Patents by Inventor Brett A. Bradley

Brett A. Bradley has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20120208592
    Abstract: Arrangements involving portable devices (e.g., smartphones and tablet computers) are disclosed. One arrangement enables a content creator to select software with which that creator's content should be rendered—assuring continuity between artistic intention and delivery. Another utilizes a device camera to identify nearby subjects, and take actions based thereon. Others rely on near field chip (RFID) identification of objects, or on identification of audio streams (e.g., music, voice). Some technologies concern improvements to the user interfaces associated with such devices. Others involve use of these devices in connection with shopping, text entry, sign language interpretation, and vision-based discovery. Still other improvements are architectural in nature, e.g., relating to evidence-based state machines, and blackboard systems. Yet other technologies concern use of linked data in portable devices—some of which exploit GPU capabilities. Still other technologies concern computational photography.
    Type: Application
    Filed: November 17, 2011
    Publication date: August 16, 2012
    Inventors: Bruce L. Davis, Tony F. Rodriguez, Geoffrey G. Rhoads, William Y. Conwell, Jerrine K. Owen, Adnan M. Alattar, Eliot Rogers, Brett A. Bradley, Alastair M. Reed, Robert Craig Brandis
  • Patent number: 8233675
    Abstract: The present invention relates generally to pre-processing images, audio and/or video to improve biometric analysis from such. In one implementation, a method is provided including: receiving a color digital image including a representation of a human subject; converting the color digital image into grayscale values; transforming at least one representation of the converted color image; analyzing the transformed, converted color image to identify artifacts; if artifacts are found, processing the color digital image to reduce the artifacts; and providing the processed digital image to a biometric system. Other implementations are provided as well.
    Type: Grant
    Filed: June 20, 2007
    Date of Patent: July 31, 2012
    Assignee: L-1 Secure Credentialing, Inc.
    Inventors: Alastair M. Reed, Brett A. Bradley
  • Patent number: 8213674
    Abstract: The present disclosure relates generally to embedding auxiliary data and data hiding. One claim recites a method including: receiving data representing a media signal; using a programmed electronic processor, calculating perceptibility characteristics of the media signal, in which the perceptibility characteristics include contrast; using a programmed electronic processor, calculating a non-linear contrast to gain mapping using the perceptibility characteristics; using a programmed electronic processor, embedding an auxiliary signal in the media signal with reference to the non-linear contrast to gain mapping. Other claims and combinations are also provided.
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: July 3, 2012
    Assignee: Digimarc Corporation
    Inventors: Brett T. Hannigan, Alastair M. Reed, Brett A. Bradley
  • Publication number: 20120163666
    Abstract: Directional albedo of a particular article, such as an identity card, is measured and stored. When the article is later presented, it can be confirmed to be the same particular article by re-measuring the albedo function, and checking for correspondence against the earlier-stored data. The re-measuring can be performed through us of a handheld optical device, such as a camera-equipped cell phone. The albedo function can serve as random key data in a variety of cryptographic applications. The function can be changed during the life of the article. A variety of other features are also detailed.
    Type: Application
    Filed: February 27, 2012
    Publication date: June 28, 2012
    Inventors: Geoffrey B. Rhoads, Tony F. Rodriguez, Brett A. Bradley
  • Patent number: 8190901
    Abstract: A media object authentication system uses layers of security features based on digital watermarks embedded in media objects. The system generates a first digital watermark with a message payload carrying data about the object, such as a hash of text data printed on the object. The first digital watermark is combined with a content signature derived from features of the media object, such as frequency domain attributes, edge attributes, or other filtered version of the media signal (e.g., image photo on a secure document) on the media object. This combination forms a new digital watermark signal that is embedded in the host media object. Biometric information may also be embedded in a machine readable code in the object or indexed via the machine readable code. This biometric information is used to generate biometric templates, and facilitate or enhance biometric comparison for one to one or one to many verification.
    Type: Grant
    Filed: May 29, 2003
    Date of Patent: May 29, 2012
    Assignee: Digimarc Corporation
    Inventors: John Kennedy Barr, Brett A. Bradley, Brett T. Hannigan, Adnan M. Alattar, Robert Durst
  • Publication number: 20120129574
    Abstract: The present disclosure relates generally to signal detection adaptable to accommodate various lighting conditions, and to embedding signals according to anticipated lighting conditions likely to be present during image capture. One claim recites a method comprising: obtaining data representing imagery or video, the imagery or video having been captured with a camera; obtaining lighting information associated with image capture of the imagery or video; based on the lighting information, adapting a signal detection process; and using a programmed electronic processor, analyzing the data to determine whether a signal is encoded therein, said act of analyzing utilizes an adapted signal detection process. Of course, different combinations and claims are provided too.
    Type: Application
    Filed: June 21, 2011
    Publication date: May 24, 2012
    Inventors: Alastair M. Reed, Brett A. Bradley
  • Patent number: 8126203
    Abstract: Directional albedo of a particular article, such as an identity card, is measured and stored. When the article is later presented, it can be confirmed to be the same particular article by re-measuring the albedo function, and checking for correspondence against the earlier-stored data. The re-measuring can be performed through use of a handheld optical device, such as a camera-equipped cell phone. The albedo function can serve as random key data in a variety of cryptographic applications. The function can be changed during the life of the article. A variety of other features are also detailed.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: February 28, 2012
    Assignee: Digimarc Corporation
    Inventors: Geoffrey B. Rhoads, Tony F. Rodriguez, Brett A. Bradley
  • Patent number: 8095796
    Abstract: The present disclosure relates generally to content identification with so-called fingerprinting. One claim recites a method comprising: deriving fingerprint information corresponding to audio or video using a mobile user device; obtaining geographical location information associated with the mobile user device; communicating the fingerprint information and the geographical location information to a remotely located network service; and receiving a response from the remotely located service, the response being dependent on both the fingerprint information and the geographical location information. Of course, other claims and combinations are provided.
    Type: Grant
    Filed: November 27, 2007
    Date of Patent: January 10, 2012
    Assignee: Digimarc Corporation
    Inventors: William Y. Conwell, Brett A. Bradley, Geoffrey B. Rhoads
  • Patent number: 8094877
    Abstract: Variable message coding protocols enable greater flexibility in encoding auxiliary data in media signals. One such protocol employs a version identifier that indicates the type of coding used to process an auxiliary data message before it is embedded in a host media signal. This version identifier specifies the type of error robustness coding applied to a variable message. The error robustness coding may be varied to alter the message payload capacity for different versions of auxiliary data embedding and reading systems. Another protocol uses control symbols to specify the format and variable length of the variable message.
    Type: Grant
    Filed: August 17, 2010
    Date of Patent: January 10, 2012
    Assignee: Digimarc Corporation
    Inventors: Ravi K. Sharma, Geoffrey B. Rhoads, Brett A. Bradley
  • Publication number: 20110311096
    Abstract: Directional albedo of a particular article, such as an identity card, is measured and stored. When the article is later presented, it can be confirmed to be the same particular article by re-measuring the albedo function, and checking for correspondence against the earlier-stored data. The re-measuring can be performed through use of a handheld optical device, such as a camera-equipped cell phone. The albedo function can serve as random key data in a variety of cryptographic applications. The function can be changed during the life of the article. A variety of other features are also detailed.
    Type: Application
    Filed: May 24, 2011
    Publication date: December 22, 2011
    Inventors: Geoffrey B. Rhoads, Tony F. Rodriguez, Brett A. Bradley
  • Publication number: 20110150268
    Abstract: The present disclosure relates generally to embedding auxiliary data and data hiding. One claim recites a method including: receiving data representing a media signal; using a programmed electronic processor, calculating perceptibility characteristics of the media signal, in which the perceptibility characteristics include contrast; using a programmed electronic processor, calculating a non-linear contrast to gain mapping using the perceptibility characteristics; using a programmed electronic processor, embedding an auxiliary signal in the media signal with reference to the non-linear contrast to gain mapping. Other claims and combinations are also provided.
    Type: Application
    Filed: October 26, 2010
    Publication date: June 23, 2011
    Inventors: Brett T. Hannigan, Alastair M. Reed, Brett A. Bradley
  • Patent number: 7961949
    Abstract: The disclosure concerns content identification, such as extracting identifying information from content itself. One combination described in the disclosure is a method including: extracting first identifying information from data representing audio elements of an audio signal, the act of extracting first identifying information from data representing audio elements of the audio signal utilizes a programmed electronic processor; extracting second identifying information from data representing picture elements of a video signal that is associated with the audio signal, the act of extracting second identifying information from data representing picture elements of the video signal utilizes a programmed electronic processor; and utilizing the first identifying information or the second identifying information in a synchronization process, the synchronization process controls content synchronization during rendering of the audio signal or the video signal. Of course, other combinations are provided as well.
    Type: Grant
    Filed: October 12, 2009
    Date of Patent: June 14, 2011
    Assignee: Digimarc Corporation
    Inventors: Kenneth L. Levy, Brett T. Hannigan, Brett A. Bradley, Geoffrey B. Rhoads
  • Patent number: 7949148
    Abstract: Directional albedo of a particular article, such as an identity card, is measured and stored. When the article is later presented, it can be confirmed to be the same particular article by re-measuring the albedo function, and checking for correspondence against the earlier-stored data. The re-measuring can be performed through us of a handheld optical device, such as a camera-equipped cell phone. The albedo function can serve as random key data in a variety of cryptographic applications. The function can be changed during the life of the article. A variety of other features are also detailed.
    Type: Grant
    Filed: January 19, 2007
    Date of Patent: May 24, 2011
    Assignee: Digimarc Corporation
    Inventors: Geoffrey B. Rhoads, Tony F. Rodriguez, Brett A. Bradley
  • Publication number: 20110081041
    Abstract: Variable message coding protocols enable greater flexibility in encoding auxiliary data in media signals. One such protocol employs a version identifier that indicates the type of coding used to process an auxiliary data message before it is embedded in a host media signal. This version identifier specifies the type of error robustness coding applied to a variable message. The error robustness coding may be varied to alter the message payload capacity for different versions of auxiliary data embedding and reading systems. Another protocol uses control symbols to specify the format and variable length of the variable message.
    Type: Application
    Filed: August 17, 2010
    Publication date: April 7, 2011
    Inventors: Ravi K. Sharma, Geoffrey B. Rhoads, Brett A. Bradley
  • Publication number: 20100303283
    Abstract: A method computes signal characteristics of a host signal in which a digital signal is encoded, and analyzes the characteristics to determine an extent to which the signal characteristics correspond to characteristics of the digital signal. The method adapts parameters of a predictive filter or prediction function applied to the host signal based on the extent to which the signal characteristics correspond to the characteristics of the digital signal. In one embodiment, different filters or filter parameters are selected to match different signal characteristics of the host signal with the characteristics of the digital signal. These predictive filtering techniques also enable optimized encoding of digital signals that adapt the encoding of digital signals to take advantage of predictive filtering in the decoding process.
    Type: Application
    Filed: March 30, 2010
    Publication date: December 2, 2010
    Inventor: Brett A. Bradley
  • Patent number: 7778442
    Abstract: Variable message coding protocols enable greater flexibility in encoding auxiliary data in media signals. One such protocol employs a version identifier that indicates the type of coding used to process an auxiliary data message before it is embedded in a host media signal. This version identifier specifies the type of error robustness coding applied to a variable message. The error robustness coding may be varied to alter the message payload capacity for different versions of auxiliary data embedding and reading systems. Another protocol uses control symbols to specify the format and variable length of the variable message.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: August 17, 2010
    Assignee: Digimarc Corporation
    Inventors: Ravi K. Sharma, Geoffrey B. Rhoads, Brett A. Bradley
  • Patent number: 7769202
    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.
    Type: Grant
    Filed: May 20, 2008
    Date of Patent: August 3, 2010
    Assignee: Digimarc Corporation
    Inventors: Brett A. Bradley, John Stach
  • Patent number: 7688996
    Abstract: A watermarked signal is pre-filtered based on an analysis of signal characteristics that identify filter parameters that yield better correspondence between the filtered watermarked signal and the digital watermark. The watermark detection method computes signal characteristics of a host digitally watermarked signal, and analyzes the characteristics to determine an extent to which the signal characteristics correspond to characteristics of the digital watermark. The method adapts parameters of digital watermark prediction applied to the watermarked signal based on the extent to which the signal characteristics correspond to the characteristics of the digital watermark. In one embodiment, different filters or filter parameters are selected to match different signal characteristics of the watermarked signal with the characteristics of the digital watermark.
    Type: Grant
    Filed: June 12, 2007
    Date of Patent: March 30, 2010
    Assignee: Digimarc Corporation
    Inventor: Brett A. Bradley
  • Patent number: 7668334
    Abstract: The present invention relates to steganography and digital watermarking. In one implementation, we provide a method to analyze a digital image to determine whether the digital image will be a suitable host to receive steganographic encoding or digital watermarking. Suitability is determined, at least in part, by analyzing the digital image relative to an expected workflow process through which a watermarked version of the digital image is expected to flow through. Our methods and systems determine whether the digital image forms a suitable host to receive digital watermarking relative to the expected workflow process. If the digital image is not suitable, the digital image is modified to better receive digital watermarking in anticipation of the expected workflow process.
    Type: Grant
    Filed: June 1, 2005
    Date of Patent: February 23, 2010
    Inventors: Alastair M. Reed, Brett A. Bradley
  • Publication number: 20100042843
    Abstract: The presently claimed invention relates generally to digital watermarking of data, e.g., representing video or audio. One claim recites a method including: obtaining data representing video or audio; using a multi-purpose electronic processor programmed for: transforming the data into a transform domain, analyzing the transformed data to identify a plurality of transform coefficients according to predetermined criteria, and altering the identified plurality of transform coefficients to carry a digital watermark; and analyzing the data to determine a baseline state for the digital watermark. Of course, other combinations and claims are provided too.
    Type: Application
    Filed: October 20, 2009
    Publication date: February 18, 2010
    Inventors: Hugh L. Brunk, Brett A. Bradley, Brett T. Hannigan