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    • 32. 发明授权
    • Computer tomography imaging device and method
    • 计算机断层扫描成像装置及方法
    • US09380984B2
    • 2016-07-05
    • US13322696
    • 2009-12-30
    • Liang LiZhiqiang ChenLi ZhangKejun KangYuanjing LiYinong LiuYuxiang XingZiran Zhao
    • Liang LiZhiqiang ChenLi ZhangKejun KangYuanjing LiYinong LiuYuxiang XingZiran Zhao
    • G06T11/00A61B6/03A61B6/06A61B6/00
    • A61B6/032A61B6/06A61B6/4452A61B6/469G06T11/006G06T2211/416G06T2211/421G06T2211/424
    • The present invention discloses a method for performing CT imaging on a region of interest of an object under examination, comprising: acquiring the CT projection data of the region of interest; acquiring the CT projection data of region B; selecting a group of PI line segments covering the region of interest, and calculating the reconstruction image value for each PI line segment in the group; and combining the reconstruction image values in all the PI line segments to obtain the image of the region of interest. The present invention further discloses a CT imaging device using this method and a data processor therein. Since the 2D/3D slice image of the region of interest can be exactly reconstructed and obtained as long as the X-ray beam covers the region of interest and the region B, it is possible to use a small-sized detector to perform CT imaging on the region of interest at any position of a large-sized object, which reduces to a great extent the radiation dose of the X-ray during the CT scanning.
    • 本发明公开了一种对被检查物体的感兴趣区域进行CT成像的方法,包括:获取感兴趣区域的CT投影数据; 获取区域B的CT投影数据; 选择覆盖感兴趣区域的一组PI线段,并计算组中每个PI线段的重建图像值; 并且将所有PI线段中的重建图像值组合以获得感兴趣区域的图像。 本发明还公开了一种使用该方法的CT成像装置及其中的数据处理器。 由于只要X射线束覆盖感兴趣区域和区域B,就可以精确地重构和获得感兴趣区域的2D / 3D切片图像,因此可以使用小尺寸检测器来执行CT成像 在大尺寸物体的任何位置处的感兴趣区域,其在CT扫描期间在很大程度上降低X射线的辐射剂量。
    • 36. 发明授权
    • Systems, methods, and media for capturing scene images and depth geometry and generating a compensation image
    • 用于捕获场景图像和深度几何并产生补偿图像的系统,方法和媒体
    • US09122946B2
    • 2015-09-01
    • US12161415
    • 2007-01-24
    • Li ZhangShree K. Nayar
    • Li ZhangShree K. Nayar
    • G09G3/20G06T7/00G06K9/20
    • G06K9/2036G06K2209/401
    • In some embodiments, systems for capturing scene images and depth geometry are provided, comprising a projector, an optical sensor, and a digital processing device. The projector is capable of being defocused with respect to a scene and projects light having a shifting periodic illumination pattern on the scene. The optical sensor has a plurality of pixels and detects a portion of the radiance of at least one image of the scene at each of the pixels. The digital processing device is capable of being coupled to the optical sensor and obtains a temporal radiance profile from the radiance over a time period for each of the pixels, determines an amount of projection defocus at each of the of pixels using the temporal radiance profile, and, at each of the pixels, computes a depth to the scene at the pixel using the amount of projection defocus at the pixel.
    • 在一些实施例中,提供了用于捕获场景图像和深度几何的系统,包括投影仪,光学传感器和数字处理装置。 投影机能够相对于场景散焦,并且投射在场景上具有移动的周期性照明图案的光。 光学传感器具有多个像素并且检测每个像素处的场景的至少一个图像的一部分的辐射度。 数字处理装置能够耦合到光学传感器并且从每个像素的时间周期的辐射中获得时间辐射轮廓,使用时间辐射轮廓确定每个像素处的投影散焦量, 并且在每个像素处,使用像素处的投影散焦量来计算像素处的场景的深度。
    • 37. 发明授权
    • Model checking for distributed application validation
    • 分布式应用程序验证模型检查
    • US09092561B2
    • 2015-07-28
    • US12908007
    • 2010-10-20
    • Lidan MiaoPeng SongLi ZhangMihail G. Tarta
    • Lidan MiaoPeng SongLi ZhangMihail G. Tarta
    • G06F11/36G06F11/34
    • G06F11/3612G06F11/3447G06F11/3476G06F11/3608G06F11/3692
    • A model checking system is described herein that more effectively verifies and validates the design of distributed applications by providing a model and a generic framework to check application invariant properties, detect anomaly behaviors, and monitor application health. The model checking system checks on-line application behavior against application models derived from formal descriptions of the application. The system formulates the concrete application as an abstract model and a number of rules or properties that are expected to hold for the application under all conditions. The model checker compares the actual application execution with the models and either confirms that the properties hold true or reports that the properties are violated. Thus, the model checking system provides more efficient and thorough validation of distributed applications under more realistic production conditions.
    • 本文描述了一种模型检查系统,通过提供模型和通用框架来更有效地验证和验证分布式应用程序的设计,以检查应用程序不变属性,检测异常行为和监视应用程序运行状况。 模型检查系统根据从应用程序的形式描述导出的应用程序模型检查在线应用程序行为。 该系统将具体应用程序作为抽象模型以及预期在所有条件下都适用于应用程序的许多规则或属性。 模型检查器将实际应用程序执行与模型进行比较,并确认属性成立或报告属性被违反。 因此,模型检查系统在更现实的生产条件下提供了分布式应用程序的更有效和彻底的验证。