Patent application number | Description | Published |
20090022360 | Quantization-Based Data Embedding in Mapped Data - 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. | 01-22-2009 |
20090060264 | Variable Message Coding Protocols for Encoding Auxiliary Data in Media Signals - 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. | 03-05-2009 |
20090080694 | Deriving Multiple Identifiers from Multimedia Content - The presently claimed invention relates generally to content identification, such as deriving identifiers from content itself. One claim recites a method including: using a processor, deriving first information from audio elements of an audio signal; using a processor, deriving second information from data representing picture elements of a video signal that is associated with the audio signal; and utilizing the first information or the second information in a content filtering process, said process utilizes a recognition unit or device to sample content being distributed on a network, and controls further distribution of the content in the network based at least in part on the first information or the second information. Of course, other combinations and claims are provided as well. | 03-26-2009 |
20100027837 | Extracting Multiple Identifiers from Audio and Video Content - The presently claimed invention relates generally to content identification, such as extracting identifying information from content itself. One claim recites a method including: extracting first identifying information from data representing audio elements of an audio signal, said 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, said 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, said synchronization process controls content synchronization during rendering of the audio signal or the video signal. Of course, other combinations and claims are provided as well. | 02-04-2010 |
20100042843 | Benchmarks for Digital Watermarking - 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. | 02-18-2010 |
20100303283 | ADAPTIVE PREDICTION FILTERING FOR ENCODING/DECODING DIGITAL SIGNALS IN MEDIA CONTENT - 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. | 12-02-2010 |
20110081041 | Variable Message Coding Protocols For Encoding Auxiliary Data in Media Signals - 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. | 04-07-2011 |
20110150268 | Perceptual Modeling of Media Signals for Data Hiding - 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. | 06-23-2011 |
20110311096 | Object Processing Employing Movement - 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. | 12-22-2011 |
20120129574 | Detecting Encoded Signals Under Adverse Lighting Conditions Using Adaptive Signal Detection - 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. | 05-24-2012 |
20120163666 | Object Processing Employing Movement - 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. | 06-28-2012 |
20120208592 | Smartphone-Based Methods and Systems - 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. A great variety of other features and arrangements are also detailed. | 08-16-2012 |
20120281880 | Sensing Data from Physical Objects - 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. | 11-08-2012 |
20130183952 | Smartphone-Based Methods and Systems - 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. A great variety of other features and arrangements are also detailed. | 07-18-2013 |
20130316728 | POSITIONING SYSTEMS FOR WIRELESS NETWORKS - The invention provides a method of computing positioning of a mobile device in a wireless network. This positioning method receives associated pings exchanged among a network of nodes. The pings include count stamps of ping transmit and receipt, and a count stamp of a message received by the network nodes from the mobile device. The method evaluates count stamps to determine clock differences among clocks of the network nodes. From the clock differences, the method determines pseudo ranges between the network nodes and the mobile device. The method determines location of the mobile device by evaluating the differences between ranges of candidate positions of the mobile device and the pseudo ranges. It minimizing a function of error associated with the position candidates to determine the mobile device's location. | 11-28-2013 |
20140108020 | MULTI-MODE AUDIO RECOGNITION AND AUXILIARY DATA ENCODING AND DECODING - Audio signal processing enhances audio watermark embedding and detecting processes. Audio signal processes include audio classification and adapting watermark embedding and detecting based on classification. Advances in audio watermark design include adaptive watermark signal structure data protocols, perceptual models, and insertion methods. Perceptual and robustness evaluation is integrated into audio watermark embedding to optimize audio quality relative the original signal, and to optimize robustness or data capacity. These methods are applied to audio segments in audio embedder and detector configurations to support real time operation. Feature extraction and matching are also used to adapt audio watermark embedding and detecting. | 04-17-2014 |
20140142958 | MULTI-MODE AUDIO RECOGNITION AND AUXILIARY DATA ENCODING AND DECODING - Audio signal processing enhances audio watermark embedding and detecting processes. Audio signal processes include audio classification and adapting watermark embedding and detecting based on classification. Advances in audio watermark design include adaptive watermark signal structure data protocols, perceptual models, and insertion methods. Perceptual and robustness evaluation is integrated into audio watermark embedding to optimize audio quality relative the original signal, and to optimize robustness or data capacity. These methods are applied to audio segments in audio embedder and detector configurations to support real time operation. Feature extraction and matching are also used to adapt audio watermark embedding and detecting. | 05-22-2014 |
20150071486 | SENSING DATA FROM PHYSICAL OBJECTS - 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. | 03-12-2015 |