中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

59 records (took 0.021 seconds)

    Encoding and Decoding Signals for Digital Watermarking
    21.
    发明申请
    Encoding and Decoding Signals for Digital Watermarking 有权
    用于数字水印的编码和解码信号

    公开(公告)号：US20070110272A1

    公开(公告)日：2007-05-17

    申请号：US11383742

    申请日：2006-05-16

    Applicant: Ravi Sharma ,  John Stach

    Inventor： Ravi Sharma ,  John Stach

    IPC: G06K9/00

    CPC classification number: G06T1/0064 ,  G06T2201/0052

    Abstract: This disclosure describes methods and systems for encoding a digital watermark into and/or detecting a digital watermark from a host (or media) signal such as audio, video or imagery. One implementation involves a method of detecting a digital watermark. The method includes: receiving a host signal carrying a digital watermark; computing attributes of the host signal; using the attributes of the host signal to compute a key; and using the key to detect the digital watermark in a transform domain dependent on the key. Other methods, systems and apparatus are provided as well.

    Abstract translation: 本公开描述了用于从诸如音频，视频或图像的主机（或媒体）信号将数字水印编码到和/或检测数字水印的方法和系统。 一种实现涉及一种检测数字水印的方法。 该方法包括：接收携带数字水印的主机信号; 计算主机信号的属性; 使用主机信号的属性来计算密钥; 并使用该密钥来检测取决于密钥的变换域中的数字水印。 还提供了其他方法，系统和装置。

    Symmetry watermark
    23.
    发明授权
    Symmetry watermark 有权
    对称水印

    公开(公告)号：US07072490B2

    公开(公告)日：2006-07-04

    申请号：US10302753

    申请日：2002-11-22

    Applicant: John Stach

    Inventor： John Stach

    IPC: G06K9/00

    CPC classification number: G06T1/005 ,  G06T1/0064 ,  G06T2201/0052

    Abstract: A digital watermark is generated with radial and circumferential symmetries in a particular domain of a host signal into which it is embedded. These symmetries enable a detector to compute the projective transformation and rotation angle of the embedded signal using only the symmetry properties. The embedded signal may be variable, such as being modulated with a variable message payload, yet the scale and rotation of this variable signal is detectable based on its symmetry properties.

    Abstract translation: 在其嵌入的主机信号的特定域中产生数字水印，具有径向和周向对称性。 这些对称性使得检测器仅使用对称性来计算嵌入信号的投影变换和旋转角度。 嵌入的信号可以是可变的，例如用可变消息有效载荷来调制，但是该可变信号的比例和旋转可以基于其对称性来检测。

    Methods and systems for dealing with perspective distortion in connection with smartphone cameras
    25.
    发明授权
    Methods and systems for dealing with perspective distortion in connection with smartphone cameras 有权
    用于处理与智能相机相关的透视失真的方法和系统

    公开(公告)号：US09398210B2

    公开(公告)日：2016-07-19

    申请号：US13088259

    申请日：2011-04-15

    Applicant: John Stach ,  Ravi K. Sharma

    Inventor： John Stach ,  Ravi K. Sharma

    IPC: H04N5/232 ,  G06T1/00

    CPC classification number: H04N5/23222 ,  G06T1/0021 ,  H04N5/23258 ,  H04N5/23293

    Abstract: Arrangements are detailed to aid a user in positioning a camera-equipped device (e.g., a smartphone) at a particular viewing position relative to an object being imaged. Other embodiments discern the device's viewing position, and then undertake image or other processing that is dependent on such viewpoint. A great number of other features and arrangements are also detailed.

    Abstract translation: 详细的安排是为了帮助用户将相机配备的设备（例如，智能电话机）定位在相对于被成像对象的特定观看位置。 其他实施例分辨设备的观看位置，然后进行取决于这种观点的图像或其他处理。 还详细介绍了许多其他功能和安排。

    Arrangements for Increasing Detection Confidence
    26.
    发明申请
    Arrangements for Increasing Detection Confidence 有权
    增加检测信心的安排

    公开(公告)号：US20130104010A1

    公开(公告)日：2013-04-25

    申请号：US13309960

    申请日：2011-12-02

    Applicant: Geoffrey B. Rhoads ,  John Stach

    Inventor： Geoffrey B. Rhoads ,  John Stach

    IPC: G06F11/07

    CPC classification number: G06T1/0021 ,  G06K9/685 ,  G06K2009/6871 ,  G06T2201/0065 ,  G10L19/018

    Abstract: In one embodiment, a first set of digital data (e.g., an image) is tested for the presence of a certain feature (e.g., a certain face), yielding one of two outcomes (e.g., not-present, or present). If the testing yields the first outcome, no additional testing is performed. If, however, the testing yields the second outcome, further testing is performed to further check this outcome. Such further testing is performed on a second set of digital data that is based on, but different from, the first set of data. Only if the original testing and the further testing both yield the same second outcome is it treated as a valid result. A variety of other features and arrangements are also detailed.

    Abstract translation: 在一个实施例中，测试第一组数字数据（例如，图像）以存在某个特征（例如，某个面部），产生两个结果之一（例如，不存在或存在）。 如果测试产生了第一个结果，则不进行其他测试。 然而，如果测试产生了第二个结果，则进行进一步测试以进一步检查该结果。 对第二组数字数据执行这样的进一步测试，该第二组数字数据基于但不同于第一组数据。 只有当原始测试和进一步测试都产生相同的第二个结果时，才被视为有效的结果。 还详细介绍了各种其他功能和安排。

    METHODS AND SYSTEMS FOR DEALING WITH PERSPECTIVE DISTORTION IN CONNECTION WITH SMARTPHONE CAMERAS
    27.
    发明申请
    METHODS AND SYSTEMS FOR DEALING WITH PERSPECTIVE DISTORTION IN CONNECTION WITH SMARTPHONE CAMERAS 有权
    处理与SMARTPHONE CAMERAS相关的视觉障碍的方法和系统

    公开(公告)号：US20120218444A1

    公开(公告)日：2012-08-30

    申请号：US13088259

    申请日：2011-04-15

    Applicant: John Stach

    Inventor： John Stach

    IPC: H04N5/217

    CPC classification number: H04N5/23222 ,  G06T1/0021 ,  H04N5/23258 ,  H04N5/23293

    Abstract: Arrangements are detailed to aid a user in positioning a camera-equipped device (e.g., a smartphone) at a particular viewing position relative to an object being imaged. Other embodiments discern the device's viewing position, and then undertake image or other processing that is dependent on such viewpoint. A great number of other features and arrangements are also detailed.

    Abstract translation: 详细的安排是为了帮助用户将相机配备的设备（例如，智能电话机）定位在相对于被成像对象的特定观看位置。 其他实施例分辨设备的观看位置，然后进行取决于这种观点的图像或其他处理。 还详细介绍了许多其他功能和安排。

    Transforming data files into logical storage units for auxiliary data through reversible watermarks
    29.
    发明授权
    Transforming data files into logical storage units for auxiliary data through reversible watermarks 有权
    通过可逆水印将数据文件转换为辅助数据的逻辑存储单元

    公开(公告)号：US08059815B2

    公开(公告)日：2011-11-15

    申请号：US10435612

    申请日：2003-05-08

    Applicant: Neil E. Lofgren ,  Burt W. Perry ,  John Stach

    Inventor： Neil E. Lofgren ,  Burt W. Perry ,  John Stach

    IPC: H04N7/167

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

    Abstract: A reversible watermarking program transforms a host data file into a logical storage unit for auxiliary data files by embedding the auxiliary files in the data stored in the host data file. The reversible watermark modifies host data such as an image, audio, video, or software code, to carry auxiliary data. For perceptual content such as visual or audio media, the reversible watermark can maintain a desired level of perceptual quality, effectively hiding the auxiliary data in the host data. The reversible watermark enables the original host data prior to modifications due to the embedding to be restored.

    Abstract translation: 可逆水印程序通过将辅助文件嵌入存储在主机数据文件中的数据中，将主机数据文件转换为用于辅助数据文件的逻辑存储单元。 可逆水印修改诸如图像，音频，视频或软件代码的主机数据以携带辅助数据。 对于诸如视觉或音频媒体的感知内容，可逆水印可以保持期望的感知质量水平，有效地将辅助数据隐藏在主机数据中。 由于嵌入被恢复，可逆水印在修改之前使原始主机数据成为可能。

    Quantization-based data embedding in mapped data
    30.
    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：US08050452B2

    公开(公告)日：2011-11-01

    申请号：US12849726

    申请日：2010-08-03

    Applicant: Brett Alan Bradley ,  John Stach

    Inventor： Brett Alan Bradley ,  John Stach

    IPC: H04K1/00

    CPC classification number: G10L19/032 ,  G06T1/0064 ,  G06T2201/0061 ,  G06T2201/0601 ,  G10L19/018 ,  H04N1/32187 ,  H04N1/32197 ,  H04N1/3232

    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。

Patent Agency Ranking