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    MRA segmentation using active contour models
    1.
    发明授权
    MRA segmentation using active contour models 失效
    使用主动轮廓模型进行MRA分割

    公开(公告)号：US06718054B1

    公开(公告)日：2004-04-06

    申请号：US09602701

    申请日：2000-06-23

    申请人： Liana M. Lorigo ,  W. Eric L. Grimson ,  Olivier Faugeras ,  Renaud Keriven ,  Carl-Fredrik Westin ,  Ron Kikinis

    发明人： Liana M. Lorigo ,  W. Eric L. Grimson ,  Olivier Faugeras ,  Renaud Keriven ,  Carl-Fredrik Westin ,  Ron Kikinis

    IPC分类号： G06K900

    CPC分类号： G06K9/6207 ,  G06T7/12 ,  G06T7/149 ,  G06T2207/10088 ,  G06T2207/20161 ,  G06T2207/30101

    摘要： A method and system of providing segmentation of volumetric three-dimensional image data set such as MRA images. Initially, a three-dimensional MRA volume is input. An initial surface S is then generated by thresholding the input. A signed distance function v to S is then generated, where v=v(x,t) and S is the zero level set of v(·,0). The process proceeds by iteratively updating v according to v t = λ ⁢   ⁢ ( ∇ v ⁢   ⁢ ( x , t ) , ∇ 2 ⁢ v ⁢   ⁢ ( x , t ) ) + g ′ g ⁢   ⁢ ∇ v ⁢   ⁢ ( x , t ) · H ⁢   ⁢ ∇ I &LeftBracketingBar; ∇ I &RightBracketingBar; , the updating terminates at convergence or as determined by an operator. S′ is then defined to be the zero level set of the current distance function v′ and reinitialize v′ to be a distance function to S′. The volume is continually iteratively updated such that a final distance function v is obtained. The first output obtained from this volume is a segmentation of vessels in the MRA data, obtained by computing the zero level set of v.

    摘要翻译： 提供诸如MRA图像的体积三维图像数据集的分割的方法和系统。 最初，输入三维MRA音量。 然后通过对输入进行阈值来产生初始表面S. 然后生成带符号距离函数v到S，其中v = v（x，t），S是v（。，0）的零电平集合。 该过程通过根据更新在收敛处终止或由操作者确定来迭代地更新v来进行。 然后将S'定义为当前距离函数v'的零级集合，并将v'重新初始化为与S'的距离函数。 体积被不断迭代地更新，使得获得最终距离函数v。 从该体积获得的第一个输出是MRA数据中的血管的分割，通过计算v的零水平集获得。

    Method and apparatus for classifying and identifying images
    3.
    发明授权
    Method and apparatus for classifying and identifying images 失效
    用于分类和识别图像的方法和装置

    公开(公告)号：US5963670A

    公开(公告)日：1999-10-05

    申请号：US600378

    申请日：1996-02-12

    申请人： Pamela R. Lipson ,  W. Eric L. Grimson ,  Pawan Sinha ,  Tomaso Poggio

    发明人： Pamela R. Lipson ,  W. Eric L. Grimson ,  Pawan Sinha ,  Tomaso Poggio

    IPC分类号： G06F17/30 ,  G06K9/62

    CPC分类号： G06F17/30259 ,  G06F17/3025 ,  G06F17/30262 ,  G06K9/00684 ,  G06K9/6255

    摘要： An image processing system and methods of operation within such a system are disclosed. The image processing system utilizes a class model defined by one or more relative relationships between a plurality of image patches. The relative relationships describe the overall organization of images within an image class. The relative relationships are encoded in a global deformable template which can be used to classify or detect images. The class model may be predefined or generated by an image processing system.

    摘要翻译： 公开了一种在这种系统内的图像处理系统和操作方法。 图像处理系统利用由多个图像块之间的一个或多个相对关系定义的类模型。 相关关系描述了图像类中图像的整体组织。 相对关系被编码在可用于分类或检测图像的全局可变形模板中。 类模型可以由图像处理系统预定义或生成。

    Tracking systems and methods
    4.
    发明申请
    Tracking systems and methods 审中-公开
    跟踪系统和方法

    公开(公告)号：US20050073585A1

    公开(公告)日：2005-04-07

    申请号：US10944563

    申请日：2004-09-17

    申请人： Gil Ettinger ,  Matthew Antone ,  W. Eric L. Grimson

    发明人： Gil Ettinger ,  Matthew Antone ,  W. Eric L. Grimson

    IPC分类号： G06F20060101 ,  H04N7/18

    CPC分类号： H04N7/18

    摘要： Methods, systems, and computer program products for tracking an object(s), including identifying the object(s) by correlating video data from at least one video device, based on motion data of the object(s) for a previous time, determining that the object(s) movement is stopped, based on determining that the stopped object(s) is not occluded, monitoring the stopped object(s) properties, determining from the monitoring that the stopped object(s) is moving, and, resuming track of the object.

    摘要翻译： 用于跟踪对象的方法，系统和计算机程序产品，包括通过使来自至少一个视频设备的视频数据相关联来识别对象，基于前一时间的对象的运动数据，确定 基于确定停止的对象不被遮挡来监视对象运动，监视停止的对象属性，从监视确定停止的对象正在移动，并且恢复 对象的轨迹。

    Method and apparatus for classifying and identifying images
    5.
    发明授权
    Method and apparatus for classifying and identifying images 有权
    用于分类和识别图像的方法和装置

    公开(公告)号：US06549660B1

    公开(公告)日：2003-04-15

    申请号：US09270995

    申请日：1999-03-17

    申请人： Pamela R. Lipson ,  W. Eric L. Grimson ,  Pawan Sinha ,  Tomaso Poggio

    发明人： Pamela R. Lipson ,  W. Eric L. Grimson ,  Pawan Sinha ,  Tomaso Poggio

    IPC分类号： G06K962

    CPC分类号： G06F17/30259 ,  G06F17/3025 ,  G06F17/30262 ,  G06K9/00684 ,  G06K9/6255

    摘要： An image processing system for generating a class model from an image by identifying relative relationships between different properties of different image regions, includes a region partitioner a relationship processor, a template generator and an image detector. The image processing system utilizes a class model defined by one or more relative relationships between a plurality of image patches. The relative relationships describe the overall organization of images within an image class. The relative relationships are encoded in a global deformable template which can be used to classify or detect images. The class model may be pre-defined or generated by the image processing system. In one embodiment, the class model is generated from a low resolution image.

    摘要翻译： 一种用于通过识别不同图像区域的不同属性之间的相对关系从图像生成类模型的图像处理系统，包括关系处理器，模板生成器和图像检测器的区域分割器。 图像处理系统利用由多个图像块之间的一个或多个相对关系定义的类模型。 相关关系描述了图像类中图像的整体组织。 相对关系被编码在可用于分类或检测图像的全局可变形模板中。 类模型可以由图像处理系统预定义或生成。 在一个实施例中，从低分辨率图像生成类模型。

    System and method of registration of three-dimensional data sets including anatomical body data
    6.
    发明授权
    System and method of registration of three-dimensional data sets including anatomical body data 失效
    三维数据集的注册系统和方法，包括解剖体数据

    公开(公告)号：US5531520A

    公开(公告)日：1996-07-02

    申请号：US299378

    申请日：1994-09-01

    申请人： W. Eric L. Grimson ,  Steven J. White ,  Gil J. Ettinger ,  William M. Wells, III ,  Tomas Lozano-Perez ,  Ronald Kikinis

    发明人： W. Eric L. Grimson ,  Steven J. White ,  Gil J. Ettinger ,  William M. Wells, III ,  Tomas Lozano-Perez ,  Ronald Kikinis

    IPC分类号： G01B11/25 ,  G06F19/00 ,  G06T3/00 ,  G06K9/00

    CPC分类号： G06T3/0068 ,  A61B90/13 ,  G01B11/25 ,  G06F19/321 ,  A61B5/0064

    摘要： The present invention provides an image data registration system and method of storing a first data set of three-dimensional image data associated with a predetermined portion of an object with reference to a first coordinate frame; obtaining and storing a second data set of three-dimensional image data associated with a surface of the predetermined portion of the object with reference to a second coordinate frame; and registering the first data set and the second data set to generate a matched image data set in which the first coordinate frame is aligned with the second coordinate frame. In an alternative embodiment, the present invention provides a method of registering three-dimensional data sets, comprising generating a first data set of image data with reference to a first coordinate frame; generating a second data set of image data with reference to a second coordinate frame; selecting a predetermined subset of data points from the first data set; matching the subset of data points to all possible corresponding subsets of data points associated with the second data set and producing a set of hypothesized transformation data sets; and sequentially mapping said second data set to each of the hypothesized transformation data sets to form a solution data set, the solution data set representative of a highly accurate transformation of the second data into the first coordinate frame associated with the first data set.

    摘要翻译： 本发明提供了一种图像数据登记系统和方法，其参考第一坐标系存储与对象的预定部分相关联的三维图像数据的第一数据集; 参考第二坐标系获取并存储与对象的预定部分的表面相关联的三维图像数据的第二数据集; 以及登记第一数据组和第二数据组，以生成第一坐标系与第二坐标系对准的匹配图像数据组。 在替代实施例中，本发明提供了一种注册三维数据集的方法，包括参照第一坐标系生成图像数据的第一数据集; 参照第二坐标系生成图像数据的第二数据组; 从所述第一数据集中选择数据点的预定子集; 将数据点的子集匹配到与第二数据集相关联的数据点的所有可能的对应子集，并产生一组假设的变换数据集; 并且将所述第二数据集顺序映射到每个假设变换数据集合以形成解数据集，所述解数据集代表将所述第二数据高精度地变换为与所述第一数据集相关联的第一坐标系。