System and Method for Fixed Point Continuation for Total Variation Based Compressed Sensing Imaging

    公开(公告)号:US20090141995A1

    公开(公告)日:2009-06-04

    申请号:US12259360

    申请日:2008-10-28

    IPC分类号: G06K9/46

    摘要: A method of compressed sensing imaging includes acquiring a sparse digital image b, said image comprising a plurality of intensities corresponding to an I-dimensional grid of points, initializing points (x(k), y(k)), wherein x(k) is an element of a first expanded image x defined by b=RΦ−1 x, wherein R is a Fourier transform matrix, Φ is a wavelet transform matrix, y(k) is a point in ∂ ( ∑ i = 1 l  ( ∇ i  Φ - 1  x ( k ) ) 2 ) 1 / 2 , ∇i is a forward finite difference operator for a ith coordinate, and k is an iteration counter; calculating a first auxiliary variable s(k) from x ( k ) - τ 1 ( αΦ  ∑ n  L n *  y n ( k ) + Φ   R * ( R   Φ - 1  x ( k ) - b ) ) , wherein τ1,α are predetermined positive scalar constants, the sum is over all points n in x, and L* is an adjoint of operator L=(∇1, . . . , ∇I); calculating a second auxiliary variable tn(k) from yn(k)+τ2LnΦ−1x(k), wherein τ2 is a predetermined positive scalar constant; updating x(k+1) from sign(s(k))max{0,|s(k)|−τ1β}, wherein β is a predetermined positive scalar constant; and updating yn(k+1) from min  { 1 τ 2 ,  t n ( k )  2 }  t n ( k )  t n ( k )  2 .

    Noise reduction in diffusion tensor imaging data using bayesian methods
    52.
    发明授权
    Noise reduction in diffusion tensor imaging data using bayesian methods 失效
    使用贝叶斯方法降低弥散张量成像数据

    公开(公告)号:US07355403B2

    公开(公告)日:2008-04-08

    申请号:US11268766

    申请日:2005-11-07

    申请人: Amit Chakraborty

    发明人: Amit Chakraborty

    IPC分类号: G01V3/00

    摘要: A method and computer program product for reducing noise in diffusion tensor imaging data utilizes an optimization function performed on voxels or pixels of the image. The optimization function includes a neighborhood relevance component that considers diffusion tensor matrices from neighboring pixels or voxels. The neighborhood relevance component is modeled as a Markov Random Field. The method includes an iteration that seeks convergence of an Expectation Maximization algorithm performed on the diffusion tensor matrices.

    摘要翻译: 用于减小扩散张量成像数据中的噪声的方法和计算机程序产品利用对图像的体素或像素执行的优化功能。 优化函数包括考虑来自相邻像素或体素的扩散张量矩阵的邻域相关性分量。 邻域相关性分量被建模为马尔可夫随机场。 该方法包括寻求在扩散张量矩阵上执行的期望最大化算法的收敛的迭代。

    SYSTEM AND METHOD FOR INTEGRATION OF MEDICAL INFORMATION
    53.
    发明申请
    SYSTEM AND METHOD FOR INTEGRATION OF MEDICAL INFORMATION 失效
    医疗信息整合的系统与方法

    公开(公告)号:US20060271556A1

    公开(公告)日:2006-11-30

    申请号:US11419789

    申请日:2006-05-23

    IPC分类号: G06F17/30

    CPC分类号: G06F19/321 G06F19/00

    摘要: A computer system for integrating medical information using the Unified Medical Language System (UMLS) as a taxonomy of medical terms includes a learner module for learning from training data concept classifiers for a source ontology and a target ontology, a mapper module for generating associations between source and target ontology classifiers using the UMLS, an annotator module for extracting knowledge from test data using source and target ontology classifiers and UMLS, and a feedback module for ranking associations according to a level or certainty, and presenting those associations that fall below a predefined level of certainty to a user for correction.

    摘要翻译: 使用统一医学语言系统(UMLS)作为医学术语分类的医学信息的计算机系统包括用于从源本体和目标本体的训练数据概念分类器学习的学习者模块,用于生成源之间的关联的映射器模块 以及使用UMLS的目标本体分类器,用于使用源和目标本体分类器和UMLS从测试数据提取知识的注释器模块,以及用于根据级别或确定性对关联进行排名的反馈模块,以及呈现低于预定级别的关联 确定用户进行校正。

    System and method for automatic molecular diagnosis of ALS based on boosting classification
    54.
    发明申请
    System and method for automatic molecular diagnosis of ALS based on boosting classification 失效
    基于增强分类的ALS自动分子诊断系统和方法

    公开(公告)号:US20060218109A1

    公开(公告)日:2006-09-28

    申请号:US11330535

    申请日:2006-01-12

    IPC分类号: G06N3/08

    摘要: A method for diagnosing Amyotrophic lateral sclerosis includes providing surface-enhanced laser desorption/ionisation mass spectrometric (SELDI-MS) data of a plurality of proteins, said data obtained from a patient and comprising a plurality of peak values, and analysing said peak values with an alternating decision tree comprising a set of tests of said data peaks values and associated prediction values, wherein said data is predictive of depression if a sum of the prediction values of said tree is greater than 1.0.

    摘要翻译: 用于诊断肌萎缩性侧索硬化症的方法包括提供多个蛋白质的表面增强激光解吸/电离质谱(SELDI-MS)数据,所述数据从患者获得并包括多个峰值,并且分析所述峰值与 交替决策树,其包括所述数据峰值和相关联的预测值的一组测试,其中如果所述树的预测值之和大于1.0,则所述数据预示着抑制。

    Integrated method for scene change detection
    55.
    发明授权
    Integrated method for scene change detection 有权
    场景变化检测的综合方法

    公开(公告)号:US07110454B1

    公开(公告)日:2006-09-19

    申请号:US09468653

    申请日:1999-12-21

    申请人: Amit Chakraborty

    发明人: Amit Chakraborty

    IPC分类号: H04B1/66 H04N5/14 G06K9/36

    CPC分类号: G06K9/00711 H04N5/147

    摘要: A system and method for detecting scene changes in a sequence of video frames utilizing a combination of a plurality of difference metrics including an interframe difference metric, a histogram difference metric and an interframe variance difference metric, as well as adaptive threshold level selection methods to dynamically select appropriate threshold levels for each of the difference metrics. The interframe and histogram difference metrics are used to identify abrupt scene changes and the interframe variance difference metric is used to identify gradual scene changes. The identified gradual and abrupt scene changes are validated by applying a plurality of conditions.

    摘要翻译: 一种系统和方法,用于利用多个不同度量的组合来检测视频帧序列中的场景变化,包括帧间差分度量,直方图差异量度和帧间方差差量度,以及自适应阈值电平选择方法,以动态地 为每个差异度量选择适当的阈值水平。 帧间和直方图差异量度用于识别突发场景变化,并使用帧间方差差值度量来标识逐渐的场景变化。 通过应用多个条件来验证所识别的逐渐和突然的场景变化。

    Method for querying XML documents using a weighted navigational index
    56.
    发明申请
    Method for querying XML documents using a weighted navigational index 有权
    使用加权导航索引查询XML文档的方法

    公开(公告)号:US20060167928A1

    公开(公告)日:2006-07-27

    申请号:US11204061

    申请日:2005-08-15

    IPC分类号: G06F17/00 G06F7/00

    摘要: A technique for optimizing the archival and management of data stored as XML documents is capable of handling mixed data including highly structured data and unstructured data. The technique maps the structured data to a relational database while storing the unstructured data in its native XML format. The data is updated using a rules database that maps updating rules against attributes and classes of elements within the documents. A document checking/validation engine performs the updates based on rule verification. A search engine searches the documents using both a path index table and a weighted content index.

    摘要翻译: 用于优化存储为XML文档的数据的归档和管理的技术能够处理包括高度结构化数据和非结构化数据的混合数据。 该技术将结构化数据映射到关系数据库,同时以非原生XML格式存储非结构化数据。 使用规则数据库更新数据,该数据库将更新规则与文档中元素的属性和类别进行映射。 文档检查/验证引擎基于规则验证来执行更新。 搜索引擎使用路径索引表和加权内容索引来搜索文档。

    Automated systems and methods to support electronic business transactions for spare parts
    57.
    发明申请
    Automated systems and methods to support electronic business transactions for spare parts 失效
    自动化系统和方法来支持备件的电子商务交易

    公开(公告)号:US20060167760A1

    公开(公告)日:2006-07-27

    申请号:US11216852

    申请日:2005-08-31

    IPC分类号: G06Q30/00

    摘要: Systems and methods are provided for implementing electronic business applications for managing and selling spare parts, wherein electronic catalogs of spare parts are used to present static and/or real-time spare parts data from disparate backend data sources in a uniform, integrated manner, and wherein business logic programs are provided to support transaction activities using the electronic catalogs of spare parts, such as navigating the catalog content, and retrieving static and/or real-time spare parts data and initiating spare parts sales with the backend business information systems and spare parts data sources.

    摘要翻译: 提供了用于实施用于管理和销售备件的电子商务应用的系统和方法,其中使用备件的电子目录以统一的,综合的方式呈现来自不同后端数据源的静态和/或实时备件数据,以及 其中提供业务逻辑程序以使用备件的电子目录来支持事务活动,例如浏览目录内容,以及检索静态和/或实时备件数据,并且利用后端业务信息系统和备用来启动备件销售 零件数据源。

    Method and apparatus for extracting anchorable information units from complex PDF documents
    60.
    发明授权
    Method and apparatus for extracting anchorable information units from complex PDF documents 失效
    从复杂PDF文档中提取可锚定信息单元的方法和装置

    公开(公告)号:US07013309B2

    公开(公告)日:2006-03-14

    申请号:US09996271

    申请日:2001-11-28

    IPC分类号: G06F16/30 G06F17/21

    摘要: A method for extracting Anchorable Information Units (AIUs), from a Portable Document Format (PDF) file, which may either be created using either an editor or by scanning in documents. The method includes parsing the portable document format document into textual portions and non-text portions, and extracting structure from the textual portions and the non-text portions. The method further includes determining text within textual portions, and text the non-text portions, and hyperlinking a plurality of keywords within the textual portions and non-text portions to a related document.

    摘要翻译: 一种从便携式文件格式(PDF)文件中提取安装信息单元(AIU)的方法,可以使用编辑器或通过文档扫描来创建。 该方法包括将便携式文档格式文档解析为文本部分和非文本部分,以及从文本部分和非文本部分提取结构。 该方法还包括确定文本部分内的文本,并且文本非文本部分,以及将文本部分和非文本部分内的多个关键字超链接到相关文档。