# Martin Vetterli, Grandvaux CH

## Martin Vetterli, Grandvaux CH

Patent application number | Description | Published |
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20080306745 | Distributed audio coding for wireless hearing aids - The aim of the invention is to provide inter-channel level differences ICLD related to audio signals for hearing aids. This aim is achieved by a method for computing ICLD from a first and second audio source signals, the first source signal being wired with a first processing module and the second source signal being wired with a second processing module, the second processing module receiving wirelessly information from the first processing module, this method comprising the steps of: acquiring first samples of the first sound signal by the first processing module, defining a first time frame, converting the first time frame into first frequency bands and grouping them into two first frequency sub-bands, calculating a first power estimate of each first frequency sub-bands, encoding and transmitting same to the second processing module, acquiring second samples of the second sound signal by the second processing module, | 12-11-2008 |

20090190689 | SPARSE SAMPLING OF SIGNAL INNOVATIONS - Signals, including signals from outside of the subspace of bandlimited signals associated with the Shannon theorem, are acquired while still providing an acceptable reconstruction. In some aspects a denoising process is used in conjunction with sparse sampling techniques. For example, a denoising process utilizing a Cadzow algorithm may be used to reduce the amount of noise associated with sampled information. In some aspects the denoising process may be iterative such that the denoising process is repeated until the samples are denoised to a sufficient degree. In some aspects, the denoising process converts a set of received samples into another set corresponding to a signal with a Finite Rate of Innovation (FRI), or to an approximation of such a signal. The disclosure relates in some aspects to combination of a denoising process with annihilating filter methods to retrieve information from a noisy, sparse sampled signal. The disclosure relates in some aspects to determining a sampling kernel to be used to sample the signal based on noise associated with the signal. The disclosure relates in some aspects to determining the number of samples to obtain from a signal over a period of time based on noise associated with the signal. The disclosure relates in some aspects to determining the finite number of innovations of a received signal. | 07-30-2009 |

20090191814 | SPARSE SAMPLING OF SIGNAL INNOVATIONS - Signals, including signals from outside of the subspace of bandlimited signals associated with the Shannon theorem, are acquired while still providing an acceptable reconstruction. In some aspects a denoising process is used in conjunction with sparse sampling techniques. For example, a denoising process utilizing a Cadzow algorithm may be used to reduce the amount of noise associated with sampled information. In some aspects the denoising process may be iterative such that the denoising process is repeated until the samples are denoised to a sufficient degree. In some aspects, the denoising process converts a set of received samples into another set corresponding to a signal with a Finite Rate of Innovation (FRI), or to an approximation of such a signal. The disclosure relates in some aspects to combination of a denoising process with annihilating filter methods to retrieve information from a noisy, sparse sampled signal. The disclosure relates in some aspects to determining a sampling kernel to be used to sample the signal based on noise associated with the signal. The disclosure relates in some aspects to determining the number of samples to obtain from a signal over a period of time based on noise associated with the signal. The disclosure relates in some aspects to determining the finite number of innovations of a received signal. | 07-30-2009 |

20090248425 | AUDIO WAVE FIELD ENCODING - An encoder/decoder for multi-channel audio data, and in particular for audio reproduction through wave field synthesis. The encoder comprises a two-dimensional filter-bank to the multi-channel signal, in which the channel index is treated as an independent variable as well as time, and and the resulting spectral coefficient are quantized according to a two-dimensional psychoacoustic model, including masking effect in the spatial frequency as well as in the temporal frequency. The coded spectral data are organized in a bitstream together with side information containing scale factors and Huffman codebook identifiers. | 10-01-2009 |

20100010351 | TIME OF FLIGHT ESTIMATION METHOD USING BEAMFORMING FOR ACOUSTIC TOMOGRAPHY - It is disclosed an acoustic tomography method to improve the time of flight estimation, said method comprising the steps of: sequentially triggering a set of N transmitters so as to generate a sequence of N acoustic waves through a volume being scanned; receiving each of said acoustic waves after transmission through said volume with a set of M receivers, which are called received signals; delaying by varying delays the N different said received signals that each receiver receives from the N different transmitters, and adding them together to form a new received signal, which is called transmit-beamformed signal for that receiver; delaying by varying delays the M different said transmit-beamformed signals for each receiver and adding them together at each receiver to form a new signal, which we call transmit-receive-beamformed signal. | 01-14-2010 |

20100042374 | SAMPLING METHOD, RECONSTRUCTION METHOD, AND DEVICE FOR SAMPLING AND/OR RECONSTRUCTING SIGNALS - Reconstruction method for reconstructing a first signal (x(t)) regularly sampled at a sub-Nyquist rate, comprising the step of retrieving from the regularly spaced sampled values (y | 02-18-2010 |

20100177906 | DISTRIBUTED SENSING OF SIGNALS LINKED BY SPARSE FILTERING - Certain aspects of the present disclosure provide methods for distributed sensing and centralized reconstruction of two correlated signals, modeled as the input and output of an unknown sparse filtering operation. | 07-15-2010 |

20100246729 | SAMPLING METHOD, RECONSTRUCTION METHOD, AND DEVICE FOR SAMPLING AND/OR RECONSTRUCTING SIGNALS - Reconstruction method for reconstructing a first signal (x(t)) regularly sampled at a sub-Nyquist rate, comprising the step of retrieving from the regularly spaced sampled values (y | 09-30-2010 |

20110096811 | Method and an apparatus for adaptively learning a sparse impulse response of a continuous channel - A method for adaptively learning a sparse impulse response ( | 04-28-2011 |

20110103500 | Methods and apparatus for estimating a sparse channel - Embodiments include a method for sending a selected number of pilots ( | 05-05-2011 |

20110121421 | IMAGE SENSOR HAVING NONLINEAR RESPONSE - In previously known imaging devices as in still and motion cameras, for example, image sensor signal response typically is linear as a function of intensity of incident light. Desirably, however, akin to the response of the human eye, response is sought to be nonlinear and, more particularly, essentially logarithmic. Preferred nonlinearity is realized in image sensor devices of the invention upon severely limiting the number of pixel states, combined with clustering of pixels into what may be termed as super-pixels. | 05-26-2011 |

20110146371 | METHOD FOR CALIBRATING A TRANSDUCER ARRAY - An iterative method for calibrating a transducer array characterized by calibration parameters, based on time delay measurements between transducer pairs, comprising the steps of: creating a distance data set that includes pairwise distances between estimated positions of transducer; forming a time delay measurement data set that includes time delay measurements between transducer pairs; generating from the time delay measurement data set an estimate of at least one calibration parameter; modifying the time delay measurement data set and the distance data set based on the estimated calibration parameters; denoising the modified distance data set with an iterative algorithm; updating the estimated positions of transducers based on the denoised modified distance data set; and repeating at least a portion of the steps until the difference between the estimated positions of transducer pairs and updated estimated positions of transducers satisfies a stopping criterion. | 06-23-2011 |

20110176019 | METHOD, APPARATUS AND SYSTEM FOR IMAGE ACQUISITION AND CONVERSION - A method for image acquisition and conversion includes low-pass filtering an image by an acquisition lens, producing from the low-pass filtered image, an up-sampled image with a first resolution with an up-sampling factor using a image sensor. The up-sampled image is converted into a multi-level image with a second resolution lower than the first resolution with an image processing circuit. The converting depends on the low-pass filtering of the lens and on the up-sampling factor. The method is adapted to gigapixel sensors and convention image sensors. | 07-21-2011 |

20120099435 | ESTIMATING SPARSE MIMO CHANNELS HAVING COMMON SUPPORT - According to a first aspect of the present invention there is provided a method of estimating, jointly, a set of multipath channels having a common path support, the method comprising the steps of, estimating jointly the common path support of the set of multipath channels using a spectral estimation technique, estimating path amplitudes, for each channel in the set of multipath channels, using the estimation of the common path support, to obtain an estimate of the set of multipath channels. | 04-26-2012 |

20120212507 | AUTOMATED ANNOTATION OF A VIEW - In a view, e.g. of scenery, of a shopping or museum display, or of a meeting or conference, automated processing can be used to annotate objects which are visible from a viewer position. Annotation can be of objects selected by the viewer, and can be displayed visually, for example, with or without an image of the view. | 08-23-2012 |

20120300089 | IMAGE ANNOTATION ON PORTABLE DEVICES - A system for automated annotation of images and videos points a mobile device towards an object of interest, such as a building or landscape scenery, for the device to display an image of the scene with an annotation for the object. An annotation can include names, historical information, and links to databases of images, videos, and audio files. Different techniques can be used for determining positional placement of annotations, and, by using multiple techniques, positioning can be made more precise and reliable. The level of detail of annotation information can be adjusted according to the precision of the techniques used. A trade-off can be taken into account between precision of annotation and communication cost, delay and/or power consumption. An annotation database can be updated in a self-organizing way. Public information as available on the web can be converted to annotation data. | 11-29-2012 |

20120307121 | Image Acquisition Using Oversampled One-Bit Poisson Statistics - In an image sensor pixels in an array of binary pixels are sampled with a first oversampling factor during a first frame interval, and then sampled with a second oversampling factor during a second frame interval, the second oversampling factor exceeding the first oversampling factor. | 12-06-2012 |

20130151191 | METHOD TO DETERMINE THE DISTRIBUTION OF TEMPERATURE SENSORS, METHOD TO ESTIMATE THE SPATIAL AND TEMPORAL THERMAL DISTRIBUTION AND APPARATUS - Apparatus comprising M sensors for measuring the temperature on M locations of the apparatus and an estimator configured to estimate a temperature vector of the apparatus with N temperature variables, whereby the estimator is configured to approximate the vector space of the temperature vector by K basis vectors and whereby the M temperature sensors are allocated on the apparatus on the basis of the K basis vectors. | 06-13-2013 |

20130243046 | FAST AND ROBUST ESTIMATION OF JOINTLY SPARSE CHANNELS - A device and method for estimating multipath jointly sparse channels. The method comprises receiving a number K of signal components by a number P of receiving antennas, where P≧2. The method further comprises estimating the sparsity condition of the multipath jointly sparse channels. The method further comprises, if the sparsity condition is not satisfied, estimating the channels by using a non-sparse technique. The method further comprises, if the sparsity condition is satisfied, estimating the channels by using a sparse technique. | 09-19-2013 |

20130311868 | COMPUTERIZED METHOD AND DEVICE FOR ANNOTATING AT LEAST ONE FEATURE OF AN IMAGE OF A VIEW - A computerized method for annotating at least one feature of an image of a view, includes the steps of obtaining the image with an image sensor of a portable device, and retrieving at least one condition. Based on the at least one condition, the method automatically selects a feature identification method among a plurality of features identification methods. It then applies the feature identification method for identifying the at least one feature, and annotates some of the identified features. | 11-21-2013 |

20140098191 | ANNOTATION METHOD AND APPARATUS - The present invention relates to an annotating method comprising the steps of: | 04-10-2014 |

20140129190 | METHOD, APPARATUS AND COMPUTER PROGRAM PRODUCT FOR LOCATING A SOURCE OF DIFFUSION IN A NETWORK - The present invention discloses a method, apparatus and computer program product for locating a source of diffusion in a network, the method comprising providing a model of at least a portion of the network, the network comprising a plurality of nodes, a plurality of edges, and at least one source of diffusion, providing a model of a diffusion process initiated by the at least one source during a time period of interest, and employing a source estimator to determine a location of a source of diffusion in at least a portion of the network based on a plurality of network model parameters characteristic for the at least a portion of the network, and a plurality of diffusion process model parameters characteristic for the provided model of a diffusion process. | 05-08-2014 |

20140180629 | METHOD AND A SYSTEM FOR DETERMINING THE GEOMETRY AND/OR THE LOCALIZATION OF AN OBJECT - A method for determining the geometry and/or the localisation of an object comprising the steps of: | 06-26-2014 |

20140274128 | INDOOR LOCALIZATION METHOD AND SYSTEM - An indoor localization method for estimating the location of nodes (n | 09-18-2014 |

20140354801 | METHOD, SYSTEM AND COMPUTER PROGRAM FOR DETERMINING A REFLECTANCE DISTRIBUTION FUNCTION OF AN OBJECT - The invention refers to a method for analysing reflected light of an object. First a light angle distribution for a point of the object is determined. Then a plenoptic projector is controlled to illuminate the point of the object with the determined light angle distribution. Then the reflected light intensity of the point of the object is measured and the measured reflected light is analysed in dependence of the determined light angle distribution. | 12-04-2014 |

20140369594 | METHOD AND APPARATUS FOR IDENTIFYING LOCAL FEATURES - A method of local feature identification, comprising the steps of: | 12-18-2014 |

20150074238 | METHOD FOR COMPRESSED SENSING OF STREAMING DATA AND APPARATUS FOR PERFORMING THE SAME - A computer-implemented method for sensing streaming data comprises recursively sampling an input stream of data using overlapping windowing to obtain at least one previous measurement regarding the input data stream, and employing the at least one previous measurement for obtaining a subsequent measurement. | 03-12-2015 |