Local multi-scale fourier analysis for MRI
    1.
    发明授权
    Local multi-scale fourier analysis for MRI 有权
    MRI的局部多尺度傅立叶分析

    公开(公告)号:US06850062B2

    公开(公告)日:2005-02-01

    申请号:US10430295

    申请日:2003-05-07

    摘要: The present invention relates to a method for processing magnetic resonance signal data. magnetic resonance signal data in dependence upon a magnetic resonance signal time series are received. The magnetic resonance signal data are then transformed into a time-frequency Stockwell domain using a localizing time window having a frequency dependent window width in order to provide multi-resolution in the time-frequency domain. The Stockwell transformed magnetic resonance signal data are then processed in the Stockwell domain, for example, filtered based on time-frequency information of the Stockwell transformed magnetic resonance signal data. The processed Stockwell transformed magnetic resonance signal data are then transformed into Fourier domain by summing the Stockwell transformed magnetic resonance signal data over time indices of the Stockwell domain. In a further step the Fourier transformed magnetic resonance signal data are then transformed into time domain using inverse Fourier transformation. In another embodiment the method for processing magnetic resonance signals is extended for processing two-dimensional magnetic resonance signal image data in a space-frequency Stockwell domain. The method for processing magnetic resonance signals according to the invention using the Stockwell transform overcomes many limitations of the Fourier framework of existing magnetic resonance signal processing tools. It is highly advantageous by providing frequency and time/space information while keeping a close connection with the Fourier formalism, which allows implementation of the method according to the present invention into existing Fourier-based signal processing tools.

    摘要翻译: 本发明涉及一种处理磁共振信号数据的方法。 接收根据磁共振信号时间序列的磁共振信号数据。 然后使用具有频率依赖窗口宽度的定位时间窗将磁共振信号数据变换成时频斯托韦尔韦域,以便在时频域中提供多分辨率。 然后在Stockwell域中处理Stockwell变换的磁共振信号数据,例如,基于Stockwell变换的磁共振信号数据的时间 - 频率信息进行滤波。 然后将经处理的Stockwell变换的磁共振信号数据通过将Stockwell变换的磁共振信号数据随着Stockwell域的时间指数相加而被转换成傅立叶域。 在另一步骤中,傅里叶变换的磁共振信号数据然后使用傅立叶逆变换变换到时域。 在另一个实施例中,用于处理磁共振信号的方法被扩展用于处理空间频率的Stockwell域中的二维磁共振信号图像数据。 根据本发明使用Stockwell变换处理磁共振信号的方法克服了现有磁共振信号处理工具的傅立叶框架的许多限制。 通过提供频率和时间/空间信息来保持与傅里叶形式的密切联系是非常有利的,这允许根据本发明的方法实现到现有的基于傅里叶的信号处理工具中。

    Distributed vector processing of the S transform for medical applications
    2.
    发明授权
    Distributed vector processing of the S transform for medical applications 有权
    用于医疗应用的S变换的分布式矢量处理

    公开(公告)号:US07251379B2

    公开(公告)日:2007-07-31

    申请号:US10430294

    申请日:2003-05-07

    IPC分类号: G06K9/54

    摘要: The present invention relates to a method and system for distributed computing an S transform dataset of multidimensional image data of an object. The multidimensional image data are fast Fourier transformed into Fourier domain producing a Fourier spectrum. The respective Fourier frequencies are then partitioned into a plurality of portions of frequencies for simultaneously processing. Processing of each of the plurality of portions of the Fourier frequencies is assigned to a respective processor of a plurality of processors. The Fourier spectrum of multidimensional image data and each of the plurality of portions of the Fourier frequencies is transmitted to the respective processor. The portions of the Fourier frequencies are then simultaneously processed in order to produce the S transform dataset. The S transform data are then collected and stored. The method and system for computing the S transform according to the invention provides a substantially increased computation speed enabling use of the S transform for practical applications in a clinical setting.

    摘要翻译: 本发明涉及一种用于分布式计算物体的多维图像数据的S变换数据集的方法和系统。 多维图像数据被快速傅里叶变换成傅立叶域产生傅里叶谱。 然后将各个傅里叶频率分割成多个频率部分,以便同时处理。 将傅立叶频率的多个部分中的每一个的处理分配给多个处理器的相应处理器。 将多维图像数据和傅立叶频率的多个部分中的每一个的傅里叶谱发送到相应的处理器。 然后,对傅里叶频率的部分进行同时处理,以产生S变换数据集。 然后收集并存储S变换数据。 根据本发明的用于计算S变换的方法和系统提供了显着提高的计算速度,使得能够在临床设置中实际应用S变换。

    Stone fabrication system with hidden mortar joint
    3.
    发明授权
    Stone fabrication system with hidden mortar joint 有权
    石制造系统与隐形砂浆接头

    公开(公告)号:US09388571B2

    公开(公告)日:2016-07-12

    申请号:US12275486

    申请日:2008-11-21

    IPC分类号: E04B2/04 B44F9/04 E04B2/02

    摘要: A manufactured stone block for use in building a structure having a front surface with a simulated natural stone appearance. A portion of an upper surface of the block includes a recessed mortar joint for a user to place mortar therein to secure the manufactured stone block to an adjacent surface.

    摘要翻译: 一种制造的石块,用于建造具有模拟天然石外观的前表面的结构。 块的上表面的一部分包括用于使用者在其中放置砂浆的凹入的砂浆接头以将制造的石块固定到相邻的表面。

    Distinguishing search results associated with an electronic commerce system
    8.
    发明授权
    Distinguishing search results associated with an electronic commerce system 有权
    区分与电子商务系统相关联的搜索结果

    公开(公告)号:US08078497B1

    公开(公告)日:2011-12-13

    申请号:US11858096

    申请日:2007-09-19

    IPC分类号: G06Q30/00

    CPC分类号: G06Q30/06 G06Q30/0601

    摘要: A search engine communicates with a broker to identify search result content associated with merchants that support purchases through an electronic commerce system provided by the broker. The results of a search can include some content associated with merchants that support purchases through the broker, some content associated with merchants that do not support purchases through the broker, and some content not associated with any merchant. The search engine visually distinguishes content in the search results associated with merchants that support purchases through the broker by displaying a badge, such as a graphical icon, with the content. The search engine can use different types of badges to indicate different characteristics of the merchants.

    摘要翻译: 搜索引擎与经纪人通信以识别通过由经纪人提供的电子商务系统来支持购买的与商户相关联的搜索结果内容。 搜索结果可以包括与商家相关联的一些内容,其支持通过经纪人购买,与商户相关联的不支持通过经纪人购买的内容,以及一些与任何商家无关的内容。 搜索引擎通过显示诸如图形图标的徽章与内容,通过经纪人在视觉上区分与支持购买的商家相关联的搜索结果中的内容。 搜索引擎可以使用不同类型的徽章来表示商家的不同特征。

    Signal Processing with Fast S-Transforms
    10.
    发明申请
    Signal Processing with Fast S-Transforms 有权
    信号处理与快速S变换

    公开(公告)号:US20100191792A1

    公开(公告)日:2010-07-29

    申请号:US12482237

    申请日:2009-06-10

    IPC分类号: G06F17/14

    CPC分类号: G06F17/148

    摘要: The ability to examine the frequency content of a signal is critical in a variety of fields, and many techniques have been proposed to fill this need, including the Fourier and wavelet family of transforms. One of these, the S-transform, is a Fourier based transform that provides simultaneous time and frequency information similar to the wavelet transform but uses sinusoidal basis functions to produce true frequency and globally referenced phase measurements. It has been shown to be useful in several medical imaging applications but its use is limited due to high computational requirements of the original, continuous form. The described embodiments include a general framework for describing linear time-frequency transforms, using the Fourier, wavelet and S-transforms as examples. As an illustration of the utility of this formalism, a fast discrete S-transform algorithm is developed that has the same computational complexity as the fast Fourier transform.

    摘要翻译: 检查信号的频率内容的能力在各种领域中是至关重要的,并且已经提出了许多技术来满足这种需要,包括傅里叶变换和小波变换族。 其中之一,S变换是基于傅立叶的变换,其提供类似于小波变换的同时时间和频率信息,但是使用正弦基函数来产生真实的频率和全局参考相位测量。 已经显示在几种医学成像应用中是有用的,但是由于原始连续形式的高计算要求,其使用受到限制。 所描述的实施例包括用于描述线性时间 - 频率变换的一般框架,使用傅立叶,小波和S变换作为示例。 作为这种形式主义效用的一个例证,开发了具有与快速傅立叶变换相同计算复杂度的快速离散S变换算法。