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公开(公告)号：US20090232348A1
公开(公告)日：2009-09-17
申请号：US12199333
申请日：2008-08-27
IPC分类号： G06K9/00
CPC分类号： G06K9/00 , G06T7/12 , G06T2207/10081 , G06T2207/30112
摘要： Techniques and systems for segmenting one or more objects in a subject image resulting from subjecting one or more objects to imaging using an imaging apparatus are disclosed, such that limitations of image noise, object proximity, image intensity variations, shape complexity, and/or computational resources may be mitigated. Merely border edges of objects in a subject image can be generated, for example, by using edge detection and discarding interior edges. Geometric difference values of the identified boundaries of the objects in the subject image can be calculated. One or more transitions between objects can be identified by using the geometric difference values, for example, which may result in data that represents a location in the image of an object to be segmented.
摘要翻译： 公开了用于分割由成像设备使一个或多个物体进行成像而导致的被摄体图像中的一个或多个物体的技术和系统，使得图像噪声，物体接近度，图像强度变化，形状复杂度和/或计算 资源可能会减轻。 例如，可以通过使用边缘检测和废弃内部边缘来仅生成被摄体图像中的物体的边缘。 可以计算被摄体图像中物体的识别边界的几何差值。 可以通过使用几何差值来识别对象之间的一个或多个转换，例如，可以导致表示待分割对象的图像中的位置的数据。
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公开(公告)号：US08311268B2
公开(公告)日：2012-11-13
申请号：US12199333
申请日：2008-08-27
IPC分类号： G06K9/00
CPC分类号： G06K9/00 , G06T7/12 , G06T2207/10081 , G06T2207/30112
摘要： Techniques and systems for segmenting one or more objects in a subject image resulting from subjecting one or more objects to imaging using an imaging apparatus are disclosed, such that limitations of image noise, object proximity, image intensity variations, shape complexity, and/or computational resources may be mitigated. Merely border edges of objects in a subject image can be generated, for example, by using edge detection and discarding interior edges. Geometric difference values of the identified boundaries of the objects in the subject image can be calculated. One or more transitions between objects can be identified by using the geometric difference values, for example, which may result in data that represents a location in the image of an object to be segmented.
摘要翻译： 公开了用于分割由成像设备使一个或多个物体进行成像而导致的被摄体图像中的一个或多个物体的技术和系统，使得图像噪声，物体接近度，图像强度变化，形状复杂度和/或计算 资源可能会减轻。 例如，可以通过使用边缘检测和废弃内部边缘来仅生成被摄体图像中的物体的边缘。 可以计算被摄体图像中物体的识别边界的几何差值。 可以通过使用几何差值来识别对象之间的一个或多个转换，例如，可以导致表示待分割对象的图像中的位置的数据。
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公开(公告)号：US08548252B2
公开(公告)日：2013-10-01
申请号：US12864645
申请日：2008-07-31
CPC分类号： G06T11/60 , G06T7/70 , G06T11/005 , G06T2207/10081 , G06T2207/30112 , G06T2207/30232
摘要： One or more techniques and/or systems for detecting edges in images of objects subjected to imaging using imaging apparatus are disclosed, such that the effect of image noise on the edge detection can be mitigated. Ratios of intensity values (e.g., signal values) for a subject region (e.g., a pixel) and respective adjacent regions are determined. An adaptive threshold value is determined for respective adjacent region pairs. The ratio value is compared to the adaptive threshold value for respective adjacent region pairs, to determine whether an edge is present between the respective adjacent region pairs.
摘要翻译： 公开了一种或多种用于检测使用成像装置进行成像的物体的图像中的边缘的技术和/或系统，使得可以减轻图像噪声对边缘检测的影响。 确定对象区域（例如，像素）和各个相邻区域的强度值（例如，信号值）的比率。 为各个相邻区域对确定自适应阈值。 将比值与各个相邻区域对的自适应阈值进行比较，以确定边缘是否存在于相应的相邻区域对之间。
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公开(公告)号：US08942411B2
公开(公告)日：2015-01-27
申请号：US12864647
申请日：2008-06-30
CPC分类号： G06T11/60 , G06T7/70 , G06T11/005 , G06T2207/10081 , G06T2207/30112 , G06T2207/30232
摘要： One or more techniques and/or systems for combining images of objects are disclosed where an image of a first object is to be inserted into an image of a second object in such a manner as to make the insertion substantially undetectable by a human observer of the combined image. An object generator generates a substantially artifact free image of a first object. An object locator orients the first object image according to a desired insertion point in a second object image. A forward projector converts the first object image into projection space data of the first object, and a combiner combines the first object projection space data with the second object projection space data. The combined projection space data is converted to image space data by a reconstructor, and the resulting combined image space data can be displayed on a monitor for human observation.
摘要翻译： 公开了用于组合对象的图像的一个或多个技术和/或系统，其中第一对象的图像将被插入到第二对象的图像中，使得使得插入件的人的观察者基本上不可检测到 组合图像。 对象生成器生成第一对象的基本上无伪影的图像。 对象定位器根据第二对象图像中的期望的插入点来定向第一对象图像。 前投影机将第一物体图像转换为第一物体的投影空间数据，并且组合器将第一对象投影空间数据与第二对象投影空间数据组合。 组合的投影空间数据由重构器转换成图像空间数据，并且所得到的组合图像空间数据可以显示在监视器上用于人类观察。
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公开(公告)号：US20110033118A1
公开(公告)日：2011-02-10
申请号：US12864645
申请日：2008-07-31
IPC分类号： G06K9/48
CPC分类号： G06T11/60 , G06T7/70 , G06T11/005 , G06T2207/10081 , G06T2207/30112 , G06T2207/30232
摘要： One or more techniques and/or systems for detecting edges in images of objects subjected to imaging using imaging apparatus are disclosed, such that the effect of image noise on the edge detection can be mitigated. Ratios of intensity values (e.g., signal values) for a subject region (e.g., a pixel) and respective adjacent regions are determined. An adaptive threshold value is determined for respective adjacent region pairs. The ratio value is compared to the adaptive threshold value for respective adjacent region pairs, to determine whether an edge is present between the respective adjacent region pairs.
摘要翻译： 公开了一种或多种用于检测使用成像装置进行成像的物体的图像中的边缘的技术和/或系统，使得可以减轻图像噪声对边缘检测的影响。 确定对象区域（例如，像素）和各个相邻区域的强度值（例如，信号值）的比率。 为各个相邻区域对确定自适应阈值。 将比值与各个相邻区域对的自适应阈值进行比较，以确定边缘是否存在于相应的相邻区域对之间。
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公开(公告)号：US09121957B2
公开(公告)日：2015-09-01
申请号：US13123833
申请日：2008-10-14
申请人： Ram C. Naidu , Chitra Subramanian , Sergey B. Simanovsky , Zhengrong Ying , Dong-Yueh Liang , Douglas Q. Abraham
发明人： Ram C. Naidu , Chitra Subramanian , Sergey B. Simanovsky , Zhengrong Ying , Dong-Yueh Liang , Douglas Q. Abraham
IPC分类号： G01V5/00
CPC分类号： G01V5/0041 , G01V5/0016 , G01V5/005
摘要： Radiation flux can be adjusted “on the fly” as an object (204) is being scanned in a security examination apparatus. Adjustments are made to the radiation flux based upon radiation incident on a first radiation detector (226) in an upstream portion (233) of an examination region. The object under examination is thus exposed to different radiation flux in coordination with a downstream motion (235) of the object relative to a second radiation detector (228). The radiation flux is adjusted so that a sufficient number of x-rays (that traverse the object) are incident on the second radiation detector. Images of the object can then be generated based upon data from the second radiation detector, where these images are thus of a desired/higher quality.
摘要翻译： 随着物体（204）在安全检查装置中被扫描，可以“飞行地”调整辐射通量。 基于入射到检查区域的上游部分（233）中的第一辐射检测器（226）上的辐射对辐射通量进行调整。 因此，被检查物体与物体相对于第二辐射检测器（228）的下游运动（235）协调地暴露于不同的辐射通量。 调整辐射通量使得足够数量的X射线（穿过物体）入射到第二辐射探测器上。 然后可以基于来自第二辐射检测器的数据生成对象的图像，其中这些图像因此具有期望/更高质量。
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公开(公告)号：US20110085695A1
公开(公告)日：2011-04-14
申请号：US12864647
申请日：2008-06-30
IPC分类号： G06K9/00
CPC分类号： G06T11/60 , G06T7/70 , G06T11/005 , G06T2207/10081 , G06T2207/30112 , G06T2207/30232
摘要： One or more techniques and/or systems for combining images of objects are disclosed where an image of a first object is to be inserted into an image of a second object in such a manner as to make the insertion substantially undetectable by a human observer of the combined image. An object generator generates a substantially artifact free image of a first object. An object locator orients the first object image according to a desired insertion point in a second object image. A forward projector converts the first object image into projection space data of the first object, and a combiner combines the first object projection space data with the second object projection space data. The combined projection space data is converted to image space data by a reconstructor, and the resulting combined image space data can be displayed on a monitor for human observation.
摘要翻译： 公开了用于组合对象的图像的一个或多个技术和/或系统，其中第一对象的图像将被插入到第二对象的图像中，使得使得插入件的人的观察者基本上不可检测到 组合图像。 对象生成器生成第一对象的基本上无伪影的图像。 对象定位器根据第二对象图像中的期望的插入点来定向第一对象图像。 前投影机将第一物体图像转换为第一物体的投影空间数据，并且组合器将第一对象投影空间数据与第二对象投影空间数据组合。 组合的投影空间数据由重构器转换成图像空间数据，并且所得到的组合图像空间数据可以显示在监视器上用于人类观察。
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公开(公告)号：US20110200167A1
公开(公告)日：2011-08-18
申请号：US13123833
申请日：2008-10-14
申请人： Ram C. Naidu , Chitra Subramanian , Sergey B. Simanovsky , Zhengrong Ying , Dong-Yueh Liang , Douglas Q. Abraham
发明人： Ram C. Naidu , Chitra Subramanian , Sergey B. Simanovsky , Zhengrong Ying , Dong-Yueh Liang , Douglas Q. Abraham
CPC分类号： G01V5/0041 , G01V5/0016 , G01V5/005
摘要： Radiation flux can be adjusted “on the fly” as an object (204) is being scanned in a security examination apparatus. Adjustments are made to the radiation flux based upon radiation incident on a first radiation detector (226) in an upstream portion (233) of an examination region. The object under examination is thus exposed to different radiation flux in coordination with a downstream motion (235) of the object relative to a second radiation detector (228). The radiation flux is adjusted so that a sufficient number of x-rays (that traverse the object) are incident on the second radiation detector. Images of the object can then be generated based upon data from the second radiation detector, where these images are thus of a desired/higher quality.
摘要翻译： 随着物体（204）在安全检查装置中被扫描，可以“飞行地”调整辐射通量。 基于入射到检查区域的上游部分（233）中的第一辐射检测器（226）上的辐射对辐射通量进行调整。 因此，被检查物体与物体相对于第二辐射检测器（228）的下游运动（235）协调地暴露于不同的辐射通量。 调整辐射通量使得足够数量的X射线（穿过物体）入射到第二辐射探测器上。 然后可以基于来自第二辐射检测器的数据生成对象的图像，其中这些图像因此具有期望/更高质量。
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9.发明授权公开(公告)号：US07151817B1
公开(公告)日：2006-12-19
申请号：US11224567
申请日：2005-09-12
申请人： Douglas Q. Abraham , Eric N. Finck , David Schafer
发明人： Douglas Q. Abraham , Eric N. Finck , David Schafer
IPC分类号： G01N23/04
CPC分类号： G01N23/046 , G01N2223/419 , G01V5/0016
摘要： Arrangements of X-ray inspection systems are described. An X-ray inspection system may include a shielded housing with a tunnel passageway and entrance and exit ports. The system may include an X-ray inspection station defining a rectilinear coordinate system, an X-ray source, and a detection system for generating images of articles that are located in the inspection station. A conveyor assembly may be included. A plurality of flexible X-ray attenuating, spaced-apart, hanging strips may be distributed within the shielded housing between the ports and across the entire tunnel passageway. The X-ray inspection system may include at least one curtain of flexible X-ray attenuating hanging strips. Each curtain may include a plurality of sets of contiguous strips, the strips of each set being of equal length and distributed across the tunnel passageway. The strips of at least one set are shorter than the strips of at least one other set.
摘要翻译： 描述了X射线检查系统的安排。 X射线检查系统可以包括具有隧道通道和入口和出口的屏蔽壳体。 该系统可以包括定义直线坐标系的X射线检查站，X射线源和用于产生位于检查台中的物品的图像的检测系统。 可以包括输送机组件。 多个柔性X射线衰减，间隔开的悬挂条可以在屏蔽壳体内分布在端口之间并穿过整个隧道通道。 X射线检查系统可以包括至少一个柔性X射线衰减悬挂条的帘幕。 每个帘幕可以包括多组连续的条，每组的条具有相同的长度并分布在隧道通道上。 至少一个组的条带比至少一个其他组的条带短。
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10.发明授权Data acquisition system for generating accurate projection data in a CT scanner 失效用于在CT扫描仪中生成精确投影数据的数据采集系统
公开(公告)号：US5991358A
公开(公告)日：1999-11-23
申请号：US1863
申请日：1997-12-31
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , Y10S378/901
摘要： A data acquisition system for use in a CT scanner comprises an analog-to-digital converter for generating digital signals in response to analog signals representative of projection data taken at a relatively constant sampling rate; and an interpolation filter for generating projection data for a plurality of predetermined projection angles as a function of the digital signals irrespective of the sampling rate.
摘要翻译： 用于CT扫描仪的数据采集系统包括一个模拟 - 数字转换器，用于响应于代表以相对恒定的采样速率拍摄的投影数据的模拟信号产生数字信号; 以及插值滤波器，用于根据数字信号产生用于多个预定投影角度的投影数据，而与采样率无关。
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