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1. 发明授权

US5835618A Uniform and non-uniform dynamic range remapping for optimum image display 失效
标题翻译：均匀和不均匀的动态范围重新映射，以实现最佳图像显示
公开(公告)号：US5835618A
公开(公告)日：1998-11-10
申请号：US722756
申请日：1996-09-27
申请人： Ming Fang , Jianzhong Qian , Helmuth Schramm
发明人： Ming Fang , Jianzhong Qian , Helmuth Schramm
IPC分类号： A61B6/00 , A61B5/055 , A61B8/00 , G06T1/00 , G06T5/00 , G06T5/40 , G09G5/36 , H04N1/407 , G06K9/36 , G06T9/00
CPC分类号： H04N1/4072 , G06T5/009 , G06T5/40 , G06T2207/20192 , G06T2207/30004
摘要： A contexture dependent dynamic range remapping system utilizes background estimation, mask generation, parameter estimation and dynamic range remapping of an original image to provide an optimum output image. The dynamic range remapping includes an additive algorithm or a multiplicative algorithm or a combination of both algorithms. The output from the algorithms could be filtered by an edge-preserving filter to provide a filtered output image. The system adaptively compresses the dynamic range of the DC and slow-varying signals in the original image significantly while preserving and enhancing fine structures.
摘要翻译：依赖于纹理的动态范围重映射系统利用原始图像的背景估计，掩模生成，参数估计和动态范围重新映射来提供最佳输出图像。动态范围重映射包括加法算法或乘法算法或两种算法的组合。算法的输出可以由边缘保留滤波器进行滤波，以提供滤波后的输出图像。系统自动压缩原始图像中的直流和慢变信号的动态范围，同时保持和增强精细结构。

2. 发明授权

US06724924B1 Brightness and contrast invariant detection of vertebra pedicles 失效
标题翻译：椎体椎弓根的亮度和对比度不变检测
公开(公告)号：US06724924B1
公开(公告)日：2004-04-20
申请号：US09638121
申请日：2000-08-14
申请人： Guo-Qing Wei , Jianzhong Qian , Helmuth Schramm
发明人： Guo-Qing Wei , Jianzhong Qian , Helmuth Schramm
IPC分类号： G06K900
CPC分类号： A61B5/103 , A61B5/7232 , A61B5/726 , A61B6/00 , G06T7/74 , G06T2207/30008
摘要： A system and method for detecting pedicle positions in an image, in accordance with the present invention, includes providing a set of feature prototypes for a plurality of pedicle positions and orientations, providing an input image to be analyzed for pedicle positions and orientations, and determining intensity curvatures for a pedicle in the input image. The intensity curvatures are transformed to determine a feature vector for the pedicle in the input image. The feature vector is correlated to the feature prototypes to determine most likely positions and orientations of the pedicle.
摘要翻译：根据本发明的用于检测图像中的椎弓根位置的系统和方法包括提供用于多个椎弓根位置和取向的一组特征原型，提供待分析椎弓根位置和取向的输入图像，以及确定输入图像中椎弓根的强度曲率。变形强度曲率以确定输入图像中的椎弓根的特征向量。特征向量与特征原型相关，以确定椎弓根的最可能的位置和取向。

3. 发明授权

US07010151B2 Endplate detection in digital radiography by dynamic programming using both local and global constraints 失效
标题翻译：通过使用局部和全局约束的动态规划在数字射线照相中进行终板检测
公开(公告)号：US07010151B2
公开(公告)日：2006-03-07
申请号：US10016096
申请日：2001-12-10
申请人： Guo-Qing Wei , Jianzhong Qian , Helmuth Schramm
发明人： Guo-Qing Wei , Jianzhong Qian , Helmuth Schramm
IPC分类号： G06K9/00
CPC分类号： G06T7/12 , G06T7/73 , G06T2207/10116 , G06T2207/30012 , Y10S128/922
摘要： Disclosed is a method and apparatus for detecting endplates of vertebra, comprising the steps of providing a filtered curvature map derived from filtering an intensity curvature map of a spine image in a direction relative to a spine axis, computing minimum and maximum curvature projections for each point along said spine axis, at a plurality of points on said spine axis, computing a score from said curvature projections, said score indicating the likelihood that the point is located on an endplate, and subjecting said score calculation to at least one of the following constraints (1) that the angle between neighboring endplates not exceed a certain value, and (2) that the variation in height of vertebra of said spine image should satisfy a global model.
摘要翻译：公开了一种用于检测椎骨终板的方法和装置，包括以下步骤：提供从相对于脊柱轴的方向过滤脊柱图像的强度曲率图的衍生的滤波曲率图，计算每个点的最小和最大曲率投影沿着所述脊柱轴线，在所述脊柱轴线上的多个点处，计算来自所述曲率投影的分数，所述分数指示所述点位于终板上的可能性，并且对所述分数计算进行至少一个以下约束（1）相邻终板之间的角度不超过一定值，（2）所述脊柱图像的椎体高度变化应满足全局模型。

4. 发明申请

US20050196029A1 Endplate detection in digital radiography by dynamic programming using both local and global constraints 失效
标题翻译：通过使用局部和全局约束的动态规划在数字射线照相中进行终板检测
公开(公告)号：US20050196029A1
公开(公告)日：2005-09-08
申请号：US10016096
申请日：2001-12-10
申请人： Guo-Qing Wei , Jianzhong Qian , Helmuth Schramm
发明人： Guo-Qing Wei , Jianzhong Qian , Helmuth Schramm
IPC分类号： G06K9/00
CPC分类号： G06T7/12 , G06T7/73 , G06T2207/10116 , G06T2207/30012 , Y10S128/922
摘要： Disclosed is a method and apparatus for detecting endplates of vertebra, comprising the steps of providing a filtered curvature map derived from filtering an intensity curvature map of a spine image in a direction relative to a spine axis, computing minimum and maximum curvature projections for each point along said spine axis, at a plurality of points on said spine axis, computing a score from said curvature projections, said score indicating the likelihood that the point is located on an endplate, and subjecting said score calculation to at least one of the following constraints (1) that the angle between neighboring endplates not exceed a certain value, and (2) that the variation in height of vertebra of said spine image should satisfy a global model.
摘要翻译：公开了一种用于检测椎骨终板的方法和装置，包括以下步骤：提供从相对于脊柱轴的方向过滤脊柱图像的强度曲率图的衍生的滤波曲率图，计算每个点的最小和最大曲率投影沿着所述脊柱轴线，在所述脊柱轴线上的多个点处，计算来自所述曲率投影的分数，所述分数指示所述点位于终板上的可能性，并且对所述分数计算进行至少一个以下约束（1）相邻终板之间的角度不超过一定值，（2）所述脊柱图像的椎体高度变化应满足全局模型。

5. 发明授权

US06628749B2 Systems and methods for intensity correction in CR (computed radiography) mosaic image composition 有权
公开(公告)号：US06628749B2
公开(公告)日：2003-09-30
申请号：US10255408
申请日：2002-09-26
申请人： Guo-Qing Wei , Jianzhong Qian , Helmuth Schramm , Carol Novak
发明人： Guo-Qing Wei , Jianzhong Qian , Helmuth Schramm , Carol Novak
IPC分类号： G01N2304
CPC分类号： G06T5/008 , G06T2207/10116
摘要： Systems and methods for correcting the image intensity of under-exposed regions of CR (computed radiography) images for mosaic composition. In one aspect, a method for generating a mosaic CR image comprises acquiring a set of CR images and processing each CR image to detect an under-exposed region in the CR image. If an under-exposed region is detected, the CR image is separated into an under-exposed region and normal exposure region. The image intensity of the under-exposed region is then adjusted to be substantially similar to, or as close as possible to, the image intensity of the normal exposure region of the CR image using nonlinear enhancement and/or linear transformation techniques. The intensity corrected CR images are then combined in a mosaic image.

6. 发明授权

US06674883B1 System and method for the detection of anatomic landmarks for total hip replacement 失效
标题翻译：用于检测全髋关节置换的解剖标志物的系统和方法
公开(公告)号：US06674883B1
公开(公告)日：2004-01-06
申请号：US09638122
申请日：2000-08-14
申请人： Guo-Qing Wei , Jianzhong Qian , Helmuth Schramm
发明人： Guo-Qing Wei , Jianzhong Qian , Helmuth Schramm
IPC分类号： G06K900
CPC分类号： A61F2/4657 , A61B5/103 , A61B5/4504 , A61B5/4528 , A61B34/10 , A61B90/36 , A61B2090/363 , A61F2/30942 , A61F2/36
摘要： A system and method for automatically detecting anatomical landmarks in a radiographic image, preferably for total hip replacement applications, in accordance with the present invention, provides a region of interest of the image, and determines a first landmark in the region of interest by computing an intensity ridge map. A second landmark is determined in the region of interest based on a position and orientation of the first landmark, and measurements are performed on the image based on positions of the first and second landmarks.
摘要翻译：根据本发明的用于自动检测放射照相图像中的解剖学标记的系统和方法，优选地用于全髋关节置换应用，提供了图像的感兴趣区域，并且通过计算图像的区域来确定感兴趣区域中的第一标记强度脊图。基于第一地标的位置和取向在感兴趣的区域中确定第二地标，并且基于第一和第二地标的位置对图像执行测量。

7. 发明授权

US5771318A Adaptive edge-preserving smoothing filter 失效
标题翻译：自适应边缘保持平滑滤波器
公开(公告)号：US5771318A
公开(公告)日：1998-06-23
申请号：US672194
申请日：1996-06-27
申请人： Ming Fang , Jianzhong Qian
发明人： Ming Fang , Jianzhong Qian
IPC分类号： G06T5/20 , G06T5/00
CPC分类号： G06T5/20
摘要： An adaptive edge-preserving smoothing filter effectively reduces noise levels while preserving fine structures in data. The behavior of the filter is controlled easily by two control parameters. To adaptively control the behavior of the filter, the control parameter, .alpha., can be set as a function of the local directional variances. The control parameter, .beta., can be set as a function of all of the directional variances and directional means. The filter includes; a compute means which receives the filter window size, the number of filter directions and input data, adaptive weighting parameter map means which receives the control parameter, .alpha., adaptive weighting process means, adaptive combination parameter map means which receives the control parameter, .beta., and final compute means which provides the filtered output data.
摘要翻译：自适应边缘保持平滑滤波器有效地降低噪声水平，同时保留数据中的精细结构。过滤器的行为由两个控制参数容易控制。为了自适应地控制过滤器的行为，可以将控制参数α设置为局部方向方差的函数。控制参数β可以设置为所有方向方向和方向方式的函数。过滤器包括接收滤波器窗口尺寸，滤波器方向数量和输入数据的计算装置，接收控制参数的自适应加权参数映射装置，α，自适应加权处理装置，接收控制参数β的自适应组合参数映射装置，以及提供经滤波的输出数据的最终计算装置。

8. 发明授权

US07840044B2 Method and system for liver lobe segmentation and pre-operative surgical planning 有权
标题翻译：肝叶分割和术前手术计划的方法和系统
公开(公告)号：US07840044B2
公开(公告)日：2010-11-23
申请号：US11590904
申请日：2006-11-01
申请人： Feng Ma , Guo-Qing Wei , Li Fan , Cheng-Chung Liang , Jianzhong Qian , Xiaolan Zeng
发明人： Feng Ma , Guo-Qing Wei , Li Fan , Cheng-Chung Liang , Jianzhong Qian , Xiaolan Zeng
IPC分类号： G06K9/00 , A61B5/05
CPC分类号： G06T19/20 , A61B2034/101 , A61B2090/365 , G06T7/0012 , G06T7/12 , G06T7/149 , G06T2207/10081 , G06T2207/20016 , G06T2207/20092 , G06T2207/20156 , G06T2207/30056 , G06T2207/30096 , G06T2207/30101 , G06T2210/41 , G06T2219/2016 , G06T2219/2021
摘要： A method and system is provided for image segmentation for liver objects. Segmentation is performed to obtain a first set of objects relating to liver. More than one types in association with one of the first set of objects are identified. Landmarks are identified based on the segmented first set of objects or the different types of one of the first set of objects. A second set of objects including liver lobes are segmented based on the landmarks.
摘要翻译：为肝脏物体的图像分割提供了一种方法和系统。执行分割以获得与肝脏相关的第一组对象。识别与第一组对象中的一个相关联的多于一种的类型。基于分割的第一组对象或不同类型的第一组对象来标识地标。第二组物体，包括肝叶根据地标分段。

9. 发明授权

US07203349B2 Bronchial wall thickening recognition for reduced false-positives in pulmonary nodule detection 失效
标题翻译：支气管壁增厚识别减少肺结核检测中的假阳性
公开(公告)号：US07203349B2
公开(公告)日：2007-04-10
申请号：US10059848
申请日：2002-01-29
申请人： Li Zhang , Li Fan , Jianzhong Qian , Guo-Qing Wei
发明人： Li Zhang , Li Fan , Jianzhong Qian , Guo-Qing Wei
IPC分类号： G06K9/00
CPC分类号： G06T7/0012 , G06T2207/30061 , Y10S128/922
摘要： A system and method for automatically reducing false-positive nodule candidates associated with airways includes receiving a nodule candidate, testing for airway cavities connected to the candidate, and recognizing the candidate as a false-positive nodule candidate if it is connected to an airway cavity; where the testing may include perpendicular testing for airways that are relatively perpendicular to an examination plane and parallel testing for airways that are relatively parallel to an examination plane.
摘要翻译：用于自动减少与气道相关联的假阳性结节候选的系统和方法包括接收结节候选者，连接到候选者的气道腔的测试，以及如果候选者连接到气道腔，则将候选识别为假阳性结节候选物; 其中测试可以包括相对垂直于检查平面的气道的垂直测试以及与检查平面相对平行的气道的平行测试。

10. 发明申请

US20070055455A1 Methods for interactive liver disease diagnosis 有权
标题翻译：交互性肝病诊断方法
公开(公告)号：US20070055455A1
公开(公告)日：2007-03-08
申请号：US11474505
申请日：2006-06-26
申请人： Guo-Qing Wei , Li Fan , Feng Ma , Jianzhong Qian , Cheng-Chung Liang , Xiaolan Zeng
发明人： Guo-Qing Wei , Li Fan , Feng Ma , Jianzhong Qian , Cheng-Chung Liang , Xiaolan Zeng
IPC分类号： G06F19/00
CPC分类号： G06T7/0012 , G06F19/321 , G06T2207/30056 , G16H30/20 , G16H40/63 , G16H50/50
摘要： A method and system provided for interactive liver data processing. A vessel system with a plurality of vessel branches is obtained. Centerlines for the vessel branches are extracted and used to construct a graph representation of the vessel system. Each vessel branch in the vessel system can be labeled based on the graphic representation.
摘要翻译：提供交互式肝脏数据处理的方法和系统。获得具有多个血管分支的血管系统。提取血管分支的中心线并用于构建血管系统的图表。容器系统中的每个血管分支可以基于图形表示来标记。

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