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1. 发明公开

EP3088912A1 ULTRASOUND IMAGING SYSTEM AND METHOD FOR REPRESENTING RF SIGNALS THEREIN 审中-公开
标题翻译： VERFAHREN ZUR DARSTELLUNG VON HF-SIGNALEN DARIN超声波清洁剂
公开(公告)号：EP3088912A1
公开(公告)日：2016-11-02
申请号：EP15166098.2
申请日：2015-04-30
申请人： iMinds , VRIJE UNIVERSITEIT BRUSSEL
发明人： Dooms, Ann , Schelkens, Peter , Schretter, Colas , Bundervoet, Shaun
IPC分类号： G01S7/52 , G01S15/89
CPC分类号： G01S7/52025 , G01S7/52034 , G01S15/8915
摘要： The present invention relates to a method for determining a representation of multichannel radiofrequency, RF, signals acquired from a physical environment, which comprises a transmitter comprising one or more transmitting elements for emitting ultrasound excitation pressure waves, a propagation medium containing non-uniformities reflecting the pressure waves and a receiver comprising one or more elements for recording the multichannel RF signals from the reflected pressure waves. The method comprises
- determining a set of basis functions for representing the received reflected signals by deriving a model, whereby deriving said model comprises
* modelling the transmitter as one or more transmitting elements and the receiver as one or more receiving elements,
* modelling the propagation medium bounded by said transmitter and said receiver,
* modelling individual responses of the non-uniformities to said excitation pressure waves,
* deriving the set of basis functions from said individual responses by simulating response to excitation of the non-uniformities in the propagation medium,

- determining a representation of the recorded multichannel RF signals using the set of basis functions obtained with the model.
摘要翻译：本发明涉及一种用于确定从物理环境获取的多信道射频，RF信号的表示的方法，该方法包括：发射机，包括用于发射超声激发压力波的一个或多个发射元件，包含反映压力波和包括用于从反射的压力波记录多声道RF信号的一个或多个元件的接收器。该方法包括：通过导出模型来确定用于表示所接收的反射信号的一组基函数，由此导出所述模型包括将所述发射机建模为一个或多个发射元件，并将所述接收机建模为一个或多个接收元件，*建模所述传播由所述发射器和所述接收器限定的介质，*对所述激励压力波的不均匀性的各个响应建模，*通过模拟对传播介质中的非均匀性的激励的响应从所述各个响应导出一组基函数， - 使用利用模型获得的一组基函数来确定所记录的多信道RF信号的表示。

2. 发明公开

EP2808829A1 Method and apparatus for predicting the perceptual quality of a signal 审中-公开
标题翻译： Verfahren und Vorrichtung zur Vorhersage derWahrnehmungsqualitäteines信号
公开(公告)号：EP2808829A1
公开(公告)日：2014-12-03
申请号：EP13169527.2
申请日：2013-05-28
申请人： VRIJE UNIVERSITEIT BRUSSEL , iMinds VZW
发明人： Barri, Adriaan , Dooms, Ann , Jansen, Bart , Schelkens, Peter
IPC分类号： G06K9/62
CPC分类号： G06K9/6292
摘要： There is provided a method for predicting the perceptual quality of a signal (310). The method comprises inter alia subjecting the signal (310) to a plurality of objective quality measurement algorithms, and forming a plurality of normalized weighted sums (330a-e) based on the output (320a-c) of the objective quality measurement algorithms. The weights used to form the normalized weighted sums (330a-e) are such that each of the normalized weighted sums (330a-e) gives an optimal prediction of the perceptual quality of signals for an associated target value. The normalized weighted sums (330a-e) are then weighted based on their distances to their associated target values. The method provides an improved prediction accuracy of the perceptual quality.
摘要翻译：提供了一种用于预测信号（310）的感知质量的方法。该方法包括对信号（310）进行多个客观质量测量算法，并且基于目标质量测量算法的输出（320a-c）形成多个归一化加权和（330a-e）。用于形成归一化加权和（330a-e）的权重使得归一化加权和（330a-e）中的每一个给出关于相关联的目标值的信号的感知质量的最佳预测。然后，归一化加权和（330a-e）基于它们与其相关联的目标值的距离进行加权。该方法提供了感知质量的改进的预测精度。

3. 发明公开

EP1294196A3 Method and apparatus for subband encoding and decoding 审中-公开
标题翻译：为子带的编码和解码方法和设备
公开(公告)号：EP1294196A3
公开(公告)日：2004-10-27
申请号：EP02447165.8
申请日：2002-09-03
申请人： INTERUNIVERSITAIR MICROELEKTRONICA CENTRUM VZW , VRIJE UNIVERSITEIT BRUSSEL
发明人： Van Den Auwera, Geert , Schelkens, Peter , Cornelis, Jan , Munteanu, Adrian , Andreopoulos, Loannis
IPC分类号： H04N7/26
CPC分类号： H04N19/635 , H04N19/619 , H04N19/63
摘要： The present invention provides methods and apparatus for coding and/or encoding a bit stream comprising a representation of a sequence of n-dimensional data structures or matrices, in which n is typically 2. A part of the data of one data structure of the sequence can be mappable within predefined similarity critreria to a part of the data of a another data structure of the sequence. The similarity criteria may include, for instance, a spatial or temporal shift of the data within an image of a video signal such as is used in motion estimation and/or compensation of moving pictures, e.g. video images as well as coders and encoders for coding such a bitstream, e.g. a video signal for use in motion compensation and/or estimation. The data structures are typically video frames and a part of the data structure may be a block of data within a frame. The shift may be any suitable shift such as a linear translation at any suitable angle, a rotation of the data or change of size such as zooming between a part of the data in one data structure and a part of the data in another data structure of the sequence. The data structures are typically sequential frames of a video information stream. Digital filtering methods and apparatus are provided for application to a reference or other frame of data to generate one or more subbands of a set of subbands of an overcomplete representation of the frame by calculations at single rate. These filters may be implemented as a separate filter module or may be implemented as software running on a microprocessor, for example.

4. 发明公开

EP1294196A2 Method and apparatus for subband encoding and decoding 审中-公开
标题翻译： Verfahren und Vorrichtung zur Teilbandkodierung und -dekodierung
公开(公告)号：EP1294196A2
公开(公告)日：2003-03-19
申请号：EP02447165.8
申请日：2002-09-03
申请人： INTERUNIVERSITAIR MICROELEKTRONICA CENTRUM VZW , VRIJE UNIVERSITEIT BRUSSEL
发明人： Van Den Auwera, Geert , Schelkens, Peter , Cornelis, Jan , Munteanu, Adrian , Andreopoulos, Loannis
IPC分类号： H04N7/26
CPC分类号： H04N19/635 , H04N19/619 , H04N19/63
摘要： The present invention provides methods and apparatus for coding and/or encoding a bit stream comprising a representation of a sequence of n-dimensional data structures or matrices, in which n is typically 2. A part of the data of one data structure of the sequence can be mappable within predefined similarity critreria to a part of the data of a another data structure of the sequence. The similarity criteria may include, for instance, a spatial or temporal shift of the data within an image of a video signal such as is used in motion estimation and/or compensation of moving pictures, e.g. video images as well as coders and encoders for coding such a bitstream, e.g. a video signal for use in motion compensation and/or estimation. The data structures are typically video frames and a part of the data structure may be a block of data within a frame. The shift may be any suitable shift such as a linear translation at any suitable angle, a rotation of the data or change of size such as zooming between a part of the data in one data structure and a part of the data in another data structure of the sequence. The data structures are typically sequential frames of a video information stream.
Digital filtering methods and apparatus are provided for application to a reference or other frame of data to generate one or more subbands of a set of subbands of an overcomplete representation of the frame by calculations at single rate. These filters may be implemented as a separate filter module or may be implemented as software running on a microprocessor, for example.
摘要翻译：本发明提供了用于编码和/或编码比特流的方法和装置，其包括n维数据结构或矩阵的序列的表示，其中n通常为2。序列的一个数据结构的数据的一部分可以在预定义的相似性critreria内映射到序列的另一数据结构的数据的一部分。相似性标准可以包括例如视频信号的图像内的数据的空间或时间偏移，例如用于运动估计和/或补偿运动图像的视频信号的图像。视频图像以及用于对这样的比特流进行编码的编码器和编码器。用于运动补偿和/或估计的视频信号。数据结构通常是视频帧，并且数据结构的一部分可以是帧内的数据块。移位可以是任何合适的移位，例如以任何合适的角度的线性平移，数据的旋转或尺寸的变化，例如在一个数据结构中的数据的一部分之间的缩放和另一个数据结构中的数据的一部分序列。数据结构通常是视频信息流的连续帧。数字滤波方法和装置被提供用于应用于参考数据或其他数据帧，以通过以单速率的计算来生成帧的过度完整表示的一组子带的一个或多个子带。这些滤波器可以被实现为单独的滤波器模块，或者可以被实现为例如在微处理器上运行的软件。

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