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    Determining geographic position information from a single image
    1.
    发明授权
    Determining geographic position information from a single image 有权
    从单个图像确定地理位置信息

    公开(公告)号：US08854453B2

    公开(公告)日：2014-10-07

    申请号：US12489737

    申请日：2009-06-23

    申请人： Xin Chen ,  Xiangheng Yang ,  Roger B. Hui ,  Narayanan Alwar

    发明人： Xin Chen ,  Xiangheng Yang ,  Roger B. Hui ,  Narayanan Alwar

    IPC分类号： H04N7/00 ,  H04N7/18 ,  G06K9/00 ,  G01C21/32 ,  G01C11/02 ,  G01S5/16

    CPC分类号： G01S5/16 ,  G01C11/02 ,  G01C21/32

    摘要： Systems, devices, features, and methods for determining geographic position information from an image are disclosed. For example, one method for determining the geographic position information is used to develop a navigation database. The method comprises capturing a plurality of images of geographic features by a camera mounted on a vehicle or a pedestrian. A single image from the plurality of images is identified or selected. A real-world ground distance between a reference ground point in the single image and a ground point corresponding to an object in the single image is determined based on determined calibration values corresponding to the camera. Real-world geographic position information, such as a latitude coordinate and a longitude coordinate, of the ground point corresponding to the object in the single image is determined based on the determined real-world ground distance.

    摘要翻译： 公开了用于从图像确定地理位置信息的系统，设备，特征和方法。 例如，用于确定地理位置信息的一种方法用于开发导航数据库。 该方法包括通过安装在车辆或行人上的照相机捕获多个地理特征图像。 识别或选择来自多个图像的单个图像。 基于对应于相机的确定的校准值来确定单个图像中的参考地面点和对应于单个图像中的物体的接地点之间的现实世界地面距离。 基于所确定的真实世界地面距离来确定与单个图像中的对象相对应的接地点的纬度坐标和经度坐标的实际地理位置信息。

    Detecting ground geographic features in images based on invariant components
    2.
    发明授权
    Detecting ground geographic features in images based on invariant components 有权
    基于不变元件检测图像中的地面地理特征

    公开(公告)号：US08953838B2

    公开(公告)日：2015-02-10

    申请号：US12490538

    申请日：2009-06-24

    申请人： Xin Chen ,  Xiangheng Yang

    发明人： Xin Chen ,  Xiangheng Yang

    IPC分类号： G06K9/00

    CPC分类号： G06K9/00791 ,  G06K9/00697 ,  G06K9/00704 ,  G06K9/00798

    摘要： Systems, devices, features, and methods for detecting geographic features in images, such as, for example, to develop a navigation database are disclosed. For example, a method of detecting a path marking from collected images includes collecting a plurality of images of geographic areas along a path. An image of the plurality of images is selected. Components that represent an object on the path in the selected image are determined. In one embodiment, the determined components are independent or invariant to scale of the object. The determined components are compared to reference components in a data library. If the determined components substantially meet a matching threshold with the reference components, the object in the selected image is identified to be a path marking corresponding to the reference components in the data library.

    摘要翻译： 公开了用于检测图像中的地理特征的系统，设备，特征和方法，例如开发导航数据库。 例如，从收集的图像中检测路径标记的方法包括沿着路径收集多个地理区域的图像。 选择多个图像的图像。 表示所选图像中路径上的对象的组件被确定。 在一个实施例中，所确定的分量对象的尺度是独立的或不变的。 将确定的组件与数据库中的参考组件进行比较。 如果确定的分量基本上满足与参考分量的匹配阈值，则所选图像中的对象被识别为对应于数据库中的参考分量的路径标记。

    Determining Geographic Position Information from a Single Image
    3.
    发明申请
    Determining Geographic Position Information from a Single Image 有权
    从单一图像确定地理位置信息

    公开(公告)号：US20100321489A1

    公开(公告)日：2010-12-23

    申请号：US12489737

    申请日：2009-06-23

    申请人： Xin Chen ,  Xiangheng Yang ,  Roger B. Hui ,  Narayanan Alwar

    发明人： Xin Chen ,  Xiangheng Yang ,  Roger B. Hui ,  Narayanan Alwar

    IPC分类号： H04N7/18

    CPC分类号： G01S5/16 ,  G01C11/02 ,  G01C21/32

    摘要： Systems, devices, features, and methods for determining geographic position information from an image are disclosed. For example, one method for determining the geographic position information is used to develop a navigation database. The method comprises capturing a plurality of images of geographic features by a camera mounted on a vehicle or a pedestrian. A single image from the plurality of images is identified or selected. A real-world ground distance between a reference ground point in the single image and a ground point corresponding to an object in the single image is determined based on determined calibration values corresponding to the camera. Real-world geographic position information, such as a latitude coordinate and a longitude coordinate, of the ground point corresponding to the object in the single image is determined based on the determined real-world ground distance.

    摘要翻译： 公开了用于从图像确定地理位置信息的系统，设备，特征和方法。 例如，用于确定地理位置信息的一种方法用于开发导航数据库。 该方法包括通过安装在车辆或行人上的照相机捕获多个地理特征图像。 识别或选择来自多个图像的单个图像。 基于对应于相机的确定的校准值来确定单个图像中的参考地面点和对应于单个图像中的物体的接地点之间的现实世界地面距离。 基于所确定的真实世界地面距离来确定与单个图像中的对象相对应的接地点的纬度坐标和经度坐标的实际地理位置信息。

    Detecting Ground Geographic Features in Images Based on Invariant Components
    4.
    发明申请
    Detecting Ground Geographic Features in Images Based on Invariant Components 有权
    基于不变元件检测图像中的地面地理特征

    公开(公告)号：US20100329508A1

    公开(公告)日：2010-12-30

    申请号：US12490538

    申请日：2009-06-24

    申请人： Xin Chen ,  Xiangheng Yang

    发明人： Xin Chen ,  Xiangheng Yang

    IPC分类号： G06K9/00 ,  G06F17/30

    CPC分类号： G06K9/00791 ,  G06K9/00697 ,  G06K9/00704 ,  G06K9/00798

    摘要： Systems, devices, features, and methods for detecting geographic features in images, such as, for example, to develop a navigation database are disclosed. For example, a method of detecting a path marking from collected images includes collecting a plurality of images of geographic areas along a path. An image of the plurality of images is selected. Components that represent an object on the path in the selected image are determined. In one embodiment, the determined components are independent or invariant to scale of the object. The determined components are compared to reference components in a data library. If the determined components substantially meet a matching threshold with the reference components, the object in the selected image is identified to be a path marking corresponding to the reference components in the data library.

    摘要翻译： 公开了用于检测图像中的地理特征的系统，设备，特征和方法，例如开发导航数据库。 例如，从收集的图像中检测路径标记的方法包括沿着路径收集多个地理区域的图像。 选择多个图像的图像。 表示所选图像中路径上的对象的组件被确定。 在一个实施例中，所确定的分量对象的尺度是独立的或不变的。 将确定的组件与数据库中的参考组件进行比较。 如果确定的分量基本上满足与参考分量的匹配阈值，则所选图像中的对象被识别为对应于数据库中的参考分量的路径标记。

    Guided Wave Non-Destructive Testing Using Magnetostrictive Sensor with Moving Magnet and Partial Activation of Magnetostrictive Strip
    5.
    发明公开
    Guided Wave Non-Destructive Testing Using Magnetostrictive Sensor with Moving Magnet and Partial Activation of Magnetostrictive Strip 审中-公开

    公开(公告)号：US20240027403A1

    公开(公告)日：2024-01-25

    申请号：US18357142

    申请日：2023-07-23

    申请人： Sergey Vinogradov ,  Xin Chen ,  Jay Fisher

    发明人： Sergey Vinogradov ,  Xin Chen ,  Jay Fisher

    IPC分类号： G01N29/24 ,  G01N29/265

    CPC分类号： G01N29/2412 ,  G01N29/265 ,  G01N2291/044 ,  G01N2291/0422

    摘要： A “partial activation” method of magnetostrictive guided wave testing of a structure. A coil-wrapped magnetostrictive strip is acoustically coupled to the surface of the structure. A permanent magnet is placed over a portion of the strip, such that the permanent magnet covers all or most of the width of the strip but only a portion of its length. A pulsed alternating current source activates the magnetostrictive strip, thereby producing magnetostrictive vibrations in the magnetostrictive strip, and thereby resulting in guided waves in the structure. Response signals are received, then the permanent magnet is moved to a next position along the length of the magnetostrictive strip. As the magnet is moved along the strip, the strip is activated and response signals are received, thereby testing a desired portion of the structure under the strip. The response signals are analyzed to determine the presence of anomalies in the structure.

    Synchronization method and system for single event list type data in PET imaging
    7.
    发明授权
    Synchronization method and system for single event list type data in PET imaging 有权

    公开(公告)号：US10930031B2

    公开(公告)日：2021-02-23

    申请号：US14408935

    申请日：2012-08-14

    申请人： Qingguo Xie ,  Yuanbao Chen ,  Jun Zhu ,  Xin Chen ,  Zhongyi Wu ,  Luyao Wang

    发明人： Qingguo Xie ,  Yuanbao Chen ,  Jun Zhu ,  Xin Chen ,  Zhongyi Wu ,  Luyao Wang

    IPC分类号： G06T11/00 ,  G01T1/29 ,  A61B6/03

    摘要： A method for synchronizing list-mode data of single events in a PET imaging includes: acquiring list-mode data of single events of each independent detector module, calculating a probability density of time intervals between occurrences of single events in detector module and setting initial parameters, determining detection starting time difference of each detector module with iterative peak searching and graded time window, and performing synchronization correction and coincidence discrimination on the single event data in each detector module based on the detection starting time difference. A system for synchronizing list-mode data of single events in a PET imaging includes: a data acquisition and frequency difference compensation module, an initial parameter setting module, a coarse time scale coincidence module, a fine time scale coincidence module and a data synchronization correction and coincidence discrimination module.

    Measuring tissue shear wave properties using one excitation pulse and excitation pulses having different widths and shapes
    9.
    发明授权
    Measuring tissue shear wave properties using one excitation pulse and excitation pulses having different widths and shapes 有权

    公开(公告)号：US10327739B2

    公开(公告)日：2019-06-25

    申请号：US15090357

    申请日：2016-04-04

    申请人： Yi Zheng ,  Siping Chen ,  Tianfu Wang ,  Xin Chen ,  Haoming Lin

    发明人： Yi Zheng ,  Siping Chen ,  Tianfu Wang ,  Xin Chen ,  Haoming Lin

    IPC分类号： A61B8/08 ,  G01S7/52 ,  G01S7/62

    摘要： Ultrasound radiation using a single tone burst pulse is applied to a selected location in a tissue region. The induced shear wave is detected in the region and its spectral distribution is calculated and analyzed. This detection may be repeated with other excitation pulses having different widths or different shapes at the same location. The spectral analysis of the detected shear wave is performed according to a nonlinear shear model for solving nonlinearity and viscoelasticity of the tissue at a single location. The detection location can be at one point at a time for imaging two-dimensional or three-dimensional tissue nonlinearities and shear wave properties including nonlinear magnitude variations, nonlinear phase variations, nonlinear coefficients, and viscoelasticity. The induced shear wave are detected at multiple locations along the shear propagation directions for calculating different shear group velocities and different shear phase velocities using different excitation pulses, and calculating nonlinearity and viscoelasticity.