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    Quantization-based data embedding in mapped data
    51.
    发明授权
    Quantization-based data embedding in mapped data 有权
    基于量化的数据嵌入映射数据

    公开(公告)号：US07769202B2

    公开(公告)日：2010-08-03

    申请号：US12124032

    申请日：2008-05-20

    Applicant: Brett A. Bradley ,  John Stach

    Inventor： Brett A. Bradley ,  John Stach

    IPC: H04K1/00

    CPC classification number: G10L19/032 ,  G06T1/005 ,  G06T2200/36 ,  G06T2201/0051 ,  G06T2201/0052 ,  G10L19/018 ,  G10L21/00 ,  H04N1/32144 ,  H04N1/32154 ,  H04N1/32187 ,  H04N1/32197 ,  H04N1/3232 ,  H04N1/32352

    Abstract: Novel methods and systems for quantization based data embedding and reading in host signals, such as image, audio and video signals. To embed auxiliary data in a host signal, an embedder maps the host signal from a first domain into a mapped signal in a second domain. The embedder performs quantization based embedding of auxiliary data into the host signal using quantizers. The quantizers are adapted such that the relationship between corresponding quantizers in the first and second domains satisfies a predetermined constraint. The mapping improves the robustness of the data embedding method by increasing the chances that the embedded data can be recovered by an auxiliary data reader after modifications. A related embedding method projects the mapped signal unto a vector, and specifically, a pseudorandom vector. It performs quantization based embedding on the projected signal. The use of this projection provides added robustness of the embedded data to noise and other forms of distortion.

    Abstract translation: 用于基于量化的数据嵌入和读取在主机信号中的新方法和系统，例如图像，音频和视频信号。 为了将辅助数据嵌入主机信号中，嵌入器将来自第一域的主机信号映射到第二域中的映射信号。 嵌入器使用量化器对辅助数据进行基于量化的嵌入主机信号。 调整量化器，使得第一和第二域中相应的量化器之间的关系满足预定的约束。 该映射通过增加在修改之后辅助数据读取器可以恢复嵌入数据的机会来改善数据嵌入方法的鲁棒性。 相关的嵌入方法将映射的信号投影到向量，具体地说，是伪随机向量。 它对投影信号执行基于量化的嵌入。 使用这种投影可以增加嵌入数据对噪声和其他形式的失真的鲁棒性。

    Arrangement of Objects in Images or Graphics to Convey a Machine-Readable Signal
    52.
    发明申请
    Arrangement of Objects in Images or Graphics to Convey a Machine-Readable Signal 有权
    图像或图形中对象的布置以传送机器可读信号

    公开(公告)号：US20090220121A1

    公开(公告)日：2009-09-03

    申请号：US12464679

    申请日：2009-05-12

    Applicant: John Stach

    Inventor： John Stach

    IPC: G06K9/00 ,  G09G5/00

    CPC classification number: H04N1/32149 ,  G06T1/0064 ,  G06T2201/0051 ,  H04N1/32154 ,  H04N1/32187 ,  H04N1/32208 ,  H04N1/32229 ,  H04N1/32251 ,  H04N1/32309 ,  H04N2201/327

    Abstract: The present invention provides methods and systems related to arranging objects (e.g., circles, dots and other shapes) in images and graphics to convey a machine-readable signal. One claim recites a method including: integrating a plurality of objects in an image or graphic, the objects being arranged in a pattern that is machine-readable by a programmed computer processor, the plurality of objects being integrated in the image or graphic so that the pattern is hidden in the image or graphic through cooperation with design elements of the image or graphic; and providing a visible structure for aiding in machine-reading of the pattern by the programmed computer processor. Of course, other combinations are provided and claimed as well.

    Abstract translation: 本发明提供了在图像和图形中排列对象（例如，圆，点和其他形状）以传送机器可读信号的方法和系统。 一个权利要求描述了一种方法，包括：将多个对象集成在图像或图形中，所述对象被布置成由编程的计算机处理器机器可读的模式，所述多个对象被集成在图像或图形中，使得 图案通过与图像或图形的设计元素的合作隐藏在图像或图形中; 并提供可视结构，以帮助由编程的计算机处理器对图案进行机器读取。 当然，也提供并要求保护其他组合。

    Quantization-Based Data Embedding in Mapped Data
    53.
    发明申请
    Quantization-Based Data Embedding in Mapped Data 有权
    基于量化的数据嵌入映射数据

    公开(公告)号：US20090022360A1

    公开(公告)日：2009-01-22

    申请号：US12124032

    申请日：2008-05-20

    Applicant: Brett A. Bradley ,  John Stach

    Inventor： Brett A. Bradley ,  John Stach

    IPC: G06K9/00

    CPC classification number: G10L19/032 ,  G06T1/005 ,  G06T2200/36 ,  G06T2201/0051 ,  G06T2201/0052 ,  G10L19/018 ,  G10L21/00 ,  H04N1/32144 ,  H04N1/32154 ,  H04N1/32187 ,  H04N1/32197 ,  H04N1/3232 ,  H04N1/32352

    Abstract: Novel methods and systems for quantization based data embedding and reading in host signals, such as image, audio and video signals. To embed auxiliary data in a host signal, an embedder maps the host signal from a first domain into a mapped signal in a second domain. The embedder performs quantization based embedding of auxiliary data into the host signal using quantizers. The quantizers are adapted such that the relationship between corresponding quantizers in the first and second domains satisfies a predetermined constraint. The mapping improves the robustness of the data embedding method by increasing the chances that the embedded data can be recovered by an auxiliary data reader after modifications. A related embedding method projects the mapped signal unto a vector, and specifically, a pseudorandom vector. It performs quantization based embedding on the projected signal. The use of this projection provides added robustness of the embedded data to noise and other forms of distortion.

    Abstract translation: 用于基于量化的数据嵌入和读取在主机信号中的新方法和系统，例如图像，音频和视频信号。 为了将辅助数据嵌入主机信号中，嵌入器将来自第一域的主机信号映射到第二域中的映射信号。 嵌入器使用量化器对辅助数据进行基于量化的嵌入主机信号。 调整量化器，使得第一和第二域中相应的量化器之间的关系满足预定的约束。 该映射通过增加在修改之后辅助数据读取器可以恢复嵌入数据的机会来改善数据嵌入方法的鲁棒性。 相关的嵌入方法将映射的信号投影到向量，具体地说，是伪随机向量。 它对投影信号执行基于量化的嵌入。 使用这种投影可以增加嵌入数据对噪声和其他形式的失真的鲁棒性。

    Data Hiding in Media
    54.
    发明申请
    Data Hiding in Media 有权
    数据隐藏在媒体中

    公开(公告)号：US20080112590A1

    公开(公告)日：2008-05-15

    申请号：US12017636

    申请日：2008-01-22

    Applicant: John Stach

    Inventor： John Stach

    IPC: H04K1/00

    CPC classification number: H04N1/32149 ,  G06T1/0064 ,  G06T2201/0051 ,  H04N1/32154 ,  H04N1/32187 ,  H04N1/32208 ,  H04N1/32229 ,  H04N1/32251 ,  H04N1/32309 ,  H04N2201/327

    Abstract: The present invention provides steganographic embedding and detecting techniques, along with related apparatus. One claim recites a signal detector including: an input and an analyzer. The input obtains media including a signal hidden therein. The signal including plural-bit data, the signal being hidden in the media through an arrangement of message objects. The arrangement is facilitated—at least in part—through thresholding of a steganographic signal representing or carrying the plural-bit data. The analyzer analyzes the media to obtain the plural-bit data. Of course, other combinations are provided and claimed as well.

    Abstract translation: 本发明提供隐写嵌入和检测技术以及相关装置。 一个声明背景信号检测器，包括：输入端和分析器。 该输入获得包含隐藏在其中的信号的介质。 该信号包括多位数据，该信号通过消息对象的布置被隐藏在媒体中。 这种安排便利 - 至少部分地通过代表或携带多位数据的隐写信号的阈值化。 分析仪分析介质以获得多位数据。 当然，也提供并要求保护其他组合。

    Reversible watermarking using expansion, rate control and iterative embedding
    56.
    发明申请
    Reversible watermarking using expansion, rate control and iterative embedding 有权
    可逆水印使用扩展，速率控制和迭代嵌入

    公开(公告)号：US20070053550A1

    公开(公告)日：2007-03-08

    申请号：US11365976

    申请日：2006-02-28

    Applicant: Adnan Alattar ,  John Stach ,  Jun Tian

    Inventor： Adnan Alattar ,  John Stach ,  Jun Tian

    IPC: G06K9/00

    CPC classification number: G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0083 ,  G06T2201/0202 ,  G06T2201/0203 ,  G10L19/018 ,  H04N1/32149 ,  H04N1/32187 ,  H04N1/32229 ,  H04N1/32283 ,  H04N1/32347 ,  H04N1/32352 ,  H04N2201/3233 ,  H04N2201/327

    Abstract: Reversible watermarking methods enable auxiliary data to be embedded in data sets, such as images, audio, video and software. The reversible nature of the method enables the original data set to be perfectly restored. Control systems with feedback loops are used to optimize embedding based on distortion or auxiliary data capacity constraints. The watermarking may be applied recursively to embed several layers, where subsequent layers are embedded into a previously watermarked data set. To recover the original data, each layer is extracted and the data restored in reverse order of the embedding. Sets of elements that are expanded to carry auxiliary data in each layer overlap or are interleaved to maximize embedding capacity or quality of the host data.

    Abstract translation: 可逆水印方法使辅助数据可以嵌入数据集，如图像，音频，视频和软件。 该方法的可逆性使得能够完美地恢复原始数据集。 具有反馈回路的控制系统用于基于失真或辅助数据容量约束优化嵌入。 可以递归地应用水印以嵌入几个层，其中后续层被嵌入到先前加水印的数据集中。 为了恢复原始数据，提取每一层，并以与嵌入相反的顺序恢复数据。 扩展为在每个层中传送辅助数据的元素集合重叠或交织以最大化主机数据的嵌入容量或质量。

    Segmentation in digital watermarking
    57.
    发明授权
    Segmentation in digital watermarking 有权

    公开(公告)号：US07068809B2

    公开(公告)日：2006-06-27

    申请号：US09940872

    申请日：2001-08-27

    Applicant: John Stach

    Inventor： John Stach

    IPC: G06K9/00

    CPC classification number: G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0052 ,  G06T2201/0061 ,  G06T2201/0202

    Abstract: Segmentation techniques are used in methods for embedding and detecting digital watermarks in multimedia signals, such as images, video and audio. A digital watermark embedder segments a media signal into arbitrary shaped regions based on a signal characteristic, such as a similarity measure, texture measure, shape measure or luminance or other color value extrema measure. The attributes of these regions are then used to adapt an auxiliary signal such that it is more effectively hidden in the media signal. In one example implementation, the segmentation process takes advantage of a human perceptibility model to group samples of a media signal into contiguous regions based on their similarities. Attributes of the region, such as its frequency characteristics, are then adapted to the frequency characteristics of a desired watermark signal. One embedding method adjusts a feature of the region to embed elements of an auxiliary signal, such as an error correction encoded message signal. The detecting method re-computes the segmentation, calculates the same features, and maps the feature values to symbols to reconstruct an estimate of the auxiliary signal. The auxiliary signal is then demodulated or decoded to recover the message using error correction decoding/demodulation operations.

    Encoded reference signal for digital watermarks
    58.
    发明授权
    Encoded reference signal for digital watermarks 有权

    公开(公告)号：US07046819B2

    公开(公告)日：2006-05-16

    申请号：US10132060

    申请日：2002-04-24

    Applicant: Ravi K. Sharma ,  John Stach

    Inventor： Ravi K. Sharma ,  John Stach

    IPC: G06K9/00

    CPC classification number: G06T1/0064 ,  G06T2201/0052

    Abstract: This disclosure describes a method for encoding a digital watermark into an image signal that is robust to geometric distortion. The digital watermark is adapted to the host image signal in which it is embedded so as to be imperceptible or substantially imperceptible in the watermarked image when displayed or printed. This digital watermark may be used to determine the geometric distortion applied to a watermarked image, may be used to carry auxiliary information, and may be used to detect and decode a digital watermark embedded in a geometrically distorted version of a watermarked image. Because of its robustness to geometric distortion, the digital watermark is useful for a number of applications for embedding auxiliary data in image signals, including still pictures and video, where the image signal is expected to survive geometric distortion.This method may adapted to other types of media signals such as audio.

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