取向的第二偏振滤光器(26) ; 用来自光源的光通过第一偏振滤光器照射标签; 使用来自标签的反射光与图像传感器形成图像,其中反射光在到达传感器之前穿过第二偏振滤光器; 其中所述第二偏振滤光器使所述不可见标记可见; 并验证该对象。
    • 8. 发明申请
    • METHOD FOR AUTHENTICATING AN OBJECT
    • 验证对象的方法
    • US20140210998A1
    • 2014-07-31
    • US13755296
    • 2013-01-31
    • Thomas D. PawlikJudith A. BoseRonald S. CokNelson A. Blish
    • Thomas D. PawlikJudith A. BoseRonald S. CokNelson A. Blish
    • G06K7/10
    • G07D7/12
    • A method for authenticating an object that includes providing a label (12) with invisible indicia (14) printed with optically active material on a reflective substrate; providing a device that has a digital camera (18) having a light source (20), an image sensor (22), a first polarizing filter (24) having a first orientation, and a second polarizing filter (26) having a second orientation; illuminating the label with the light from the light source through the first polarizing filter; forming an image with the image sensor using reflected light from the label wherein the reflected light passes through the second polarizing filter prior to reaching the sensor; wherein the second polarizing filter makes the invisible indicia visible; and authenticating the object.
    • 一种用于认证对象的方法,包括在反射基板上提供标有印有光学活性材料的不可见标记(14)的标签(12) 提供一种具有数字照相机(18)的装置,其具有光源(20),图像传感器(22),具有第一取向的第一偏振滤光器(24)和具有第二取向的第二偏振滤光器(26) ; 用来自光源的光通过第一偏振滤光器照射标签; 使用来自标签的反射光与图像传感器形成图像,其中反射光在到达传感器之前穿过第二偏振滤光器; 其中所述第二偏振滤光器使所述不可见标记可见; 并验证该对象。