公开(公告)号：US06314192B1

公开(公告)日：2001-11-06

申请号：US09082632

申请日：1998-05-21

Applicant: Brian Chen ,  Gregory W. Wornell

Inventor： Brian Chen ,  Gregory W. Wornell

IPC: H04K100

CPC classification number: H04K1/00 ,  G06T1/0028 ,  G06T1/0071 ,  G06T2201/0202 ,  H04N1/32208 ,  H04N1/32229 ,  H04N1/32251 ,  H04N1/32288 ,  H04N1/32309

Abstract: A system, method, and product are provided to (1) embed a watermark signal into a host signal, thereby generating a composite signal, (2) optionally enable the composite signal to be transmitted over a communication channel, and (3) optionally extract the watermark signal from the transmitted composite signal. In one embodiment, the invention is a method for watermarking a host signal with a watermark signal. The watermark signal is made up of watermark-signal components, each having one of two or more watermark-signal values. The host signal is made up of host-signal components, each having one of two or more host-signal values. The method includes: (1) generating two or more embedding generators, each corresponding to a single watermark-signal value of a co-processed group of one or more watermark-signal components; (2) having each embedding generator generate two or more embedding values, the total of which is referred to as an original embedding-value set such that at least one embedding value generated by one embedding generator is different than any embedding value generated by another embedding generator; and (3) setting a host-signal value of one or more selected host-signal components to an embedding value of a particular embedding generator, thereby forming a composite-signal value, such that the particular embedding generator corresponds to the watermark-signal value of the co-processed group of watermark-signal components, and such that the embedding value of the particular embedding generator is selected based on its proximity to the host-signal value.

Abstract translation: 提供一种系统，方法和产品以（1）将水印信号嵌入到主机信号中，从而生成复合信号，（2）可选地使复合信号能够通过通信信道传输，以及（3）可选地提取 来自发送的复合信号的水印信号。 在一个实施例中，本发明是一种用水印信号对主机信号进行水印的方法。 水印信号由水印信号分量组成，每个水印信号分量具有两个或更多个水印信号值之一。 主机信号由主机信号分量组成，每个主机信号分量具有两个或多个主机信号值之一。 该方法包括：（1）产生两个或更多个嵌入生成器，每个嵌入生成器对应于一个或多个水印信号分量的协处理组的单个水印信号值; （2）具有每个嵌入生成器生成两个或更多个嵌入值，其总共被称为原始嵌入值集合，使得由一个嵌入生成器生成的至少一个嵌入值不同于由另一个嵌入生成的任何嵌入值 发电机; 和（3）将一个或多个所选择的主机信号分量的主机信号值设置为特定嵌入发生器的嵌入值，从而形成复合信号值，使得特定嵌入发生器对应于水印信号值 并且使得基于其与主机信号值的接近度来选择特定嵌入式发生器的嵌入值。

公开(公告)号：US5930369A

公开(公告)日：1999-07-27

申请号：US926720

申请日：1997-09-10

Applicant: Ingemar J. Cox ,  Joseph J. Kilian ,  Talal G. Shamoon

Inventor： Ingemar J. Cox ,  Joseph J. Kilian ,  Talal G. Shamoon

IPC: H04N1/387 ,  G06F21/10 ,  G06T1/00 ,  G09C5/00 ,  G10L13/00 ,  G10L19/018 ,  G10L25/51 ,  H04H20/31 ,  H04N1/32 ,  H04N7/08 ,  H04N7/24 ,  H04N7/26 ,  H04N7/52 ,  H04L9/00

CPC classification number: H04H20/31 ,  G06T1/0028 ,  G06T1/005 ,  H04N1/32154 ,  H04N1/3216 ,  H04N1/32165 ,  H04N1/3217 ,  H04N1/32197 ,  H04N1/3232 ,  H04N19/00 ,  H04N21/23892 ,  H04N21/8358 ,  H04N7/08 ,  H04N7/24 ,  H04N7/52 ,  G06T2201/0052 ,  G06T2201/0063 ,  G06T2201/0065 ,  G06T2201/0202 ,  G11B20/00891 ,  G11B20/00913 ,  H04N19/39 ,  H04N2201/3233 ,  H04N2201/327

Abstract: Digital watermarking of audio, image, video or multimedia data is achieved by inserting the watermark into the perceptually significant components of a decomposition of the data in a manner so as to be visually imperceptible. In a preferred method, a frequency spectral image of the data, preferably a Fourier transform of the data, is obtained. A watermark is inserted into perceptually significant components of the frequency spectral image. The resultant watermarked spectral image is subjected to an inverse transform to produce watermarked data. The watermark is extracted from watermarked data by first comparing the watermarked data with the original data to obtain an extracted watermark. Then, the original watermark, original data and the extracted watermark are compared to generate a watermark which is analyzed for authenticity of the watermark.

Abstract translation: 音频，图像，视频或多媒体数据的数字水印通过将数字水印插入数据分解的感知有意义的组成部分中以使其在视觉上不被察觉的方式来实现。 在优选的方法中，获得数据的频谱图像，优选数据的傅里叶变换。 将水印插入到频谱图像的感知重要组件中。 对所得水印的光谱图像进行逆变换以产生水印数据。 通过首先将水印数据与原始数据进行比较，从水印数据中提取水印，以获得提取的水印。 然后，将原始水印，原始数据和提取的水印进行比较，生成水印的真实性。

公开(公告)号：US11810378B2

公开(公告)日：2023-11-07

申请号：US17683021

申请日：2022-02-28

Applicant: Digimarc Corporation

Inventor： Alastair M. Reed ,  Tomas Filler ,  Kristyn R. Falkenstern ,  Yang Bai

IPC: G06T7/90 ,  G06K19/06 ,  H04N1/32 ,  G06V10/56 ,  H04N1/60 ,  G06V30/224 ,  G06T1/00 ,  H04N1/62

CPC classification number: G06V30/224 ,  G06K19/06028 ,  G06T1/0021 ,  G06T1/0028 ,  G06T7/90 ,  G06V10/56 ,  H04N1/32251 ,  H04N1/32267 ,  H04N1/32309 ,  H04N1/6008 ,  H04N1/6013 ,  H04N1/622 ,  G06T2201/0051 ,  G06T2201/0202 ,  H04N1/628

Abstract: The present disclosure relates generally to data hiding for retail product packaging and other printed objects such as substrates. One embodiment embeds an information signal in a spot color for printing on various substrates. The spot color is screened, and overprinted with process color tint. The tint is modulated prior to overprinting with optimized signal tweaks. The optimization can include consideration of a detector spectral dependency (e.g., red and/or green illumination). Many other embodiments and combinations are described in the subject patent document.

公开(公告)号：US11715171B2

公开(公告)日：2023-08-01

申请号：US17157668

申请日：2021-01-25

Applicant: The Nielsen Company (US), LLC

Inventor： Venugopal Srinivasan

IPC: G06T1/00 ,  G10L19/018

CPC classification number: G06T1/0028 ,  G06T1/0071 ,  G10L19/018 ,  G06T2201/0202

Abstract: Methods, apparatus and articles of manufacture (e.g., computer readable media) to detect watermark modifications are disclosed. Example apparatus disclosed herein include means for encoding a first watermark in a first media signal obtained from an output of a media device to obtain a second media signal encoded with the first watermark and a second watermark, the second watermark already encoded in the first media signal obtained from the output of the media device. Disclosed example apparatus also include means for decoding the first watermark and the second watermark from the second media signal to determine a first metric corresponding to the first watermark and a second metric corresponding to the second watermark. Disclosed example apparatus further include means for outputting, based on the first metric and the second metric, an indication of whether the second watermark has been modified.

公开(公告)号：US20190043152A1

公开(公告)日：2019-02-07

申请号：US16158007

申请日：2018-10-11

Applicant: The Nielsen Company (US), LLC

Inventor： Venugopal Srinivasan

IPC: G06T1/00 ,  G10L19/018

CPC classification number: G06T1/0028 ,  G06T1/0071 ,  G06T2201/0202 ,  G10L19/018

Abstract: Example systems disclosed herein to detect watermark modifications include a watermark encoder to encode a second watermark in a sampled media signal obtained from a received broadcast signal, the sampled media signal already encoded with a first watermark that was included in the received broadcast signal. Disclosed example systems also include a watermark decoder to detect the first watermark and the second watermark in the sampled media signal, and a watermark modification evaluator to compare a first metric determined for the first watermark and a second metric determined for the second watermark to determine whether the first watermark was modified prior to being included in the received broadcast signal. Disclosed example systems further include a ratings server to revise ratings data corresponding to the received broadcast signal when the first watermark is determined to have been modified prior to being included in the received broadcast signal.

公开(公告)号：US20190012554A1

公开(公告)日：2019-01-10

申请号：US15865100

申请日：2018-01-08

Applicant: Digimarc Corporation

Inventor： Alastair M. Reed ,  Tomas Filler ,  Kristyn R. Falkenstern ,  Yang Bai

IPC: G06K9/18 ,  H04N1/32 ,  H04N1/60 ,  G06T1/00 ,  G06T7/90 ,  G06K9/46 ,  G06K19/06

CPC classification number: G06K9/18 ,  G06K9/4652 ,  G06K19/06028 ,  G06T1/0021 ,  G06T1/0028 ,  G06T7/90 ,  G06T2201/0051 ,  G06T2201/0202 ,  H04N1/32251 ,  H04N1/32267 ,  H04N1/32309 ,  H04N1/6008 ,  H04N1/6013 ,  H04N1/622 ,  H04N1/628

Abstract: The present disclosure relates generally to data hiding for retail product packaging and other printed objects such as substrates. One embodiment embeds an information signal in a spot color for printing on various substrates. The spot color is screened, and overprinted with process color tint. The tint is modulated prior to overprinting with optimized signal tweaks. The optimization can include consideration of a detector spectral dependency (e.g., red and/or green illumination). Many other embodiments and combinations are described in the subject patent document.

公开(公告)号：US09877036B2

公开(公告)日：2018-01-23

申请号：US14598135

申请日：2015-01-15

Applicant: GoPro, Inc.

Inventor： Balineedu Chowdary Adsumilli

IPC: H04N19/467 ,  H04N19/63 ,  H04N1/32 ,  G06T1/00

CPC classification number: H04N19/467 ,  G06T1/0028 ,  G06T2201/0052 ,  G06T2201/0083 ,  G06T2201/0202 ,  H04N1/32187 ,  H04N1/32277 ,  H04N1/32288 ,  H04N19/63

Abstract: Watermark data is converted to watermark coefficients, which may be embedded in an image by converting the image to a frequency domain, embedding the watermark in image coefficients corresponding to medium-frequency components, and converting the modified coefficients to the spatial domain. The watermark data is extracted from the modified image by converting the modified image to a frequency domain, extracting the watermark coefficients from the image coefficients, and determining the watermark data from the watermark coefficients. The watermark data may be truncated image data bits such as truncated least significant data bits. After extraction from the watermark, the truncated image data bits may be combined with data bits representing the original image to increase the bit depth of the image. Watermark data may include audio data portions corresponding to a video frame, reference frames temporally proximate to a video frame, high-frequency content, sensor calibration information, or other image data.

公开(公告)号：US20170318358A1

公开(公告)日：2017-11-02

申请号：US15653288

申请日：2017-07-18

Applicant: Sony Corporation

Inventor： Mark EYER

IPC: H04N21/8358 ,  H04N21/84 ,  H04N21/462 ,  H04N7/08 ,  H04N21/235 ,  G06T1/00 ,  H04N7/025 ,  H04N21/858 ,  H04N21/44

CPC classification number: H04N21/8358 ,  G06T1/0028 ,  G06T2200/28 ,  G06T2201/0051 ,  G06T2201/0065 ,  G06T2201/0202 ,  H04N7/025 ,  H04N7/08 ,  H04N21/235 ,  H04N21/44008 ,  H04N21/4622 ,  H04N21/84 ,  H04N21/8586

Abstract: A reception apparatus, method, and non-transitory computer-readable storage medium for processing an image in which a plurality of symbols is encoded. The reception apparatus includes circuitry configured to receive or retrieve an image in which one of a plurality of predetermined run-in patterns and a plurality of symbols is encoded using a set of luminance values, and determine which of the plurality of run-in patterns is encoded in the image. The circuitry is configured to determine a slice point used to determine data values of the plurality of symbols encoded in the image based on which of the plurality of predetermined run-in patterns is determined to be encoded in the image. Further, the circuitry is configured to determine the data values of the plurality of symbols encoded in the image based on the determined slice point.

公开(公告)号：US20170230533A1

公开(公告)日：2017-08-10

申请号：US15497042

申请日：2017-04-25

Applicant: Digimarc Corporation

Inventor： Vojtech Holub ,  Donald Haaga ,  Ravi K. Sharma

IPC: H04N1/32

CPC classification number: H04N1/32229 ,  G06T1/0028 ,  G06T1/005 ,  G06T2201/0051 ,  G06T2201/0061 ,  G06T2201/0065 ,  G06T2201/0202 ,  H04N1/32 ,  H04N1/32187 ,  H04N1/32224 ,  H04N1/32251 ,  H04N1/32261 ,  H04N1/3232 ,  H04N1/32352 ,  H04N19/124 ,  H04N19/467 ,  H04N2201/3233

Abstract: Sparse signal modulation schemes encode a data channel on a substrate in a manner that is robust, flexible to achieve perceptual quality constraints, and provides improved data capacity. The substrate is printed by any of a variety of means to apply the image, with sparse signal, to an object. After image capture of the object, a decoder processes the captured image to detect and extract data modulated into the sparse signal. The sparse signal may incorporate implicit or explicit synchronization components, which are either formed from the data signal or are complementary to it.

公开(公告)号：US09690967B1

公开(公告)日：2017-06-27

申请号：US15154572

申请日：2016-05-13

Applicant: Digimarc Corporation

Inventor： Trent J. Brundage ,  Vojtech Holub ,  David A. Cushman

IPC: G06F17/00 ,  G06K7/14 ,  G06T1/00 ,  G06K19/06 ,  G06K7/10

CPC classification number: G06T1/0028 ,  G06T1/0021 ,  G06T1/005 ,  G06T2201/0202

Abstract: This disclosure relates to advanced signal processing technology including steganographic embedding and digital watermarking. One combination disclosed in the description is an image processing apparatus including: electronic memory for storing an image, in which the image comprises at least a 1D or 2D barcode represented therein and a first encoded signal encoded therein, the 1D or 2D barcode comprising a first plural-bit code and the first encoded signal comprising a second plural-bit code; means for decoding the 1D or 2D barcode from the image to obtain the first plural-bit code; means for analyzing data representing the image to obtain the second plural-bit code from the first encoded signal; means for determining whether the second plural-bit code conflicts with the first plural-bit code; and means for generating a conflict map, the conflict map comprising an identification of a code conflict, and a spatial location of the code conflict relative to the image. Of course, other features and combinations are described as well.