公开(公告)号：US20110206240A1

公开(公告)日：2011-08-25

申请号：US13126622

申请日：2008-10-30

申请人： Baoming Hong ,  Julia Pavlovich ,  David Schafer ,  Zhengrong Ying

发明人： Baoming Hong ,  Julia Pavlovich ,  David Schafer ,  Zhengrong Ying

IPC分类号： G06K9/00

CPC分类号： G06K9/00771 ,  G06K9/6247 ,  G06K2209/09

摘要： Potential threat items may be concealed inside objects, such as portable electronic devices, that are subject to imaging for example, at a security checkpoint. Data from an imaged object can be compared to pre-determined object data to determine a class for the imaged object. Further, an object can be identified inside a container (e.g., a laptop inside luggage). One-dimensional Eigen projections can be used to partition the imaged object into partitions, and feature vectors from the partitions and the object image data can be used to generate layout feature vectors. One or more layout feature vectors can be compared to training data for threat versus non-threat-containing items from the imaged object's class to determine if the imaged object contains a potential threat item.

摘要翻译： 潜在威胁物品可能隐藏在诸如便携式电子设备的物体内，例如在安全检查点进行成像。 来自成像对象的数据可以与预定对象数据进行比较，以确定成像对象的类。 此外，可以在容器（例如，行李箱内的膝上型计算机）内识别物体。 可以使用一维特征投影来将成像对象分割成分区，并且来自分区和对象图像数据的特征向量可用于生成布局特征向量。 可以将一个或多个布局特征向量与来自成像对象的类的威胁与不包含威胁的项目的训练数据进行比较，以确定成像对象是否包含潜在的威胁项目。

公开(公告)号：US07539337B2

公开(公告)日：2009-05-26

申请号：US11183378

申请日：2005-07-18

申请人： Sergey Simanovsky ,  Zhengrong Ying ,  Carl R. Crawford

发明人： Sergey Simanovsky ,  Zhengrong Ying ,  Carl R. Crawford

IPC分类号： G06K9/00

CPC分类号： G06K9/00771 ,  G01T1/2985 ,  G01V5/0041 ,  G01V5/005 ,  G06K9/6219

摘要： A method of and a system for splitting a compound object using multi-energy CT data including a density and an atomic number measurements are provided. The method comprises: compound object detection; computing a two-dimensional DZ distribution of a compound object; identifying clusters within the DZ distribution; assigning a component label to each object voxel based on the DZ distribution clusters; and post-processing the set of voxels identified as belonging to each component.

摘要翻译： 提供了使用包括密度和原子序数测量的多能量CT数据来分割复合对象的方法和系统。 该方法包括：复合物体检测; 计算复合对象的二维DZ分布; 识别DZ分布中的簇; 基于DZ分布集群为每个对象体素分配一个组件标签; 并且后处理被识别为属于每个组件的一组体素。

公开(公告)号：US07302083B2

公开(公告)日：2007-11-27

申请号：US10883199

申请日：2004-07-01

申请人： Gregory L. Larson ,  Sergey Simanovsky ,  Zhengrong Ying ,  Carl R. Crawford

发明人： Gregory L. Larson ,  Sergey Simanovsky ,  Zhengrong Ying ,  Carl R. Crawford

IPC分类号： G06K9/00 ,  G01N23/04

CPC分类号： G06T7/0004 ,  G06T2207/10081 ,  G06T2207/30112

摘要： A method of and a system for sharp object detection using computed tomography images are provided. The method comprises identifying voxels corresponding to individual objects; performing eigen-analysis and generating eigen-projection of an identified object; computing an axial concavity ratio of the identified object; computing a pointness measurement of the identified object; computing a flat area of the identified object; calculating a sharpness score of the identified object; and declaring the identified object as a threat if the sharpness score is greater than a pre-defined threshold.

摘要翻译： 提供了使用计算机断层摄影图像进行尖锐物体检测的方法和系统。 该方法包括识别与各个对象相对应的体素; 执行特征分析并产生识别对象的特征投影; 计算所识别的物体的轴向凹度比; 计算所识别对象的点测量; 计算所识别对象的平坦区域; 计算识别对象的锐度得分; 并且如果清晰度得分大于预定义的阈值，则将所识别的对象声明为威胁。

公开(公告)号：US07190757B2

公开(公告)日：2007-03-13

申请号：US10850910

申请日：2004-05-21

申请人： Zhengrong Ying ,  Ram Naidu ,  Sergey Simanovsky ,  Carl R. Crawford

发明人： Zhengrong Ying ,  Ram Naidu ,  Sergey Simanovsky ,  Carl R. Crawford

IPC分类号： A61B6/00

CPC分类号： G01N23/046 ,  G01N2223/419

摘要： A method of and a system for computing Z (effective atomic number) images from projection data are provided, wherein the projections are acquired using at least two x-ray spectra for a set of scanned objects, including a set of low energy projections and a set of high energy projections; the method comprises decomposing the low energy projections and high energy projections into photoelectric projections, reconstructing the photoelectric projections into photoelectric images, reconstructing one of the two sets of projections into CT images, and computing Z images from the CT images and the photoelectric images with parameters obtained from a calibration procedure.

摘要翻译： 提供了一种用于从投影数据计算Z（有效原子序号）图像的方法和系统，其中使用用于一组扫描对象的至少两个X射线光谱来获取投影，包括一组低能量投影和 一套高能量投影; 该方法包括将低能量投影和高能量投影分解为光电投影，将光电投影重建为光电图像，将两组投影中的一个重建为CT图像，并从CT图像和光电图像中计算Z图像 从校准程序获得。

公开(公告)号：US20060274066A1

公开(公告)日：2006-12-07

申请号：US11142216

申请日：2005-06-01

申请人： Zhengrong Ying ,  Matthew Hirsch ,  Purvin Desai ,  Kyle Guilbert ,  Sergey Simanovsky ,  Carl Crawford

发明人： Zhengrong Ying ,  Matthew Hirsch ,  Purvin Desai ,  Kyle Guilbert ,  Sergey Simanovsky ,  Carl Crawford

IPC分类号： G06T17/00

CPC分类号： A61B6/482 ,  A61B6/03 ,  G01V5/0041 ,  G01V5/005 ,  G06T11/008

摘要： A method of and a system for displaying volumetric multi-energy CT images are disclosed, wherein a CT image, a Z image, and a label image from an automatic explosive detection are provided, are disclosed. The method comprises generating an index image through a nonlinear transformation of the CT image, the Z image, and the label image, rotating and coloring the index image as desired, and rendering and displaying the rotated and colored image.

摘要翻译： 公开了一种用于显示体积多能CT图像的方法和系统，其中提供了CT图像，Z图像和来自自动爆炸检测的标签图像。 该方法包括通过CT图像，Z图像和标签图像的非线性变换生成索引图像，根据需要旋转和着色索引图像，以及渲染和显示旋转和着色图像。

公开(公告)号：US20060002585A1

公开(公告)日：2006-01-05

申请号：US10883199

申请日：2004-07-01

申请人： Gregory Larson ,  Sergey Simanovsky ,  Zhengrong Ying ,  Carl Crawford

发明人： Gregory Larson ,  Sergey Simanovsky ,  Zhengrong Ying ,  Carl Crawford

IPC分类号： G06K9/00

CPC分类号： G06T7/0004 ,  G06T2207/10081 ,  G06T2207/30112

摘要： A method of and a system for sharp object detection using computed tomography images are provided. The method comprises identifying voxels corresponding to individual objects; performing eigen-analysis and generating eigen-projection of an identified object; computing an axial concavity ratio of the identified object; computing a pointness measurement of the identified object; computing a flat area of the identified object; calculating a sharpness score of the identified object; and declaring the identified object as a threat if the sharpness score is greater than a pre-defined threshold.

摘要翻译： 提供了使用计算机断层摄影图像进行尖锐物体检测的方法和系统。 该方法包括识别与各个对象相对应的体素; 执行特征分析并产生识别对象的特征投影; 计算所识别的物体的轴向凹度比; 计算所识别对象的点测量; 计算所识别对象的平坦区域; 计算识别对象的锐度得分; 并且如果清晰度得分大于预定义的阈值，则将所识别的对象声明为威胁。

公开(公告)号：US10902647B2

公开(公告)日：2021-01-26

申请号：US16270692

申请日：2019-02-08

申请人： Zhengrong Ying

发明人： Zhengrong Ying

IPC分类号： G06K9/00 ,  G06T11/00 ,  G01N23/046

摘要： A system for iteratively reconstructing computed tomography images through three domains is disclosed. The system comprises a raw domain processor, a projection domain processor, and an image domain processor. The system also comprises two iterative loops: one is through a raw synthesizer connecting the raw domain processor and the projection domain processor, and the other is through a projection synthesizer connecting the projection domain processor and the image domain processor respectively.

公开(公告)号：US20200258270A1

公开(公告)日：2020-08-13

申请号：US16270692

申请日：2019-02-08

申请人： Zhengrong Ying

发明人： Zhengrong Ying

IPC分类号： G06T11/00 ,  G01N23/046

摘要： A system for iteratively reconstructing computed tomography images through three domains is disclosed. The system comprises a raw domain processor, a projection domain processor, and an image domain processor. The system also comprises two iterative loops: one is through a raw synthesizer connecting the raw domain processor and the projection domain processor, and the other is through a projection synthesizer connecting the projection domain processor and the image domain processor respectively.

公开(公告)号：US09835733B2

公开(公告)日：2017-12-05

申请号：US14700178

申请日：2015-04-30

申请人： Zhengrong Ying

发明人： Zhengrong Ying

IPC分类号： G01T1/20

CPC分类号： G01T1/2018 ,  G01N2223/419 ,  G01N2223/505 ,  G01T1/2002

摘要： An apparatus for detecting X-rays and converting the detected X-ray intensities into digital signals is disclosed. The apparatus places Analog to Digital Conversion (ADC) chips directly under a scintillator array along the X-ray beam direction and uses a shield that is placed between a photodiode substrate and an Analog to Digital Conversion (ADC) chip to block X-rays from directly reaching the dies of the ADC chips, which are sensitive to X-rays. Also an X-ray CT system utilizing the disclosed apparatus for detecting X-rays is provided.

公开(公告)号：US09285327B2

公开(公告)日：2016-03-15

申请号：US13760127

申请日：2013-02-06

申请人： Zhengrong Ying

发明人： Zhengrong Ying

IPC分类号： A61B6/03 ,  G01N23/04 ,  G01T1/29 ,  A61B6/00

CPC分类号： G01N23/046 ,  A61B6/032 ,  A61B6/4085 ,  A61B6/4233 ,  A61B6/4291 ,  A61B6/5258 ,  A61B6/585 ,  G01N2223/419 ,  G01T1/2985

摘要： An Adjustable Photon Detection System (APDS) for multi-slice X-ray CT systems and a multi-slice X-ray CT system using the APDS are disclosed; wherein the APDS can be adjusted to be aligned to different X-ray source positions; wherein the multi-slice X-ray CT system comprises one or more X-ray sources, and one or more APDS; wherein the multi-slice X-ray CT system may also include a detector position calculator for calculating effective detector positions and a detector position corrector for correcting projection data using calculated effective detector positions.

摘要翻译： 公开了一种用于多切片X射线CT系统的可调光子检测系统（APDS）和使用APDS的多切片X射线CT系统; 其中可以将APDS调整为与不同X射线源位置对准; 其中所述多切片X射线CT系统包括一个或多个X射线源和一个或多个APDS; 其中所述多切片X射线CT系统还可以包括用于计算有效检测器位置的检测器位置计算器和用于使用计算的有效检测器位置校正投影数据的检测器位置校正器。