公开(公告)号：US20110103500A1

公开(公告)日：2011-05-05

申请号：US12913687

申请日：2010-10-27

申请人： Martin Vetterli ,  Ali Hormati ,  Yann Barbotin

发明人： Martin Vetterli ,  Ali Hormati ,  Yann Barbotin

IPC分类号： H04L27/28

CPC分类号： H04L5/0051 ,  H04L25/0228 ,  H04L25/03987

摘要： Embodiments include a method for sending a selected number of pilots (20) to a sparse channel having a channel impulse response limited in time comprising sending the selected number of the pilots (20). The pilots (20) are equally spaced in the frequency domain the number is selected based on the finite rate of innovation of the channel impulse response. Once received the pilots (20), such a channel is estimated by: low-pass filtering (100) the received pilots, sampling (200) the filtered pilots with a rate below the Nyquist rate of the pilots, applying a FFT (300) on the sampled pilots, verifying (500) the level of noise of the transformed pilots, if the level of noise is below to a determined threshold, applying an annihilating filter method (600) to the transformed pilots, and dividing the temporal parameters by the distance (D) between two consecutive pilots.

摘要翻译： 实施例包括用于将选定数量的导频（20）发送到具有时间限制的信道脉冲响应的稀疏信道的方法，包括发送所选择的导频数量（20）。 导频（20）在频域中等间隔，其数量基于信道脉冲响应的有限创新速率来选择。 一旦接收到导频（20），这样的信道是通过以下方式估计的：对接收到的导频进行低通滤波（100），以低于导频的奈奎斯特速率的频率采样（200）经滤波的导频，应用FFT（300） 在采样导频上，如果噪声水平低于确定的阈值，验证（500）变换导频的噪声水平，对变换的导频应用湮灭滤波方法（600），并将时间参数除以 两个连续飞行员之间的距离（D）。

公开(公告)号：US20120099435A1

公开(公告)日：2012-04-26

申请号：US13277124

申请日：2011-10-19

申请人： Yann Barbotin ,  Ali Hormati ,  Sundeep Rangan ,  Martin Vetterli

发明人： Yann Barbotin ,  Ali Hormati ,  Sundeep Rangan ,  Martin Vetterli

IPC分类号： H04L12/26

CPC分类号： H04L1/0631 ,  H04B1/7105 ,  H04B1/7113 ,  H04J11/0063 ,  H04L25/0204 ,  H04L27/2647

摘要： 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.

摘要翻译： 根据本发明的第一方面，提供了一种共同估计具有公共路径支持的一组多路径信道的方法，所述方法包括以下步骤：使用以下步骤共同估计所述多路径信道集合的公共路径支持： 频谱估计技术，使用公共路径支持的估计来估计多径信道集合中的每个信道的路径振幅，以获得该多路径信道集合的估计。

公开(公告)号：US20100177906A1

公开(公告)日：2010-07-15

申请号：US12686183

申请日：2010-01-12

申请人： Martin Vetterli ,  Ali Hormati ,  Olivier Roy ,  Yue M. Lu

发明人： Martin Vetterli ,  Ali Hormati ,  Olivier Roy ,  Yue M. Lu

IPC分类号： G06F17/17 ,  H04L27/00 ,  H04R1/10 ,  G06F15/00 ,  G06F17/14

CPC分类号： G06K9/00536 ,  A61B5/0402 ,  A61B5/121 ,  A61B5/7257 ,  H04R25/407 ,  H04R25/552

摘要： 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.

摘要翻译： 本公开的某些方面提供了两种相关信号的分布式感测和集中重构的方法，其被建模为未知稀疏滤波操作的输入和输出。

公开(公告)号：US08574158B2

公开(公告)日：2013-11-05

申请号：US12502457

申请日：2009-07-14

申请人： Ivana Jovanovic ,  Ali Hormati ,  Oliver Roy ,  Martin Vetterli

发明人： Ivana Jovanovic ,  Ali Hormati ,  Oliver Roy ,  Martin Vetterli

IPC分类号： A61B8/00 ,  H04B1/02

CPC分类号： G01N29/0672 ,  A61B8/15 ,  G01S15/8913

摘要： 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.

摘要翻译： 公开了一种用于改善飞行时间估计的声学断层摄影方法，所述方法包括以下步骤：顺序地触发一组N个发射机，以便通过被扫描的体积产生N个声波的序列; 在通过所述容量传输之后接收每个所述声波，该组M个接收器称为接收信号; 通过改变延迟来延迟每个接收机从N个不同发射机接收的N个不同的所述接收信号，并将它们相加在一起以形成新的接收信号，这被称为用于该接收机的发射波束形成信号; 通过改变延迟来延迟每个接收机的M个不同的所述发送波束形成的信号，并将它们一起添加到每个接收机处以形成新的信号，这被称为发射接收波束形成的信号。

公开(公告)号：US20100010351A1

公开(公告)日：2010-01-14

申请号：US12502457

申请日：2009-07-14

申请人： Ivana Jovanovic ,  Ali Hormati ,  Oliver Roy ,  Martin Vetterli

发明人： Ivana Jovanovic ,  Ali Hormati ,  Oliver Roy ,  Martin Vetterli

IPC分类号： A61B8/14

CPC分类号： G01N29/0672 ,  A61B8/15 ,  G01S15/8913

摘要： 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.

摘要翻译： 公开了一种用于改善飞行时间估计的声学断层摄影方法，所述方法包括以下步骤：顺序地触发一组N个发射机，以便通过被扫描的体积产生N个声波的序列; 在通过所述容量传输之后接收每个所述声波，该组M个接收器称为接收信号; 通过改变延迟来延迟每个接收机从N个不同发射机接收的N个不同的所述接收信号，并将它们相加在一起以形成新的接收信号，这被称为用于该接收机的发射波束形成信号; 通过改变延迟来延迟每个接收机的M个不同的所述发送波束形成的信号，并将它们一起添加到每个接收机处以形成新的信号，这被称为发射接收波束形成的信号。

公开(公告)号：US08787501B2

公开(公告)日：2014-07-22

申请号：US12686183

申请日：2010-01-12

申请人： Martin Vetterli ,  Ali Hormati ,  Olivier Roy ,  Yue M. Lu

发明人： Martin Vetterli ,  Ali Hormati ,  Olivier Roy ,  Yue M. Lu

IPC分类号： H04L27/00 ,  A61B5/00 ,  G06K9/00 ,  A61B5/12 ,  H04R25/00 ,  A61B5/0402

CPC分类号： G06K9/00536 ,  A61B5/0402 ,  A61B5/121 ,  A61B5/7257 ,  H04R25/407 ,  H04R25/552

摘要： 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.

摘要翻译： 本公开的某些方面提供了两种相关信号的分布式感测和集中重构的方法，其被建模为未知稀疏滤波操作的输入和输出。

公开(公告)号：US08675021B2

公开(公告)日：2014-03-18

申请号：US12555841

申请日：2009-09-09

申请人： Emmanuel Reusens ,  Martin Vetterli ,  Serge Ayer ,  Victor Bergonzoli

发明人： Emmanuel Reusens ,  Martin Vetterli ,  Serge Ayer ,  Victor Bergonzoli

IPC分类号： G09G5/00 ,  H04N9/74

CPC分类号： H04N5/265 ,  G06T15/50 ,  H04N5/272

摘要： Given two video sequences, a composite video sequence can be generated (15) which includes visual elements from each of the given sequences, suitably synchronized (11) and represented in a chosen focal plane. A composite video sequence can be made also by similarly combining a video sequence with an audio sequence. In the composite video sequence, contestants, action figures or objects can be shown against a common background (12) even if the given video sequences differ as to background, with the common background taken from one or the other of the given sequences, for example. Alternatively, a different suitable background can be used, e.g. as derived from the given video sequences, as obtained from another video sequence or image, or as otherwise synthesized.

摘要翻译： 给定两个视频序列，可以生成复合视频序列（15），其包括来自给定序列中的每一个的可视元素，被适当地同步（11）并且在选择的焦平面中表示。 复合视频序列也可以通过类似地组合视频序列与音频序列来进行。 在复合视频序列中，即使给定的视频序列与背景不同，可以针对公共背景（12）显示参赛者，动作图或对象，其中从给定序列中的一个或另一个采取常见背景，例如 。 或者，可以使用不同的合适的背景，例如。 如从给定的视频序列导出的，从另一个视频序列或图像获得，或以其他方式合成。

公开(公告)号：US20110121421A1

公开(公告)日：2011-05-26

申请号：US12992235

申请日：2009-04-09

申请人： Edoardo Charbon ,  Luciano Sbaiz ,  Martin Vetterli ,  Sabine Susstrunk

发明人： Edoardo Charbon ,  Luciano Sbaiz ,  Martin Vetterli ,  Sabine Susstrunk

IPC分类号： H01L27/146

CPC分类号： H04N5/355 ,  H01L27/14627 ,  H01L27/14645 ,  H04N5/347

摘要： 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.

摘要翻译： 在诸如在静止摄像机和运动摄像机中的先前已知的成像装置中，例如，图像传感器信号响应通常作为入射光的强度的函数是线性的。 然而，理想地，类似于人眼的反应，反应被寻求为非线性的，更具体地，本质上是对数的。 在严格限制像素状态的数量，结合像素的聚类到被称为超像素的情况下，在本发明的图像传感器装置中实现优选的非线性。

公开(公告)号：US20090191814A1

公开(公告)日：2009-07-30

申请号：US12139117

申请日：2008-06-13

申请人： Thierry Blu ,  Martin Vetterli ,  Lionel Coulot

发明人： Thierry Blu ,  Martin Vetterli ,  Lionel Coulot

IPC分类号： H04B1/00

CPC分类号： H04L25/03006 ,  G06F17/10 ,  H03M1/0626 ,  H03M1/127 ,  H04B1/71637 ,  H04L27/2647

摘要： 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.

公开(公告)号：US20070143078A1

公开(公告)日：2007-06-21

申请号：US10680833

申请日：2003-10-07

申请人： Martin Vetterli ,  Pina Marziliano ,  Thierry Blu

发明人： Martin Vetterli ,  Pina Marziliano ,  Thierry Blu

IPC分类号： G06F15/00

CPC分类号： H04B1/707 ,  H03M1/1285 ,  H03M1/66 ,  H04B2201/70707

摘要： 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 (ys[n], y(nT)) a set of weights (cn, cnr, ck) and shifts (tn, tk) with which said first signal (x(t)) can be reconstructed. The reconstructed signal (x(t)) can be represented as a sequence of known functions (γ(t)) weighted by the weigths (ck) and shifted by the shifts (tk). The sampling rate is at least equal to the rate of innovation (ρ) of the first signal (x(t)).

摘要翻译： 一种用于重新构造以次奈奎斯特速率规则采样的第一信号（x（t））的重构方法，包括从规则间隔的采样值（y N s [n]，y（n T ））一组权重（c N，N，C，N，C，C），并且移位（t N n， 可以重构所述第一信号（x（t））。 重构信号（x（t））可以表示为由重量（c）k N加权并且移位了移位（t≠k）的已知函数（gamma（t））的序列 ）。 采样率至少等于第一个信号（x（t））的创新速率（rho）。