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21. 发明申请

US20140037228A1 ZERO COMMUNICATION BLOCK PARTITIONING 审中-公开
标题翻译：零通讯块分割
公开(公告)号：US20140037228A1
公开(公告)日：2014-02-06
申请号：US13950535
申请日：2013-07-25
申请人： Alban Lefebvre , Axel Loewe , Mariappan S. Nadar , Jun Liu
发明人： Alban Lefebvre , Axel Loewe , Mariappan S. Nadar , Jun Liu
IPC分类号： G06T1/20
CPC分类号： G06T1/20 , G01R33/5608
摘要： A computer-implemented method for calculating a multi-dimensional wavelet transform in an image processing system comprising a plurality of computation units includes receiving multi-dimensional image data. An overlap value corresponding to a number of non-zero filter coefficients associated with the multi-dimensional wavelet transform is identified. Then the multi-dimensional image data is divided into a plurality of multi-dimensional arrays, wherein the multi-dimensional arrays overlap in each dimension by a number of pixels equal to the overlap value. A multi-dimensional wavelet transform is calculated for each multi-dimensional array, in parallel, across the plurality of computation units.
摘要翻译：一种用于在包括多个计算单元的图像处理系统中计算多维小波变换的计算机实现方法包括接收多维图像数据。识别与多维小波变换相关联的非零滤波器系数的数量对应的重叠值。然后，多维图像数据被分成多个多维阵列，其中多维阵列在每个维度上与等于重叠值的像素的数量重叠。在多个计算单元中并行计算每个多维阵列的多维小波变换。

22. 发明授权

US08582907B2 Method for reconstruction of magnetic resonance images 有权
标题翻译：磁共振图像重建方法
公开(公告)号：US08582907B2
公开(公告)日：2013-11-12
申请号：US12938572
申请日：2010-11-03
申请人： Ali Bilgin , Yookyung Kim , Mariappan S. Nadar
发明人： Ali Bilgin , Yookyung Kim , Mariappan S. Nadar
IPC分类号： G06K9/46 , H04N7/12
CPC分类号： G06T9/00
摘要： A method for constructing an image includes acquiring image data in a sensing domain, transforming the acquired image data into a sparse domain, approximating sparse coefficients based on the transformed acquired image data, performing a Bayes Least Squares estimation on the sparse coefficients based on Gaussian Scale Mixtures Model to generate weights, approximating updated sparse coefficients by using the weights and acquired image, constructing an image based on the updated sparse coefficients, and displaying the constructed image.
摘要翻译：一种用于构建图像的方法包括获取感测区域中的图像数据，将所获取的图像数据变换为稀疏域，基于变换获取的图像数据近似稀疏系数，对基于高斯标度的稀疏系数执行贝叶斯最小二乘估计混合模型产生权重，通过使用权重和获取的图像近似更新的稀疏系数，基于更新的稀疏系数构建图像，并显示构造的图像。

23. 发明申请

US20130113816A1 VISUALIZING BRAIN NETWORK CONNECTIVITY 有权
标题翻译：可视化大脑网络连接
公开(公告)号：US20130113816A1
公开(公告)日：2013-05-09
申请号：US13539863
申请日：2012-07-02
申请人： Sandra Sudarsky , Mariappan S. Nadar , Shanhui Sun , Alban Lefebvre , Bernhard Geiger
发明人： Sandra Sudarsky , Mariappan S. Nadar , Shanhui Sun , Alban Lefebvre , Bernhard Geiger
IPC分类号： G09G5/02 , G06T11/20
CPC分类号： G06T11/206 , A61B5/0042 , A61B5/4064
摘要： A method for visualizing brain connectivity includes receiving image data including molecular diffusion of brain tissue, constructing a tree data structure from the image data, wherein the tree data structure comprises a plurality of network nodes, wherein each network node is connected to a root of the tree data structure, rendering a ring of a radial layout depicting the tree data structure, wherein a plurality of vertices may be traversed from the top to the bottom, duplicating at least one control point for spline edges sharing a common ancestor, and bundling spline edges by applying a global strength parameter β.
摘要翻译：用于可视化脑连通性的方法包括接收包括脑组织的分子扩散的图像数据，从图像数据构建树数据结构，其中树数据结构包括多个网络节点，其中每个网络节点连接到树形数据结构，呈现描绘树状数据结构的径向布局的环，其中可以从顶部到底部遍历多个顶点，复制共享共同祖先的花键边缘的至少一个控制点，以及捆绑样条边通过应用全局强度参数β。

24. 发明授权

US07439974B2 System and method for fast 3-dimensional data fusion 失效
标题翻译：快速3维数据融合的系统和方法
公开(公告)号：US07439974B2
公开(公告)日：2008-10-21
申请号：US11348131
申请日：2006-02-06
申请人： Abdelaziz Chihoub , Yuanhsi (Tony) Chen , Mariappan S. Nadar
发明人： Abdelaziz Chihoub , Yuanhsi (Tony) Chen , Mariappan S. Nadar
IPC分类号： G06T15/40
CPC分类号： G06T15/08
摘要： A method of volume rendering two digital images includes providing a volume-rendering computing sub-system, loading a first image volume into a memory of the volume-rendering sub-system, rendering the first image volume, wherein a 2-dimensional image is output into an image buffer and a set of depth values are output into a depth buffer, loading a second image volume into a memory of the volume-rendering sub-system, rendering the second image volume up to the depth values output from the first image volume, wherein values from the rendering of the second image volume are merged with non-zero values of the image buffer, and rendering the remainder of the second image volume to include second image volume points beyond the depth values output from the rendering of the first image volume, wherein values from the rendering of the remainder of the second image volume are merged with non-zero values of the image buffer.
摘要翻译：一种体绘制两个数字图像的方法包括：提供体积渲染计算子系统，将第一图像体积加载到体绘制子系统的存储器中，渲染第一图像体积，其中输出二维图像将图像缓冲器和一组深度值输出到深度缓冲器中，将第二图像体积加载到体绘制子系统的存储器中，使第二图像体积达到从第一图像体积输出的深度值，其中来自所述第二图像体积的呈现的值与所述图像缓冲器的非零值合并，并且使所述第二图像体积的剩余部分包括超过从所述第一图像的呈现输出的深度值的第二图像体积点体积，其中来自第二图像体积的剩余部分的渲染的值与图像缓冲器的非零值合并。

25. 发明授权

US09519981B2 Visualizing brain network connectivity 有权
标题翻译：可视化大脑网络连接
公开(公告)号：US09519981B2
公开(公告)日：2016-12-13
申请号：US13539863
申请日：2012-07-02
申请人： Sandra Sudarsky , Mariappan S. Nadar , Shanhui Sun , Alban Lefebvre , Bernhard Geiger
发明人： Sandra Sudarsky , Mariappan S. Nadar , Shanhui Sun , Alban Lefebvre , Bernhard Geiger
IPC分类号： G09G5/02 , G06T11/20 , A61B5/00
CPC分类号： G06T11/206 , A61B5/0042 , A61B5/4064
摘要： A method for visualizing brain connectivity includes receiving image data including molecular diffusion of brain tissue, constructing a tree data structure from the image data, wherein the tree data structure comprises a plurality of network nodes, wherein each network node is connected to a root of the tree data structure, rendering a ring of a radial layout depicting the tree data structure, wherein a plurality of vertices may be traversed from the top to the bottom, duplicating at least one control point for spline edges sharing a common ancestor, and bundling spline edges by applying a global strength parameter β.
摘要翻译：用于可视化脑连通性的方法包括接收包括脑组织的分子扩散的图像数据，从图像数据构建树数据结构，其中树数据结构包括多个网络节点，其中每个网络节点连接到树形数据结构，呈现描绘树状数据结构的径向布局的环，其中可以从顶部到底部遍历多个顶点，复制共享共同祖先的花键边缘的至少一个控制点，以及捆绑样条边通过应用全局强度参数β。

26. 发明申请

US20140085318A1 Multi-GPU FISTA Implementation for MR Reconstruction with Non-Uniform K-Space Sampling 有权
标题翻译：用于非均匀K空间采样的MR重建的多GPU FISTA实现
公开(公告)号：US20140085318A1
公开(公告)日：2014-03-27
申请号：US14031374
申请日：2013-09-19
申请人： Mariappan S. Nadar , Steven Martin , Alban Lefebvre , Jun Liu
发明人： Mariappan S. Nadar , Steven Martin , Alban Lefebvre , Jun Liu
IPC分类号： G06T7/00
CPC分类号： G06T7/0012 , G01R33/4824 , G01R33/5608
摘要： A system for performing image reconstruction in a multi-threaded computing environment includes one or more central processing units executing a plurality of k-space components and a plurality of graphic processing units executing a reconstruction component. The k-space components executing on the central processing units include a k-space sample data component operating in a first thread and configured to receive k-space sample data from a first file interface; a k-space sample coordinate data component operating in a second thread and configured to receive k-space sample coordinate data from a second file interface; and a k-space sample weight data component operating in a third thread and configured to retrieve k-space sample weight data from a third file interface. The reconstruction component is configured to receive one or more k-space input data buffers comprising the k-space sample data, the k-space sample coordinate data, and the k-space sample weight data from the one or more central processing units, and reconstruct an image based on the input data buffers using an iterative reconstruction algorithm.
摘要翻译：用于在多线程计算环境中执行图像重建的系统包括执行多个k空间分量的一个或多个中央处理单元和执行重构分量的多个图形处理单元。在中央处理单元上执行的k空间分量包括在第一线程中操作并被配置为从第一文件接口接收k空间样本数据的k空间样本数据分量; 操作在第二线程中并被配置为从第二文件接口接收k空间样本坐标数据的k空间样本坐标数据分量; 以及在第三线程中操作并被配置为从第三文件接口检索k空间样本权重数据的k空间样本权重数据分量。重构分量被配置为从一个或多个中央处理单元接收一个或多个k空间输入数据缓冲器，其包括k空间样本数据，k空间样本坐标数据和k空间样本权重数据，以及使用迭代重建算法基于输入数据缓冲器重构图像。

27. 发明申请

US20120148128A1 UNIFYING RECONSTRUCTION AND MOTION ESTIMATION IN FIRST PASS CARDIAC PERFUSION IMAGING 有权
标题翻译：第一次心脏灌注成像中的统一重建和运动估计
公开(公告)号：US20120148128A1
公开(公告)日：2012-06-14
申请号：US13273410
申请日：2011-10-14
申请人： Christophe Chefd'hotel , Mathews Jacob , Sajan Goud Lingala , Mariappan S. Nadar , Li Zhang
发明人： Christophe Chefd'hotel , Mathews Jacob , Sajan Goud Lingala , Mariappan S. Nadar , Li Zhang
IPC分类号： G06K9/00
CPC分类号： G01R33/56366 , G01R33/5611 , G01R33/56509
摘要： Methods and a system to unify reconstruction and motion estimation steps in first pass cardiac perfusion MRI include a global objective function that meets data consistency, spatial smoothness, motion and contrast dynamics constraints. The global objective decomposed into simpler sub-problems which include low pass filtering of a deformed object, TV shrinkage, analytical Fourier replacement and an l2 minimizing problem. A registration tool based on the local cross-correlation similarity measure and enabled to perform both rigid and flexile deformations, is applied. Registration parameters are tuned by rigid, semi rigid and flexible models at different stages of iterations. A system to perform the methods is also disclosed.
摘要翻译：在第一次心脏灌注MRI中统一重建和运动估计步骤的方法和系统包括满足数据一致性，空间平滑度，运动和对比度动力学约束的全局目标函数。全局目标分解为更简单的子问题，包括变形对象的低通滤波，电视收缩，分析傅立叶置换和最小二乘问题。应用基于局部互相关相似性测量并且能够执行刚性和柔性变形的注册工具。注册参数通过刚性，半刚性和柔性模型在不同的迭代阶段进行调整。还公开了执行方法的系统。

28. 发明授权

US08126279B2 Lifting-based view compensated compression and remote visualization of volume rendered images 有权
标题翻译：基于提升视图补偿压缩和远程可视化的体积渲染图像
公开(公告)号：US08126279B2
公开(公告)日：2012-02-28
申请号：US12146582
申请日：2008-06-26
申请人： Michael W. Marcellin , Ali Bilgin , Hariharan G. Lalgudi , Mariappan S. Nadar
发明人： Michael W. Marcellin , Ali Bilgin , Hariharan G. Lalgudi , Mariappan S. Nadar
IPC分类号： G06K9/36
CPC分类号： H04N19/647 , G06T15/08
摘要： A method for compressing 2D images includes determining a depth map for each of a plurality of sequential 2D images of a 3D volumetric image, determining coordinate transformations the 2D images based on the depth maps and a geometric relationship between the 3D volumetric image and each of the 2D image, performing a lifting-based view compensated wavelet transform on the 2D images using the coordinate transformations to generate a plurality of wavelet coefficients and compressing the wavelet coefficients and depth maps to generate a compressed representation of the 2D images.
摘要翻译：一种用于压缩2D图像的方法包括：确定3D体积图像的多个连续2D图像中的每一个的深度图，基于深度图确定2D图像的坐标变换，以及3D体积图像与3D体积图像中的每一个之间的几何关系 2D图像，使用坐标变换对2D图像执行基于提升的观看补偿小波变换，以生成多个小波系数并压缩小波系数和深度图以生成2D图像的压缩表示。

29. 发明申请

US20090129690A1 LIFTING-BASED VIEW COMPENSATED COMPRESSION AND REMOTE VISUALIZATION OF VOLUME RENDERED IMAGES 有权
标题翻译：基于提升的视图补偿压缩和远程可视化的体积渲染图像
公开(公告)号：US20090129690A1
公开(公告)日：2009-05-21
申请号：US12146582
申请日：2008-06-26
申请人： Michael W. Marcellin , Ali Bilgin , Hariharan G. Lalgudi , Mariappan S. Nadar
发明人： Michael W. Marcellin , Ali Bilgin , Hariharan G. Lalgudi , Mariappan S. Nadar
IPC分类号： G06K9/54
CPC分类号： H04N19/647 , G06T15/08
摘要： A method for compressing 2D images includes determining a depth map for each of a plurality of sequential 2D images of a 3D volumetric image, determining coordinate transformations the 2D images based on the depth maps and a geometric relationship between the 3D volumetric image and each of the 2D image, performing a lifting-based view compensated wavelet transform on the 2D images using the coordinate transformations to generate a plurality of wavelet coefficients and compressing the wavelet coefficients and depth maps to generate a compressed representation of the 2D images.
摘要翻译：一种用于压缩2D图像的方法包括：确定3D体积图像的多个连续2D图像中的每一个的深度图，基于深度图确定2D图像的坐标变换，以及3D体积图像与3D体积图像中的每一个之间的几何关系 2D图像，使用坐标变换对2D图像执行基于提升的观看补偿小波变换，以生成多个小波系数并压缩小波系数和深度图以生成2D图像的压缩表示。

30. 发明申请

US20080129732A1 Perception-based artifact quantification for volume rendering 有权
标题翻译：用于体绘制的基于感知的人造物量化
公开(公告)号：US20080129732A1
公开(公告)日：2008-06-05
申请号：US11881944
申请日：2007-07-30
申请人： Jeffrey P. Johnson , John Patrick Collins , Mariappan S. Nadar , John S. Nafziger , Thomas Stingl , Daphne Yu
发明人： Jeffrey P. Johnson , John Patrick Collins , Mariappan S. Nadar , John S. Nafziger , Thomas Stingl , Daphne Yu
IPC分类号： G06T17/00
CPC分类号： G06T15/08 , G06T7/0002 , G06T2207/30168
摘要： Artifact quantification is provided in volume rendering. Since the visual conspicuity of rendering artifacts strongly influences subjective assessments of image quality, quantitative metrics that accurately correlate with human visual perception may provide consistent values over a range of imaging conditions.
摘要翻译：在体绘制中提供了人工定量。由于渲染工件的视觉显着性强烈影响图像质量的主观评估，与人类视觉感知准确相关的定量度量可能会在成像条件范围内提供一致的值。

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