公开(公告)号：US07519209B2

公开(公告)日：2009-04-14

申请号：US11165565

申请日：2005-06-23

申请人： Benoit M. Dawant ,  Zhujiang Cao

发明人： Benoit M. Dawant ,  Zhujiang Cao

IPC分类号： G06K9/00 ,  A61B6/00

CPC分类号： G06T7/149 ,  G06T7/12 ,  G06T2207/10081 ,  G06T2207/10088 ,  G06T2207/20104 ,  G06T2207/20161 ,  G06T2207/30056

摘要： A method for segmentation of an organ of a living subject with a variable shape and boundary and surrounded by structures and tissues in connection with an image containing the organ. In one embodiment, the method includes the steps of initializing a contour inside the organ in the image, introducing a speed function that is capable of accumulating spatial and temporal information of a propagating front of the contour, and evolving the contour toward the boundary of the organ using the introduced speed function so as to segment the organ.

摘要翻译： 一种用于分割具有可变形状和边界的活体的器官的方法，并且包括与包含器官的图像相关的结构和组织。 在一个实施例中，该方法包括以下步骤：初始化图像内的器官内的轮廓，引入能够累积轮廓的传播前沿的空间和时间信息的速度函数，以及向轮廓的边界发展轮廓 器官使用引入的速度功能以分割器官。

公开(公告)号：US20070165917A1

公开(公告)日：2007-07-19

申请号：US11287162

申请日：2005-11-26

申请人： Zhujiang Cao ,  Marek Brejl

发明人： Zhujiang Cao ,  Marek Brejl

IPC分类号： G06K9/00

CPC分类号： G06T7/60 ,  G06K9/4638 ,  G06K2209/05 ,  G06T7/0012 ,  G06T7/11 ,  G06T7/155 ,  G06T2207/10081 ,  G06T2207/20044 ,  G06T2207/30101

摘要： A system including a memory to store image data corresponding to a three dimensional (3D) reconstructed image, and a processor that includes an automatic vessel tree extraction module. The automatic vessel tree extraction module includes a load data module to access the stored image data, a component identification module to identify those components of the image data deemed likely to belong to a vessel, a characteristic path computation module to compute one or more characteristic paths for an identified component having a volume greater than a specified threshold volume value and discard an identified component having a volume less than the specified threshold volume value, and a connection module to connect the computed one or more characteristic paths of the identified component to a characteristic path of another identified component or to a common vessel source until the identified components are connected or discarded.

摘要翻译： 一种包括用于存储对应于三维（3D）重建图像的图像数据的存储器的系统，以及包括自动容器树提取模块的处理器。 自动容器树提取模块包括用于访问所存储的图像数据的负载数据模块，用于识别认为可能属于容器的图像数据的那些组件的组件识别模块，用于计算一个或多个特征路径的特征路径计算模块 对于具有大于指定阈值体积值的体积的识别组件，并且丢弃具有小于所述指定阈值体积值的体积的识别组件，以及连接模块，用于将所识别组件的所计算的一个或多个特征路径连接到特征 另一识别组件的路径或公共容器源，直到所识别的组件被连接或丢弃。

公开(公告)号：US20060013482A1

公开(公告)日：2006-01-19

申请号：US11165565

申请日：2005-06-23

申请人： Benoit Dawant ,  Zhujiang Cao

发明人： Benoit Dawant ,  Zhujiang Cao

IPC分类号： G06K9/34 ,  G06K9/00

CPC分类号： G06T7/149 ,  G06T7/12 ,  G06T2207/10081 ,  G06T2207/10088 ,  G06T2207/20104 ,  G06T2207/20161 ,  G06T2207/30056

摘要： A method for segmentation of an organ of a living subject with a variable shape and boundary and surrounded by structures and tissues in connection with an image containing the organ. In one embodiment, the method includes the steps of initializing a contour inside the organ in the image, introducing a speed function that is capable of accumulating spatial and temporal information of a propagating front of the contour, and evolving the contour toward the boundary of the organ using the introduced speed function so as to segment the organ.

公开(公告)号：US07590272B2

公开(公告)日：2009-09-15

申请号：US11287161

申请日：2005-11-23

申请人： Marek Brejl ,  Samuel W. Peterson ,  Zhujiang Cao

发明人： Marek Brejl ,  Samuel W. Peterson ,  Zhujiang Cao

IPC分类号： G06K9/00

CPC分类号： A61B5/4255 ,  A61B5/055 ,  A61B5/415 ,  A61B5/416 ,  A61B6/03 ,  G06T7/30 ,  G06T2207/30028

摘要： This document discusses, among other things, systems and methods for efficiently calculating a registration of multiple characteristic paths of a virtual three-dimensional object. Each path of discrete points is transformed into a piecewise linear parameterization as a function of path length. The paths are smoothed and normalized. The shorter path is partitioned into a number of discrete subintervals. The subintervals are mapped to the longer path using a minimization function that minimizes a cost function resulting in a locally optimal registration. The shorter path is incrementally positioned along the longer path and the minimization is attempted at each position. When the shorter path cannot be shifted any farther, the globally optimal registration is returned.

摘要翻译： 本文件尤其讨论了用于有效计算虚拟三维物体的多个特征路径的配准的系统和方法。 离散点的每个路径被转换成分段线性参数化作为路径长度的函数。 路径平滑和归一化。 较短的路径被划分成多个离散的子区间。 使用最小化功能将子间隔映射到更长的路径，从而最小化导致局部最优注册的成本函数。 较短的路径沿着更长的路径逐渐定位，并且在每个位置尝试最小化。 当较短的路径不能移动得更远时，返回全局最优注册。

公开(公告)号：US20070122016A1

公开(公告)日：2007-05-31

申请号：US11287161

申请日：2005-11-23

申请人： Marek Brejl ,  Samuel Peterson ,  Zhujiang Cao

发明人： Marek Brejl ,  Samuel Peterson ,  Zhujiang Cao

IPC分类号： G06K9/00

CPC分类号： A61B5/4255 ,  A61B5/055 ,  A61B5/415 ,  A61B5/416 ,  A61B6/03 ,  G06T7/30 ,  G06T2207/30028

摘要： This document discusses, among other things, systems and methods for efficiently calculating a registration of multiple characteristic paths of a virtual three-dimensional object. Each path of discrete points is transformed into a piecewise linear parameterization as a function of path length. The paths are smoothed and normalized. The shorter path is partitioned into a number of discrete subintervals. The subintervals are mapped to the longer path using a minimization function that minimizes a cost function resulting in a locally optimal registration. The shorter path is incrementally positioned along the longer path and the minimization is attempted at each position. When the shorter path cannot be shifted any farther, the globally optimal registration is returned.

摘要翻译： 本文件尤其讨论了用于有效计算虚拟三维物体的多个特征路径的配准的系统和方法。 离散点的每个路径被转换为分段线性参数化作为路径长度的函数。 路径平滑和归一化。 较短的路径被划分成多个离散的子区间。 使用最小化功能将子间隔映射到更长的路径，从而最小化导致局部最优注册的成本函数。 较短的路径沿着更长的路径逐渐定位，并且在每个位置尝试最小化。 当较短的路径不能移动得更远时，返回全局最优注册。