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1. 发明申请

US20110116693A1 METHOD AND SYSTEM FOR CORRECTION OF FLUOROSCOPE IMAGE DISTORTION 有权
标题翻译：用于校正荧光图像失真的方法和系统
公开(公告)号：US20110116693A1
公开(公告)日：2011-05-19
申请号：US13014579
申请日：2011-01-26
申请人： Dun Alex Li , Joseph Casey Crager , Peter Kelley , Andrey Litvin
发明人： Dun Alex Li , Joseph Casey Crager , Peter Kelley , Andrey Litvin
IPC分类号： G06K9/00
CPC分类号： H01J47/001 , Y10S430/168
摘要： Certain embodiments of the present invention provide for a system and method for modeling S-distortion in an image intensifier. In an embodiment, the method may include identifying a reference coordinate on an input screen of the image intensifier. The method also includes computing a set of charged particle velocity vectors. The method also includes computing a set of magnetic field vectors. The method also includes computing the force exerted on the charged particle in an image intensifier. Certain embodiments of the present invention include an iterative method for calibrating an image acquisition system with an analytic S-distortion model. In an embodiment, the method may include comparing the difference between the measured fiducial shadow positions and the model fiducial positions with a threshold value. If the difference is less than the threshold value, the optical distortion parameters are used for linearizing the set of acquired images.
摘要翻译：本发明的某些实施例提供了用于对图像增强器中的S失真进行建模的系统和方法。在一个实施例中，该方法可以包括识别图像增强器的输入屏幕上的参考坐标。该方法还包括计算一组带电粒子速度矢量。该方法还包括计算一组磁场矢量。该方法还包括计算在图像增强器中施加在带电粒子上的力。本发明的某些实施例包括用分析S失真模型校准图像采集系统的迭代方法。在一个实施例中，该方法可以包括将所测量的基准阴影位置和模型基准位置之间的差与阈值进行比较。如果差值小于阈值，则光学失真参数用于线性化所获取的图像集合。

2. 发明授权

US07957582B2 Method and system for correction of fluoroscope image distortion 有权
标题翻译：荧光图像畸变校正方法及系统
公开(公告)号：US07957582B2
公开(公告)日：2011-06-07
申请号：US11766455
申请日：2007-06-21
申请人： Dun Alex Li , Joseph Casey Crager , Peter Kelley , Andrey Litvin
发明人： Dun Alex Li , Joseph Casey Crager , Peter Kelley , Andrey Litvin
IPC分类号： G06K9/00
CPC分类号： H01J47/001 , Y10S430/168
摘要： Certain embodiments of the present invention provide for a system and method for modeling S-distortion in an image intensifier. In an embodiment, the method may include identifying a reference coordinate on an input screen of the image intensifier. The method also includes computing a set of charged particle velocity vectors. The method also includes computing a set of magnetic field vectors. The method also includes computing the force exerted on the charged particle in an image intensifier. Certain embodiments of the present invention include an iterative method for calibrating an image acquisition system with an analytic S-distortion model. In an embodiment, the method may include comparing the difference between the measured fiducial shadow positions and the model fiducial positions with a threshold value. If the difference is less than the threshold value, the optical distortion parameters are used for linearizing the set of acquired images.
摘要翻译：本发明的某些实施例提供了用于对图像增强器中的S失真进行建模的系统和方法。在一个实施例中，该方法可以包括识别图像增强器的输入屏幕上的参考坐标。该方法还包括计算一组带电粒子速度矢量。该方法还包括计算一组磁场矢量。该方法还包括计算在图像增强器中施加在带电粒子上的力。本发明的某些实施例包括用分析S失真模型校准图像采集系统的迭代方法。在一个实施例中，该方法可以包括将所测量的基准阴影位置和模型基准位置之间的差与阈值进行比较。如果差值小于阈值，则光学失真参数用于线性化所获取的图像集合。

3. 发明申请

US20080317333A1 METHOD AND SYSTEM FOR CORRECTION OF FLUOROSCOPE IMAGE DISTORTION 有权
标题翻译：用于校正荧光图像失真的方法和系统
公开(公告)号：US20080317333A1
公开(公告)日：2008-12-25
申请号：US11766455
申请日：2007-06-21
申请人： Dun Alex Li , Joseph Casey Crager , Peter Kelley , Andrey Litvin
发明人： Dun Alex Li , Joseph Casey Crager , Peter Kelley , Andrey Litvin
IPC分类号： H01J47/00
CPC分类号： H01J47/001 , Y10S430/168
摘要： Certain embodiments of the present invention provide for a system and method for modeling S-distortion in an image intensifier. In an embodiment, the method may include identifying a reference coordinate on an input screen of the image intensifier. The method also includes computing a set of charged particle velocity vectors. The method also includes computing a set of magnetic field vectors. The method also includes computing the force exerted on the charged particle in an image intensifier. Certain embodiments of the present invention include an iterative method for calibrating an image acquisition system with an analytic S-distortion model. In an embodiment, the method may include comparing the difference between the measured fiducial shadow positions and the model fiducial positions with a threshold value. If the difference is less than the threshold value, the optical distortion parameters are used for linearizing the set of acquired images.
摘要翻译：本发明的某些实施例提供了用于对图像增强器中的S失真进行建模的系统和方法。在一个实施例中，该方法可以包括识别图像增强器的输入屏幕上的参考坐标。该方法还包括计算一组带电粒子速度矢量。该方法还包括计算一组磁场矢量。该方法还包括计算在图像增强器中施加在带电粒子上的力。本发明的某些实施例包括用分析S失真模型校准图像采集系统的迭代方法。在一个实施例中，该方法可以包括将所测量的基准阴影位置和模型基准位置之间的差与阈值进行比较。如果差值小于阈值，则光学失真参数用于线性化所获取的图像集合。

4. 发明授权

US07986826B2 Method and system for correction of fluoroscope image distortion 有权
公开(公告)号：US07986826B2
公开(公告)日：2011-07-26
申请号：US13014579
申请日：2011-01-26
申请人： Dun Alex Li , Joseph Casey Crager , Peter Kelley , Andrey Litvin
发明人： Dun Alex Li , Joseph Casey Crager , Peter Kelley , Andrey Litvin
IPC分类号： G06K9/00
CPC分类号： H01J47/001 , Y10S430/168
摘要： Certain embodiments of the present invention provide for a system and method for modeling S-distortion in an image intensifier. In an embodiment, the method may include identifying a reference coordinate on an input screen of the image intensifier. The method also includes computing a set of charged particle velocity vectors. The method also includes computing a set of magnetic field vectors. The method also includes computing the force exerted on the charged particle in an image intensifier. Certain embodiments of the present invention include an iterative method for calibrating an image acquisition system with an analytic S-distortion model. In an embodiment, the method may include comparing the difference between the measured fiducial shadow positions and the model fiducial positions with a threshold value. If the difference is less than the threshold value, the optical distortion parameters are used for linearizing the set of acquired images.

5. 发明授权

US08442619B2 System and method for detecting errors in position tracking systems used for medical applications 有权
标题翻译：用于检测用于医疗应用的位置跟踪系统错误的系统和方法
公开(公告)号：US08442619B2
公开(公告)日：2013-05-14
申请号：US11468481
申请日：2006-08-30
申请人： Dun Alex Li , Joseph Casey Crager , Douglas Karl Johnson
发明人： Dun Alex Li , Joseph Casey Crager , Douglas Karl Johnson
IPC分类号： A61B5/00
CPC分类号： A61B34/20 , A61B2034/2051 , A61B2090/3975 , G06F19/00 , G16H50/50
摘要： A system and method for identifying errors while tracking instrument navigations is enclosed. The method may include assigning a plurality of virtual points to a plurality of sensors. At least one of the virtual points may be a non-fixed virtual point. The assignment of virtual points to sensors may be determined based on the medical instrument, or the medical instrument attachment, being used. Virtual point locations may be determined for the non-fixed virtual point. The locations of the non-fixed virtual point may be determined based on the medical instrument, or the medical instrument attachment, being used. The vector values for vectors terminating at the non-fixed virtual point may be adjusted. The field integrity values for the virtual points may be computed. If a field integrity value is greater than a threshold value, an error signal may be communicated.
摘要翻译：附有跟踪仪器导航时识别错误的系统和方法。该方法可以包括将多个虚拟点分配给多个传感器。虚拟点中的至少一个可以是非固定虚拟点。可以基于正在使用的医疗器械或医疗仪器附件来确定虚拟点到传感器的分配。可以为非固定虚拟点确定虚拟点位置。非固定虚拟点的位置可以基于所使用的医疗器械或医疗仪器附件来确定。可以调整终止于非固定虚拟点的向量的向量值。可以计算虚拟点的字段完整性值。如果场完整性值大于阈值，则可以传送错误信号。

6. 发明申请

US20080121703A1 SYSTEM AND METHOD FOR DETECTING ERRORS IN POSITION TRACKING SYSTEMS USED FOR MEDICAL APPLICATIONS 有权
标题翻译：用于检测用于医疗应用的位置跟踪系统中的错误的系统和方法
公开(公告)号：US20080121703A1
公开(公告)日：2008-05-29
申请号：US11468481
申请日：2006-08-30
申请人： Dun Alex Li , Joseph Casey Crager , Douglas Karl Johnson
发明人： Dun Alex Li , Joseph Casey Crager , Douglas Karl Johnson
IPC分类号： G06F19/00
CPC分类号： A61B34/20 , A61B2034/2051 , A61B2090/3975 , G06F19/00 , G16H50/50
摘要： A system and method for identifying errors while tracking instrument navigations is enclosed. The method may include assigning a plurality of virtual points to a plurality of sensors. At least one of the virtual points may be a non-fixed virtual point. The assignment of virtual points to sensors may be determined based on the medical instrument, or the medical instrument attachment, being used. Virtual point locations may be determined for the non-fixed virtual point. The locations of the non-fixed virtual point may be determined based on the medical instrument, or the medical instrument attachment, being used. The vector values for vectors terminating at the non-fixed virtual point may be adjusted. The field integrity values for the virtual points may be computed. If a field integrity value is greater than a threshold value, an error signal may be communicated.
摘要翻译：附有跟踪仪器导航时识别错误的系统和方法。该方法可以包括将多个虚拟点分配给多个传感器。虚拟点中的至少一个可以是非固定虚拟点。可以基于正在使用的医疗器械或医疗仪器附件来确定虚拟点到传感器的分配。可以为非固定虚拟点确定虚拟点位置。非固定虚拟点的位置可以基于所使用的医疗器械或医疗仪器附件来确定。可以调整终止于非固定虚拟点的向量的向量值。可以计算虚拟点的字段完整性值。如果场完整性值大于阈值，则可以传送错误信号。

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