公开(公告)号：US20080260247A1

公开(公告)日：2008-10-23

申请号：US11949832

申请日：2007-12-04

申请人： Leo Grady ,  Ali Kemal Sinop

发明人： Leo Grady ,  Ali Kemal Sinop

IPC分类号： G06K9/34

CPC分类号： G06K9/342 ,  G06K9/6224 ,  G06T7/11 ,  G06T2207/20101

摘要： A method for interactive image segmentation includes receiving an image to be segmented, performing an offline computation of eigenvectors of a Laplacian of the image without using seed points, receiving seed points, and performing an online segmentation taking the seed points and the eigenvectors of the Laplacian as input and outputting a partition of the image.

摘要翻译： 一种用于交互式图像分割的方法包括接收待分割的图像，对图像的拉普拉斯算子的特征向量进行离线计算，而不使用种子点，接收种子点，并执行在线分割，获取拉普拉斯算子的种子点和特征向量 作为输入并输出图像的分区。

公开(公告)号：US20080056577A1

公开(公告)日：2008-03-06

申请号：US11789747

申请日：2007-04-25

申请人： Leo Grady ,  Ali Kemal Sinop

发明人： Leo Grady ,  Ali Kemal Sinop

IPC分类号： G06K9/34

CPC分类号： G06K9/469 ,  G06K9/6224 ,  G06T7/11 ,  G06T7/143 ,  G06T7/162 ,  G06T2207/30101

摘要： A computer readable medium embodying instructions executable by a processor to perform a method for seeded image segmentation using l∞ minimization, the method including providing an image comprising a set of pixels, wherein a foreground seed label is given for at least one pixel of the image and a background seed label is given for at least another pixel of the image, determining an affinity function for every pair of neighbor pixels, solving the l∞ minimization, which assigns a probability to each pixel, labeling each pixel as foreground pixel or background pixel according to a threshold of the probability, and outputting the image including the segmentation labels.

摘要翻译： 一种计算机可读介质，其包含可由处理器执行的指令，以执行使用最小化的种子图像分割的方法，所述方法包括提供包括一组像素的图像，其中给出前景种子标签 为图像的至少另一像素给出图像的至少一个像素和背景种子标签，确定每对相邻像素的亲和度函数，求解最小化，其分配一个 每个像素的概率，根据概率的阈值将每个像素标记为前景像素或背景像素，并且输出包括分割标签的图像。

公开(公告)号：US20070086647A1

公开(公告)日：2007-04-19

申请号：US11511524

申请日：2006-08-28

申请人： Leo Grady

发明人： Leo Grady

IPC分类号： G06K9/00 ,  G06K9/34

CPC分类号： G06T7/162 ,  G06T7/12 ,  G06T2207/10081 ,  G06T2207/10108 ,  G06T2207/30004

摘要： A method for 3D volume segmentation in digitized medical images includes providing a digitized medical image defined on an N-dimensional lattice, obtaining an oriented closed 2-dimensional contour on one or more 2-dimensional slices from said image, defining face weights w from said image intensities by forming a dual lattice of said image lattice, minimizing summed over all faces subject to the constraint Bz=r wherein vector z is an indicator vector indicating whether a face is present in a minimum-weight surface, vector r is an indicator vector of said 2-D contour, and wherein B is an edge-face incidence matrix, and segmenting said 3-D image into distinct regions separated by the minimum-weight surface indicated by said vector z.

摘要翻译： 一种用于数字化医学图像中的3D体积分割的方法包括提供在N维格子上定义的数字化医学图像，从所述图像获得一个或多个二维切片上的定向闭合2维轮廓，从所述图像定义面部加权w 通过形成所述图像晶格的双晶格的图像强度，对受约束Bz = r的所有面进行最小化求和，其中矢量z是指示面部是否存在于最小权重表面中的指示矢量，向量r是指示矢量 的所述2-D轮廓，并且其中B是边缘面入射矩阵，并且将所述3-D图像分割成由所述向量z所指示的最小权重表面分隔的不同区域。

公开(公告)号：US20070047810A1

公开(公告)日：2007-03-01

申请号：US11472006

申请日：2006-06-21

申请人： Leo Grady

发明人： Leo Grady

IPC分类号： G06K9/00

CPC分类号： G06T7/162 ,  G06T7/11 ,  G06T2207/10072 ,  G06T2207/20016

摘要： A method for segmenting a digitized image includes providing a digitized image comprising a plurality of intensities corresponding to a domain of points on an N-dimensional grid, defining a weight between each pair of adjacent points in the image based on the intensity difference of each said point pair, marking a subset of points in said image wherein each marked point is marked with one of a plurality of labels, determining the probability that an unmarked point should be marked with one of said plurality of labels using a multigrid method that uses a restriction operator to map said provided image to a coarse-level gird, and a prolongation operator to map said coarse-level image back to a fine-level grid, wherein said restriction operator is an adjoint of said prolongation operator, and wherein a fine-level segmentation is a prolongation of a coarse level segmentation.

摘要翻译： 一种用于分割数字化图像的方法包括提供数字化图像，该数字化图像包括对应于N维网格上的点的区域的多个强度，基于每个所述图像的强度差定义图像中每对相邻点之间的权重 点对，标记所述图像中的点的子集，其中每个标记点用多个标签中的一个标记，使用使用限制的多网格方法确定未标记点应该用所述多个标签中的一个标记的概率 操作者将所述提供的图像映射到粗级网格，以及延长操作符，以将所述粗略级图像映射回精细级网格，其中所述限制操作符是所述延长操作符的伴随，并且其中精细级别 分割是粗略级别分割的延长。

公开(公告)号：US20070025616A1

公开(公告)日：2007-02-01

申请号：US11493315

申请日：2006-07-26

申请人： Leo Grady ,  Gareth Funka-Lea

发明人： Leo Grady ,  Gareth Funka-Lea

IPC分类号： G06K9/34

CPC分类号： G06K9/03 ,  G06K9/342 ,  G06T7/11 ,  G06T7/143 ,  G06T7/162 ,  G06T2207/10072 ,  G06T2207/20101 ,  G06T2207/30004

摘要： Presegmentation or prior, pre-existing segmentation of an object obtained through other means will be presented for interactive editing of a segmented object in an image or volume. Prior segmentation will be seamlessly combined with graph cuts or the random walker methods. Editing of the presegmentation is possible, while maintaining the important property of both methods that an arbitrary segmentation may be achieved with enough interaction.

摘要翻译： 将呈现通过其他方式获得的对象的预分割或先前存在的分割，用于图像或体积中的分段对象的交互式编辑。 先前的分割将与图形切割或随机Walker方法无缝结合。 编辑预分割是可能的，同时保持两种方法的重要性质，可以通过足够的交互实现任意分割。

公开(公告)号：US20060104513A1

公开(公告)日：2006-05-18

申请号：US11242549

申请日：2005-10-03

申请人： Shmuel Aharon ,  Leo Grady ,  Thomas Schiwietz

发明人： Shmuel Aharon ,  Leo Grady ,  Thomas Schiwietz

IPC分类号： G06K9/34

CPC分类号： G06T7/143 ,  G06T7/11 ,  G06T7/194 ,  G06T2207/10016 ,  G06T2207/20101

摘要： A method and system for segmenting an object in a digital image are disclosed. A user selects at least one foreground pixel or node located within the object and at least one background pixel or node located outside of the object. A random walk algorithm is performed to determine the boundaries of the object in the image. In a first step of the algorithm, a plurality of coefficients is determined. Next, a system of linear equations that include the plurality of coefficients are solved to determine a boundary of the object. The processing is performed by a graphics processing unit. The processing can be performed using the near-Euclidean LUV color space or a Lab color space. It is also preferred to use a Z-buffer in the graphics processing unit during processing. The object, once identified, can be further processed, for example, by being extracted from the image based on the determined boundary.

公开(公告)号：US20160328849A1

公开(公告)日：2016-11-10

申请号：US15213058

申请日：2016-07-18

申请人： Leo Grady ,  Ramaraj Ramamani Ramamani Ramaraj ,  Sarah Witzig Schlachter ,  Xuan-Lan Nguyen

发明人： Leo Grady ,  Ramaraj Ramamani Ramamani Ramaraj ,  Sarah Witzig Schlachter ,  Xuan-Lan Nguyen

IPC分类号： G06T7/00 ,  G06K9/00 ,  G02B21/36

CPC分类号： G06T7/0012 ,  G02B21/365 ,  G06K9/00147 ,  G06T2200/24 ,  G06T2207/10056 ,  G06T2207/30024 ,  G06T2207/30096

摘要： An automated method for detecting circulating tumor cells in a microscopic image of a blood sample includes receiving, by a computer, a plurality of low-resolution images, each low resolution image providing a representation of the blood sample with one of a plurality of stains applied. The computer determines a threshold value for each of the plurality of stains based on the low resolution images and identifies a list of potential cells based on the threshold values. A gating process is performed on the list of potential circulating tumor cells to identify one or more likely or highly likely circulating tumor cells. The computer presents the subset of the low-resolution images in a verification interface comprising one or more components allowing a user to confirm that a respective low-resolution image included in the subset of the low-resolution images includes one or more circulating tumor cells.

摘要翻译： 用于检测血液样本的微观图像中的循环肿瘤细胞的自动化方法包括通过计算机接收多个低分辨率图像，每个低分辨率图像提供血样的表示，其中施加多个污渍中的一个 。 计算机基于低分辨率图像确定多个染色中的每一个的阈值，并基于阈值识别潜在细胞的列表。 在潜在的循环肿瘤细胞列表上进行门控过程，以鉴定一个或多个可能或高度可能的循环肿瘤细胞。 计算机在包括一个或多个组件的验证接口中呈现低分辨率图像的子集，允许用户确认包括在低分辨率图像的子集中的相应低分辨率图像包括一个或多个循环肿瘤细胞。

公开(公告)号：US08478044B2

公开(公告)日：2013-07-02

申请号：US13155681

申请日：2011-06-08

申请人： Leo Grady ,  Noha Youssry El-Zehiry

发明人： Leo Grady ,  Noha Youssry El-Zehiry

IPC分类号： G06K9/34

CPC分类号： G06T7/162 ,  G06T7/11 ,  G06T2207/20101

摘要： A method for segmenting an object in a digital image includes computing, for each point vi in the image, weights wijk of a curvature clique vjvivk for each successive pair of edges eij, eik incident on point vi, decomposing each curvature clique into pairwise edge weights to form a new set of edges by adding, for all points vj, vk, an edge eij with weight wij, an edge eik with weight wik, and an edge ejk with weight wjk, where weight wij equals weight wik equals ½ wijk, and weight wjk equals −½ wijk, computing an indicator function of the points of the image indicative of whether each point belongs to an object of interest by minimizing a functional of the indicator function, and segmenting the object of interest from the image based on the value of the indicator function x at each image point.

摘要翻译： 用于分割数字图像中的对象的方法包括对于图像中的每个点vi计算针对入射到点vi上的每个连续的边eij，eik的曲率集合vjvivk的权重wijk，将每个曲率集合分解成成对边缘权重 通过向所有点vj，vk加上具有权重wij的边eij，具有权重wik的边eik和具有权重wjk的边ejk，其中权重wij等于权重wik等于½wijk，并且 权重wjk等于-1.5wijk，通过使指示符函数的功能最小化来计算指示每个点是否属于感兴趣对象的图像的指示符函数，并且基于该值从图像中分割感兴趣对象 指标函数x在每个图像点。

公开(公告)号：US20130088225A1

公开(公告)日：2013-04-11

申请号：US13615785

申请日：2012-09-14

申请人： Daniel Weller ,  Leo Grady ,  Lawrence Wald ,  Vivek K Goyal

发明人： Daniel Weller ,  Leo Grady ,  Lawrence Wald ,  Vivek K Goyal

IPC分类号： G01R33/341 ,  G01R33/58

CPC分类号： G01R33/5611

摘要： A system for parallel image processing in MR imaging comprises multiple MR imaging RF coils for individually receiving MR imaging data representing a slice of patient anatomy. An MR imaging system uses the multiple RF coils for acquiring corresponding multiple image data sets of the slice. An image data processor comprises at least one processing device conditioned for, deriving a first set of weights for generating a calibration data set comprising a subset of k-space data of composite image data representing the multiple image data sets. The at least one processing device uses the calibration data set in generating a first MR image data set, deriving a second set of weights using the calibration data set and the generated first MR image data set and uses the second set of weights in generating a second MR image data set representing a single image having a reduced set of data components relative to the first composite MR image data set.

摘要翻译： 用于MR成像中的并行图像处理的系统包括多个MR成像RF线圈，用于单独接收表示患者解剖结构的切片的MR成像数据。 MR成像系统使用多个RF线圈来获取切片的相应多个图像数据集。 图像数据处理器包括至少一个处理装置，该处理装置被调节为：产生第一组权重，用于生成包括表示多个图像数据集的合成图像数据的k空间数据的子集的校准数据集。 所述至少一个处理装置在生成第一MR图像数据集时使用校准数据集，使用校准数据集和所生成的第一MR图像数据集导出第二组权重，并使用第二组权重来产生第二个 MR图像数据集表示相对于第一复合MR图像数据集具有减少的数据分量集合的单个图像。

公开(公告)号：US20130046759A1

公开(公告)日：2013-02-21

申请号：US13209622

申请日：2011-08-15

申请人： Leo Grady ,  Mathäus Dejori

发明人： Leo Grady ,  Mathäus Dejori

IPC分类号： G06F17/30

CPC分类号： G06Q10/06 ,  G06Q10/10

摘要： A method for brokering information includes receiving an initiator produced system activity, scoring a relevance of the system activity with each of a plurality of subscriber-specified thresholds, and transmitting an activity response to a subscriber activity feed in response to the system activity, the subscriber activity feed selected according to the relevance of a corresponding subscriber-specified threshold.

摘要翻译： 用于经纪信息的方法包括接收发起者产生的系统活动，评估系统活动与多​​个用户指定阈值中的每一个的相关性，以及响应于系统活动向用户活动馈送发送活动响应，订户 根据相应的用户指定的阈值的相关性选择活动馈送。