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1.发明公开Apparatus and method for dual-energy X-ray imaging 有权Vorrichtung und Verfahrenfürzwei-EnergienRöntgenstrahlungs-Bilderzeugung
公开(公告)号：EP0938250A2
公开(公告)日：1999-08-25
申请号：EP99301149.3
申请日：1999-02-17
发明人： Chao, Yong-Sheng
IPC分类号： H05G1/60
CPC分类号： A61B6/482 , A61B6/06 , A61B6/4035 , A61B6/405 , A61B6/4241 , G01T1/1648 , G06T11/006 , G06T2211/408 , G21K1/025 , H05G1/60
摘要： Apparatus and method for performing dual-energy x-ray imaging using two-dimensional detectors. The apparatus consists of, in physical order, an x-ray source, a front two-dimensional x-ray detector, a beam selector, and a rear two-dimensional x-ray detector. The subject is located between the x-ray source and front detector. The beam selector prevents primary x-rays from reaching selected locations of the rear detector. A pair of primary dual-energy images is obtained at the rear detector. Using a dual-energy data decomposition method, a low-resolution primary x-ray front detector image is calculated, from which a high-resolution primary dual-energy image pair is calculated. In addition, the data decomposition method can be used to calculate a pair of high-spatial-resolution material composition images.
摘要翻译： 使用二维检测器进行双能X射线成像的装置和方法。 该装置以物理顺序包括x射线源，前二维X射线检测器，束选择器和后二维X射线检测器。 主体位于x射线源和前端检测器之间。 光束选择器防止主X射线到达后检测器的选定位置。 在后检测器处获得一对主要双能量图像。 使用双能数据分解方法，计算低分辨率初级X射线前检测器图像，计算出高分辨率主要双能量图像对。 另外，数据分解方法可用于计算一对高空间分辨率的材料合成图像。
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公开(公告)号：EP0938250A3
公开(公告)日：2002-10-16
申请号：EP99301149.3
申请日：1999-02-17
发明人： Chao, Yong-Sheng
CPC分类号： A61B6/482 , A61B6/06 , A61B6/4035 , A61B6/405 , A61B6/4241 , G01T1/1648 , G06T11/006 , G06T2211/408 , G21K1/025 , H05G1/60
摘要： Apparatus and method for performing dual-energy x-ray imaging using two-dimensional detectors. The apparatus consists of, in physical order, an x-ray source, a front two-dimensional x-ray detector, a beam selector, and a rear two-dimensional x-ray detector. The subject is located between the x-ray source and front detector. The beam selector prevents primary x-rays from reaching selected locations of the rear detector. A pair of primary dual-energy images is obtained at the rear detector. Using a dual-energy data decomposition method, a low-resolution primary x-ray front detector image is calculated, from which a high-resolution primary dual-energy image pair is calculated. In addition, the data decomposition method can be used to calculate a pair of high-spatial-resolution material composition images.
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3.发明公开Apparatus for dynamic control of light direction in a broad field of view 审中-公开Vorrichtung zur dynamischen Lichtstrahlsteuerung
公开(公告)号：EP1126306A2
公开(公告)日：2001-08-22
申请号：EP01300320.7
申请日：2001-01-15
发明人： Chao, Yong-Shen , Zhao, Ying
IPC分类号： G02B26/08
CPC分类号： G02B26/0875
摘要： Apparatus for deflecting light beams tends either to be slow (electromechanical) or to have a narrow range of deflection. Here a light beam can be dynamically controlled to approach ±90° in pitch and yaw. The device comprises an initial dynamic beam deflector 14 and a compound light beam direction mapper 16. The beam direction mapper 16 includes a beam size reducer 18, a beam transmission adapter 20, and a projector 22. An initial light beam 24 from a light source 12 is deflected by a small angle θ 0 by the initial dynamic beam deflector 14. The initially deflected light beam 26 is focused by the beam size reducer 18 to a light energy spot 48 on the beam transmission adapter 20, which transfers the light spot to the projector 22. The projector 22 emits an output light beam at the far field 38 of its output space 34 with an output deflection angle θ larger than the initial deflection angle θ 0 . All components are based on classical geometrical optics and the energy of the output light beam 32 can be within an order of magnitude of that of the input light beam 24. The adaptor 20 can be, for instance, a fiber-optic plate or a positive lens assembly, and the projector a specialty sphere lens or camera-type lens system.
摘要翻译： 用于偏转光束的装置倾向于变慢（机电）或具有窄范围的偏转。 在这里，光束可以被动态控制，在俯仰和偏航方面接近+/- 90°。 该装置包括初始动态光束偏转器14和复合光束方向映射器16.光束方向映射器16包括光束尺寸减小器18，光束传输适配器20和投影仪22.来自光源的初始光束24 12由初始动态光束偏转器14偏转小角度θ;最初偏转的光束26被光束尺寸减小器18聚焦到光束传输适配器20上的光能点48，光束传输适配器20将光点 投影仪22以输出偏转角度θ输出在其输出空间34的远场38处的输出光束; 大于初始偏转角度和角度; 0。 所有组件均基于经典的几何光学元件，并且输出光束32的能量可以在输入光束24的能量的一个数量级内。适配器20可以是例如光纤板或正极 镜头组件和投影机专用球面镜头或相机型镜头系统。
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4.发明公开
公开(公告)号：EP3371631A1
公开(公告)日：2018-09-12
申请号：EP16920449.2
申请日：2016-12-22
CPC分类号： G06K9/6232 , G01N21/21 , G02B5/3083 , G02B27/283 , G06K9/78
摘要： Embodiments of an active or laser polarimeter are disclosed that transmit multiple independent and tunable temporally-multiplexed polarization states and record or image, at video rates if necessary, the polarized intensity or irradiance reflected or transmitted by objects illuminated by those states, and apply the recorded data to material and/or object classification and recognition using classification algorithms that exploit features of polarization signatures dependent on material type, texture, and/or object shape. The polarimeter also generally records and utilizes one or more passive polarization measurements in order to realize a hybrid active-passive polarimeter. The polarimeter channels are configured and tuned to access multi-dimensional signature spaces specified by existing signature models and/or measurements, with polarization-modulator settings derived by a newly-disclosed subspace-projection algorithm that maximizes a target contrast parameter. Multiple independent polarization channels allow the new polarimeter to outperform conventional two-channel polarimeters, while the subspace-projection algorithm allows the number of channels to be minimized in order to minimize sensor size, weight, and power (SWaP) and maximize speed. Multiple channels are realized by multiplexing among independent transmitter polarization states with one or more high-speed multiplexers, in one embodiment a set of fold-mirror assemblies in the transmitter among which the laser beam is switched by one or more galvanometer scanners fitted in one embodiment with a newly-disclosed composite mirror. The method for material and object classification and recognition includes the maximally-biased classifier derived by the subspace-projection algorithm applied to a single target Mueller matrix, and methods to generalize the classifier.
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公开(公告)号：EP0938250B1
公开(公告)日：2006-05-03
申请号：EP99301149.3
申请日：1999-02-17
发明人： Chao, Yong-Sheng
CPC分类号： A61B6/482 , A61B6/06 , A61B6/4035 , A61B6/405 , A61B6/4241 , G01T1/1648 , G06T11/006 , G06T2211/408 , G21K1/025 , H05G1/60
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6.发明公开
公开(公告)号：EP1126306A3
公开(公告)日：2003-08-27
申请号：EP01300320.7
申请日：2001-01-15
发明人： Chao, Yong-Sheng , Zhao, Ying
CPC分类号： G02B26/0875
摘要： Apparatus for deflecting light beams tends either to be slow (electromechanical) or to have a narrow range of deflection. Here a light beam can be dynamically controlled to approach ±90° in pitch and yaw. The device comprises an initial dynamic beam deflector 14 and a compound light beam direction mapper 16. The beam direction mapper 16 includes a beam size reducer 18, a beam transmission adapter 20, and a projector 22. An initial light beam 24 from a light source 12 is deflected by a small angle θ 0 by the initial dynamic beam deflector 14. The initially deflected light beam 26 is focused by the beam size reducer 18 to a light energy spot 48 on the beam transmission adapter 20, which transfers the light spot to the projector 22. The projector 22 emits an output light beam at the far field 38 of its output space 34 with an output deflection angle θ larger than the initial deflection angle θ 0 . All components are based on classical geometrical optics and the energy of the output light beam 32 can be within an order of magnitude of that of the input light beam 24. The adaptor 20 can be, for instance, a fiber-optic plate or a positive lens assembly, and the projector a specialty sphere lens or camera-type lens system.
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7.发明公开Apparatus and method for removing scatter from an x-ray image 失效Vorrichtung und Verfahren zur Entfernung der Streuung ausRöntgenbildern
公开(公告)号：EP0782375A1
公开(公告)日：1997-07-02
申请号：EP96309554.2
申请日：1996-12-30
发明人： Chao, Yong-Sheng
CPC分类号： A61B6/482 , A61B6/06 , A61B6/4035 , A61B6/405 , A61B6/4241 , G01T1/1648 , G06T11/006 , G06T2211/408 , G21K1/025 , H05G1/60
摘要： An apparatus and method for eliminating scatter effects in x-ray imaging using two-dimensional detector arrays is disclosed. The apparatus consits of an x-ray source (14), a front two-dimensional x-ray detector (16), a beam selector (18), and a rear two-dimensional x-ray detector (26). A substantially improved dual-energy method is presented. Based on this method, the primary image of the front detector (16) is calculated from a pair of primary dual-energy images of the rear detector (26). Subsequently, the low resolution scatter image of the front detector (16) is determined and the high resolution scatter image of the front detector (16) is calculated. Embodiments of this invention provide a method for elimination of scatter and a method for dual energy x-ray imaging.
摘要翻译： 公开了一种用于消除使用二维检测器阵列的X射线成像中的散射效应的装置和方法。 该装置包括X射线源（14），前二维X射线检测器（16），光束选择器（18）和后二维X射线检测器（26）。 提出了一种基本上改进的双能方法。 基于该方法，从后检测器（26）的一对主双能图像计算前检测器（16）的主图像。 随后，确定前检测器（16）的低分辨率散射图像，并且计算前检测器（16）的高分辨率散射图像。 本发明的实施例提供了一种消除散射的方法和一种双能X射线成像方法。
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公开(公告)号：EP0782375B1
公开(公告)日：2003-04-23
申请号：EP96309554.2
申请日：1996-12-30
发明人： Chao, Yong-Sheng
CPC分类号： A61B6/482 , A61B6/06 , A61B6/4035 , A61B6/405 , A61B6/4241 , G01T1/1648 , G06T11/006 , G06T2211/408 , G21K1/025 , H05G1/60
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