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    • 1. 发明授权
    • Spectral visible edge marking for steganography or watermarking
    • 用于隐写或水印的光谱可见边缘标记
    • US08947744B2
    • 2015-02-03
    • US13526820
    • 2012-06-19
    • Andrew F. KurtzKurt M. SchroederMajid Rabbani
    • Andrew F. KurtzKurt M. SchroederMajid Rabbani
    • H04N1/40
    • G06K19/0614B42D25/333B42D25/382B42D25/387G06K1/121G06K19/06103H04N1/32133H04N2201/327H04N2201/3271
    • A print media (200) comprises paper or other substrate, on which image content, whether text or images are printed with accompanying hidden data (220). The image content is printed with one or more normal printing process visible colorants (340), while the hidden data (220) is printed with spectral edge markers (320). The spectral edge marker materials (320) have a substantial spectral absorption just outside the human visible spectrum, and only slight visible absorption, which is masked by the visible colorants (340). Although the hidden data is nominally visually imperceptible, an image capture device (250) having a visible spectral response that extends into a spectral region just outside the visible spectrum where the spectral edge marker absorption occurs, can then detect the hidden data.
    • 打印介质(200)包括纸或其他基板,图像内容,文本或图像是否随着隐藏数据被打印(220)。 图像内容用一个或多个正常打印过程可见的着色剂(340)打印,而隐藏数据(220)用光谱边缘标记(320)打印。 光谱边缘标记材料(320)在人类可见光谱外部具有实质的光谱吸收,并且只有轻微的可见光吸收,其被可见的着色剂(340)掩蔽。 虽然隐藏的数据在名义上视觉上是不可察觉的,但是具有可见光谱响应的图像捕获装置(250)可以检测隐藏的数据,该可见光谱响应延伸到光谱边缘标记物吸收发生的可见光谱之外的光谱区域。
    • 2. 发明授权
    • Spectral edge marking for steganography or watermarking
    • 用于隐写或水印的光谱边缘标记
    • US08941886B2
    • 2015-01-27
    • US13526837
    • 2012-06-19
    • Andrew F. KurtzKurt M. SchroederMajid Rabbani
    • Andrew F. KurtzKurt M. SchroederMajid Rabbani
    • H04N1/40
    • C09D11/037B42D25/382B42D25/387C09D11/32G06K1/121G06K19/06103G06K19/0614H04N1/3224H04N1/32309H04N1/32331
    • A method for providing digital watermarking for text or images that uses spectral edge marking materials (320) printed on a print media (200) to embed hidden data (220). The spectral edge markers (320) have an absorption spectrum at the edge of the human visible spectrum, either at the UV edge or IR edge, which provides an optical density that is generally imperceptible to humans, but which can be detected by an image capture device (250). The crosstalk of visible optical absorption provided by these materials is largely masked by the presence of visible colorant(s) (340), with only small color differences between areas with and without the spectral edge markers (320). The image capture device (250) has a visible spectral response that extends into a spectral region just outside the visible spectrum where the spectral edge marker absorption occurs, and can be operated to detect the hidden data.
    • 一种用于为文本或图像提供数字水印的方法,该方法使用打印在打印介质(200)上的光谱边缘标记材料(320)来嵌入隐藏数据(220)。 光谱边缘标记(320)在人类可见光谱的边缘处具有在UV边缘或IR边缘处的吸收光谱,其提供通常对人类不可察觉的光密度,但是可以通过图像捕获来检测 设备(250)。 由这些材料提供的可见光吸收的串扰在很大程度上被可见色素(340)的存在所遮蔽,在具有和不具有光谱边缘标记(320)的区域之间仅具有小的色差。 图像捕获装置(250)具有可见的光谱响应,其延伸到刚好在发生光谱边缘标记吸收的可见光谱外部的光谱区域中,并且可以操作以检测隐藏的数据。
    • 3. 发明申请
    • SPECTRAL EDGE MARKING FOR STEGANOGRAPHY OR WATERMARKING
    • 频谱边缘标记用于STEGANOGRAPHY或WATERMARKING
    • US20130335784A1
    • 2013-12-19
    • US13526837
    • 2012-06-19
    • Andrew F. KurtzKurt M. SchroederMajid Rabbani
    • Andrew F. KurtzKurt M. SchroederMajid Rabbani
    • G06K15/02H04N1/40
    • C09D11/037B42D25/382B42D25/387C09D11/32G06K1/121G06K19/06103G06K19/0614H04N1/3224H04N1/32309H04N1/32331
    • A method for providing digital watermarking for text or images that uses spectral edge marking materials (320) printed on a print media (200) to embed hidden data (220). The spectral edge markers (320) have an absorption spectrum at the edge of the human visible spectrum, either at the UV edge or IR edge, which provides an optical density that is generally imperceptible to humans, but which can be detected by an image capture device (250). The crosstalk of visible optical absorption provided by these materials is largely masked by the presence of visible colorant(s) (340), with only small color differences between areas with and without the spectral edge markers (320). The image capture device (250) has a visible spectral response that extends into a spectral region just outside the visible spectrum where the spectral edge marker absorption occurs, and can be operated to detect the hidden data.
    • 一种用于为文本或图像提供数字水印的方法,该方法使用打印在打印介质(200)上的光谱边缘标记材料(320)来嵌入隐藏数据(220)。 光谱边缘标记(320)在人类可见光谱的边缘处具有在UV边缘或IR边缘处的吸收光谱,其提供通常对人类不可察觉的光密度,但是可以通过图像捕获来检测 设备(250)。 由这些材料提供的可见光吸收的串扰在很大程度上被可见色素(340)的存在所遮蔽,在具有和不具有光谱边缘标记(320)的区域之间仅具有小的色差。 图像捕获装置(250)具有可见的光谱响应,其延伸到刚好在发生光谱边缘标记吸收的可见光谱外部的光谱区域中,并且可以操作以检测隐藏的数据。
    • 7. 发明授权
    • Spectral edge marking for steganography or watermarking
    • 用于隐写或水印的光谱边缘标记
    • US08867782B2
    • 2014-10-21
    • US13526803
    • 2012-06-19
    • Andrew F. KurtzKurt M. Schroeder
    • Andrew F. KurtzKurt M. Schroeder
    • G06K9/00
    • B41M3/10B42D25/333B42D25/382B42D25/387C09D11/50G07D7/005G07D7/0056G07D7/1205
    • A system for detecting visibly hidden content on a print media (200) in which image content is printed with one or more normal printing process visible colorants (340), and which further includes embedded hidden data (220) printed with spectral edge markers (320). These spectral edge marker materials (320) have a substantial spectral absorption just outside the human visible spectrum, either at the UV edge or IR edge, but only slight visible absorption which is masked by the visible colorants (340). Although the hidden data is nominally visually imperceptible, an image capture device (250) having a visible spectral response from at least one spectrally distinct color imaging channel that extends into a spectral region just outside the visible spectrum where the spectral edge marker absorption occurs, can then detect the hidden data.
    • 一种用于在打印介质(200)上检测可视隐藏内容的系统,其中使用一个或多个正常打印处理可见着色剂(340)打印图像内容,并且还包括印有光谱边缘标记(320)的嵌入隐藏数据(220) )。 这些光谱边缘标记材料(320)在UV边缘或IR边缘处具有恰好在人类可见光谱外部的实质光谱吸收,但是仅由可见色素(340)掩蔽的轻微可见光吸收。 尽管隐藏的数据在视觉上看不明显,但是具有至少一个光谱不同的彩色成像通道的可见光谱响应的图像捕获设备(250)可以延伸到发生光谱边缘标记吸收的可见光谱正好的光谱区域内, 然后检测隐藏的数据。
    • 8. 发明申请
    • SPECTRAL EDGE MARKING FOR STEGANOGRAPHY OR WATERMARKING
    • 频谱边缘标记用于STEGANOGRAPHY或WATERMARKING
    • US20130336525A1
    • 2013-12-19
    • US13526803
    • 2012-06-19
    • Andrew F. KurtzKurt M. Schroeder
    • Andrew F. KurtzKurt M. Schroeder
    • G06K9/62
    • B41M3/10B42D25/333B42D25/382B42D25/387C09D11/50G07D7/005G07D7/0056G07D7/1205
    • A system for detecting visibly hidden content on a print media (200) in which image content is printed with one or more normal printing process visible colorants (340), and which further includes embedded hidden data (220) printed with spectral edge markers (320). These spectral edge marker materials (320) have a substantial spectral absorption just outside the human visible spectrum, either at the UV edge or IR edge, but only slight visible absorption which is masked by the visible colorants (340). Although the hidden data is nominally visually imperceptible, an image capture device (250) having a visible spectral response from at least one spectrally distinct color imaging channel that extends into a spectral region just outside the visible spectrum where the spectral edge marker absorption occurs, can then detect the hidden data.
    • 一种用于在打印介质(200)上检测可视隐藏内容的系统,其中使用一个或多个正常打印处理可见着色剂(340)打印图像内容,并且还包括印有光谱边缘标记(320)的嵌入隐藏数据(220) )。 这些光谱边缘标记材料(320)在UV边缘或IR边缘处具有恰好在人类可见光谱外部的实质光谱吸收,但是仅由可见色素(340)掩蔽的轻微可见光吸收。 尽管隐藏的数据在视觉上看不明显,但是具有至少一个光谱不同的彩色成像通道的可见光谱响应的图像捕获设备(250)可以延伸到发生光谱边缘标记吸收的可见光谱正好的光谱区域内, 然后检测隐藏的数据。