System and Method For Feature Detection In Image Sequences
    11.
    发明申请
    System and Method For Feature Detection In Image Sequences 审中-公开
    图像序列中特征检测的系统和方法

    公开(公告)号:US20070147682A1

    公开(公告)日:2007-06-28

    申请号:US11566353

    申请日:2006-12-04

    IPC分类号: G06K9/46

    摘要: A method for processing image data includes inputting image data, determining a plurality of quadrature filter pairs based on filter parameter values to detect features of interest in the image data, applying the quadrature filter pairs to the image data to obtain a set of filter responses, and processing the filter responses to obtain the features of interest in the image data.

    摘要翻译: 一种处理图像数据的方法包括输入图像数据,基于滤波器参数值确定多个正交滤波器对,以检测图像数据中感兴趣的特征,将正交滤波器对应用于图像数据以获得一组滤波器响应, 并处理滤波器响应以获得图像数据中感兴趣的特征。

    Practical image reconstruction for magnetic resonance imaging
    13.
    发明授权
    Practical image reconstruction for magnetic resonance imaging 有权
    磁共振成像的实用图像重建

    公开(公告)号:US07903858B2

    公开(公告)日:2011-03-08

    申请号:US11926912

    申请日:2007-10-29

    IPC分类号: G06K9/00 A61B5/05

    摘要: A set of image-space data is reconstructed from a set of k-space data. The set of image-space data is generated by minimizing a cost functional by an iterative non-linear conjugate gradient process. The iterative process may be accelerated by introducing k-space weighting to the cost functional. With proper choice of k-space weighting, a block-Toeplitz matrix is generated which permits use of Fast Fourier Transform techniques. An image is rendered from the set of image-space data.

    摘要翻译: 从一组k空间数据重建一组图像空间数据。 通过使迭代非线性共轭梯度过程的功能最小化来生成图像空间数据集合。 可以通过向成本函数引入k空间加权来加速迭代过程。 通过适当选择k空间加权,生成块Toeplitz矩阵,其允许使用快速傅里叶变换技术。 从图像空间数据集中呈现图像。

    Practical Image Reconstruction for Magnetic Resonance Imaging
    14.
    发明申请
    Practical Image Reconstruction for Magnetic Resonance Imaging 有权
    磁共振成像实用图像重建

    公开(公告)号:US20080107319A1

    公开(公告)日:2008-05-08

    申请号:US11926912

    申请日:2007-10-29

    IPC分类号: G06K9/00

    摘要: A set of image-space data is reconstructed from a set of k-space data. The set of image-space data is generated by minimizing a cost functional by an iterative non-linear conjugate gradient process. The iterative process may be accelerated by introducing k-space weighting to the cost functional. With proper choice of k-space weighting, a block-Toeplitz matrix is generated which permits use of Fast Fourier Transform techniques. An image is rendered from the set of image-space data.

    摘要翻译: 从一组k空间数据重建一组图像空间数据。 通过使迭代非线性共轭梯度过程的功能最小化来生成图像空间数据集合。 可以通过向成本函数引入k空间加权来加速迭代过程。 通过适当选择k空间加权,生成块Toeplitz矩阵,其允许使用快速傅里叶变换技术。 从图像空间数据集中呈现图像。

    Method for correcting motion artifacts in magnetic resonance images
    15.
    发明授权
    Method for correcting motion artifacts in magnetic resonance images 有权
    用于校正磁共振图像中的运动伪像的方法

    公开(公告)号:US08542901B2

    公开(公告)日:2013-09-24

    申请号:US12632240

    申请日:2009-12-07

    IPC分类号: A61B6/03

    摘要: For resonance image data of an imaged subject, a method that first detects and estimates the dominant motions of k-space data (i.e., the motion vectors) and then constructs a graphical model for each estimated motion vector. The segments of the k-space that are determined to be corrupted by motion are restored by minimizing the energy associated with the corresponding graphical model. Consequently, the MR image of the imaged subject becomes free of motion artifacts.

    摘要翻译: 对于成像对象的共振图像数据,首先检测并估计k空间数据的主要运动(即,运动矢量),然后为每个估计运动矢量构建图形模型的方法。 通过最小化与相应的图形模型相关联的能量来恢复被确定为被运动破坏的k空间的段。 因此,成像对象的MR图像变得没有运动伪像。

    METHOD FOR CORRECTING MOTION ARTIFACTS IN MAGNETIC RESONANCE IMAGES
    17.
    发明申请
    METHOD FOR CORRECTING MOTION ARTIFACTS IN MAGNETIC RESONANCE IMAGES 有权
    用于校正磁共振图像中的运动文学的方法

    公开(公告)号:US20100142789A1

    公开(公告)日:2010-06-10

    申请号:US12632240

    申请日:2009-12-07

    IPC分类号: G06K9/00 A61B5/055

    摘要: For resonance image data of an imaged subject, a method that first detects and estimates the dominant motions of k-space data (i.e., the motion vectors) and then constructs a graphical model for each estimated motion vector. The segments of the k-space that are determined to be corrupted by motion are restored by minimizing the energy associated with the corresponding graphical model. Consequently, the MR image of the imaged subject becomes free of motion artifacts.

    摘要翻译: 对于成像对象的共振图像数据,首先检测并估计k空间数据的主要运动(即,运动矢量),然后为每个估计运动矢量构建图形模型的方法。 通过最小化与相应的图形模型相关联的能量来恢复被确定为被运动破坏的k空间的段。 因此,成像对象的MR图像变得没有运动伪像。

    Methods for deblending of seismic shot gathers

    公开(公告)号:US09602781B2

    公开(公告)日:2017-03-21

    申请号:US14112502

    申请日:2012-03-21

    CPC分类号: H04N7/18 G01V1/003 G01V1/36

    摘要: A system and methods to deblend seismic data from a plurality of sources and received by a plurality of sensors as shot gathers are disclosed. The deblending is performed by a Mutual Interdependence Analysis Method to separate contributions of different shots. Deblending is also performed by applying a measure of coherence in parallel data domains such as Common Shot Gather and Common Midpoint. Deblending is also achieved by using the hyperbolic nature of seismic data in the common midpoint domain. Deblended signals are estimated and are applied to create a seismic image. Also, Bergman iteration based migration is applied directly on the blended seismic shot gathers without first deblending as an alternative method. The methods are applied in seismic imaging for exploration of natural resources.