-
1.发明授权Method of removing spatial response signature of computed radiography dector from image 有权从图像中去除计算机放射摄影仪的空间响应特征的方法公开(公告)号：US08855359B2
公开(公告)日：2014-10-07
申请号：US13978973
申请日：2012-01-17
申请人： Marc Cresens , Herman Van Goubergen
发明人： Marc Cresens , Herman Van Goubergen
CPC分类号： G06T5/00 , G06T5/002 , G06T2207/10116
摘要： Method of removing the spatial response signature of a detector from a computed radiography image by adaptively filtering and spatially warping the characteristic response signature of the detector prior to demodulation.
摘要翻译： 通过在解调之前自适应地滤波和空间扭曲检测器的特征响应特征来从计算的射线照相图像中去除检测器的空间响应特征的方法。
-
2.发明申请Method of Removing the Spatial Response Signature of a Two-Dimensional Computed Radiography Detector From a Computed Radiography Image. 有权从计算机放射摄影图像中去除二维计算放射检查器的空间响应特征的方法。公开(公告)号：US20130287281A1
公开(公告)日：2013-10-31
申请号：US13978973
申请日：2012-01-17
申请人： Marc Cresens , Herman Van Goubergen
发明人： Marc Cresens , Herman Van Goubergen
IPC分类号： G06T5/00
CPC分类号： G06T5/00 , G06T5/002 , G06T2207/10116
摘要： Method of removing the spatial response signature of a detector from a computed radiography image by adaptively filtering and spatially warping the characteristic response signature of the detector prior to demodulation.
摘要翻译： 通过在解调之前自适应地滤波和空间扭曲检测器的特征响应特征来从计算的射线照相图像中去除检测器的空间响应特征的方法。
-
公开(公告)号：US07538317B2
公开(公告)日：2009-05-26
申请号：US11764518
申请日：2007-06-18
申请人： Marc Cresens , Walter Exelmans
发明人： Marc Cresens , Walter Exelmans
IPC分类号： G01D18/00
CPC分类号： G01T7/005 , G01T1/2012
摘要： Each of the detectors of the inventory are subjected to an identical flat field exposure to generate a radiation mage in each of the detectors, from the radiation images the overall field distribution is determined and neutralized in the images, next the non-uniformity is calculated.
摘要翻译： 库存中的每个检测器经受相同的平场曝光以在每个检测器中产生辐射图像，从辐射图像中确定和中和整个场分布，然后计算不均匀性。
-
4.发明授权Vibration reduction for stepping motor by vector angle and vector length modulation 失效通过矢量角度和矢量长度调制对步进电机进行减振
公开(公告)号：US5659234A
公开(公告)日：1997-08-19
申请号：US375745
申请日：1995-01-20
申请人： Marc Cresens
发明人： Marc Cresens
摘要： A method is disclosed for the reduction of vibrations in a system using a stepping motor, driving parts at a constant velocity. On a test rig, the dynamic behaviour of the stepping motor in micro stepping mode is measured by a system comprising a rotation encoder. The measured data are filtered and used to compensate the unwanted speed fluctuations. In a first method, compensation is done by modification of the theoretical current-vector angles of basic micro stepping, while keeping the current-vector length constant. In a second method, first the current-vector angles are optimized, where after the current-vector lengths are optimized to correct the stepping motor for a wide range of speeds and load torques. In both methods, the stepping frequency is constant over all steps and determined by the desired angular speed of the stepping motor.
摘要翻译： 公开了一种用于使用步进电机减小系统中的振动的方法，以恒定速度驱动部件。 在试验台上，步进电机在微步进模式下的动态特性由包括旋转编码器的系统来测量。 测量的数据被过滤并用于补偿不需要的速度波动。 在第一种方法中，通过修改基本微步进的理论电流矢量角来实现补偿，同时保持电流矢量长度恒定。 在第二种方法中，首先优化电流矢量角，其中在电流矢量长度被优化以在宽范围的速度和负载转矩之间校正步进电机。 在两种方法中，步进频率在所有步骤中是恒定的，并由步进电机的期望角速度确定。
-
5.发明授权Method for neutralizing image artifacts prior to determination of signal-to-noise ratio in CR/DR radiography systems 有权在确定CR / DR射线照相系统中的信噪比之前中和图像伪像的方法公开(公告)号：US08194966B2
公开(公告)日：2012-06-05
申请号：US11958743
申请日：2007-12-18
申请人： Marc Cresens
发明人： Marc Cresens
CPC分类号： A61B6/585 , A61B6/4216 , A61B6/5205 , A61B6/583 , G01T1/2014
摘要： A method for neutralizing the non-noise correlated, multiplicative image-artifacts introduced by the X-ray exposure, the detector or the digitizer prior to the determination of the Signal-to-Noise Ratio or the (Normalized) Noise Power Spectrum in CR/DR radiography systems. This method uses statistical techniques and the photon-noise physical model to correct the raw, digital image-data obtained in the selected region of interest (roi) for evaluation during quality control (QC).
摘要翻译： 一种用于在确定CR /信号噪声比或（归一化）噪声功率谱之前中和由X射线曝光，检测器或数字化仪引入的非噪声相关乘法图像伪像的方法， DR射线照相系统。 该方法使用统计技术和光子噪声物理模型来校正在所选择的感兴趣区域（roi）中获得的原始数字图像数据，以在质量控制（QC）期间进行评估。
-
公开(公告)号：US07824103B2
公开(公告)日：2010-11-02
申请号：US12107320
申请日：2008-04-22
申请人： Marc Cresens
发明人： Marc Cresens
IPC分类号： G21K1/00
CPC分类号： G01T7/005
摘要： An apparatus and method for an X-ray dosimeter support, comprises of a material-poor support-layer, held by a frame elevated by at least one foot, comprising optimization for low back-scatter, high measurement-repeatability and ease of assembly and disassembly.
摘要翻译： 一种用于X射线剂量计支架的装置和方法，包括由不断升高至少一英尺的框架保持的材料不良支撑层，包括优化的低背散射，高测量重复性和易于组装， 拆卸。
-
公开(公告)号：US07773831B2
公开(公告)日：2010-08-10
申请号：US11379272
申请日：2006-04-19
申请人： Marc Cresens
发明人： Marc Cresens
CPC分类号： G06T3/4084 , G06T5/002 , G06T5/20 , G06T2207/10116 , G06T2207/20032 , G06T2207/30004
摘要： A method for generating an output image by reducing the size of an input image by determining for a pixel location (i,j) in the output image a corresponding areaxy in the input image, fetching the input image areaxy pixel values, calculating an output pixel value Dij for the pixel location (i,j) using a size reducing algorithm, inserting Dij in the output image and repeating the previous steps for each pixel location (i,j) in the output image. The value Di,j is obtained by adding to the lower resolution background representation A of the input image area pixel values with a value obtained by amplifying MED, representing the pixel value in the input image area that most deviates from said lower resolution background representation A, by means of a significance factor SF.
摘要翻译： 一种用于通过对输入图像中的像素位置（i，j）确定输入图像中的相应区域xy来获取输入图像区域xy像素值，计算输出像素，从而通过减小输入图像的大小来生成输出图像的方法 使用尺寸减小算法对像素位置（i，j）的值Dij，在输出图像中插入Dij并对输出图像中的每个像素位置（i，j）重复前述步骤。 通过将具有通过放大MED获得的值代表输入图像区域像素值的较低分辨率背景表示A，表示最偏离所述较低分辨率背景表示A的输入图像区域中的像素值，获得值Di，j ，通过意义因子SF。
-
公开(公告)号：US06811314B2
公开(公告)日：2004-11-02
申请号：US10441675
申请日：2003-05-20
申请人： Marc Cresens
发明人： Marc Cresens
IPC分类号： G01D1800
CPC分类号： A61B6/583
摘要： An edge phantom for assessing the sharpness response of a radiation image recording and detection system wherein the edge phantom is subjected to radiation emitted by a source of radiation to generate a radiation image and wherein the radiation image, recorded and detected by the system, is evaluated. The design of the edge phantom provides that any line outside a plane perpendicular to the edge phantom's top face, connecting the focus of the source of radiation with a point on a curved or flat lateral face of the phantom used for sharpness analysis coincides with a line part of that lateral face containing that point.
摘要翻译： 用于评估辐射图像记录和检测系统的锐度响应的边缘体模，其中边缘体模受到由辐射源发射的辐射以产生辐射图像，并且其中评估由系统记录和检测的辐射图像 。 边缘模型的设计提供了垂直于边缘幻影顶面的平面外的任何线，将辐射源的焦点与用于清晰度分析的体模的弯曲或平坦侧面上的点连接在一起 包含该点的该侧面的一部分。
-
公开(公告)号：US07629574B2
公开(公告)日：2009-12-08
申请号：US11764506
申请日：2007-06-18
申请人： Marc Cresens , Walter Exelmans
发明人： Marc Cresens , Walter Exelmans
IPC分类号： G01D18/00
CPC分类号： G01T7/005 , G01T1/2012
摘要： Each of the detectors of a detector inventory are subjected to an identical flat field exposure to generate a radiation mage in each of the detectors, from the radiation images the overall field distribution is determined and neutralized in the images, next the sensitivity is determined.
摘要翻译： 检测器库存的每个检测器经受相同的平场曝光以在每个检测器中产生辐射法，从辐射图像确定图像中的整体场分布并中和，接下来确定灵敏度。
-
公开(公告)号：US20080251708A1
公开(公告)日：2008-10-16
申请号：US11764506
申请日：2007-06-18
申请人： Marc Cresens , Walter Exelmans
发明人： Marc Cresens , Walter Exelmans
IPC分类号： G01D18/00
CPC分类号： G01T7/005 , G01T1/2012
摘要： Each of the detectors of a detector inventory are subjected to an identical flat field exposure to generate a radiation mage in each of the detectors, from the radiation images the overall field distribution is determined and neutralized in the images, next the sensitivity is determined.
摘要翻译： 检测器库存的每个检测器经受相同的平场曝光以在每个检测器中产生辐射法，从辐射图像确定图像中的整体场分布并中和，接下来确定灵敏度。
-
-
-
-
-
-
-
-
-
搜索结果
22 条记录 (耗时 0.017 秒)
