公开(公告)号：US20080059794A1

公开(公告)日：2008-03-06

申请号：US11515877

申请日：2006-09-06

申请人： Yogesh Nagappa ,  Romain Moreau-Gobard

发明人： Yogesh Nagappa ,  Romain Moreau-Gobard

IPC分类号： H04L9/00

CPC分类号： G06F21/6209 ,  G06F2221/2141

摘要： A method of secure file conversion is disclosed. The method includes storing a decrypted version of a previously encrypted file, the encryption and decryption occurring using public key infrastructure, in an allotted memory location of a memory for which read-only access to the stored decrypted file is provided. Next, the memory location is monitored for an attempt to access at least one memory location other than the allotted location. Finally, a file format of the stored decrypted file is converted, the conversion being aborted upon detecting attempt to access at least one memory location other than the allotted memory location. A converter is further disclosed.

摘要翻译： 公开了一种安全文件转换的方法。 该方法包括将先前加密的文件的解密版本，使用公共密钥基础设施发生的加密和解密存储在提供给所存储的解密文件的只读访问的存储器的分配的存储器位置中。 接下来，监视存储器位置以尝试访问除了所分配的位置之外的至少一个存储器位置。 最后，存储的解密文件的文件格式被转换，当检测到访问至少一个除了所分配的存储器位置之外的存储器位置的尝试时，转换被中止。 A转换器被进一步公开。

公开(公告)号：US20050281447A1

公开(公告)日：2005-12-22

申请号：US11065731

申请日：2005-02-24

申请人： Romain Moreau-Gobard ,  Nicolas Tisserand

发明人： Romain Moreau-Gobard ,  Nicolas Tisserand

IPC分类号： G06T5/00 ,  G06T7/60 ,  H05G1/60 ,  A61B6/00 ,  G06K9/00 ,  G21K1/12

CPC分类号： G06T7/62 ,  G06T7/12 ,  G06T7/149 ,  G06T7/174 ,  G06T2207/10081 ,  G06T2207/20101 ,  G06T2207/20116 ,  G06T2207/30048 ,  G06T2207/30101

摘要： A system and method for detecting the aortic valve is provided. The method comprises: (a) casting rays on a slice of a computed tomography (CT) dataset of an aorta; (b) computing a Gaussian model for voxels on the slice, wherein the Gaussian model produces a threshold; (c) growing a circle from a point within the aorta until control points of the circle reach the threshold; (d) computing a repulsion vector for each control point reaching the threshold; (e) repositioning the circle according to an average of the repulsion vectors, wherein if the circle is within the aorta, repeating steps (c-e) until the circle is not within the aorta; (f) calculating a statistical value for the circle; (g) projecting a copy of the circle onto an adjacent slice; (h) reducing the radius of the copy of the circle; and (i) repeating steps (c-h) on remaining CT slices until the aortic valve is detected.

摘要翻译： 提供了一种用于检测主动脉瓣的系统和方法。 该方法包括：（a）在主动脉的计算机断层摄影（CT）数据集的切片上投射射线; （b）计算所述切片上的体素的高斯模型，其中所述高斯模型产生阈值; （c）从主动脉内的点生长一圈，直至圆的控制点达到阈值; （d）计算达到阈值的每个控制点的排斥向量; （e）根据排斥向量的平均值重新定位圆，其中如果圆在主动脉内，则重复步骤（c-e）直到圆不在主动脉内; （f）计算圆的统计值; （g）将圆的副本投影到相邻的切片上; （h）缩小圆的副本半径; 和（i）在剩余的CT片上重复步骤（c-h），直到检测到主动脉瓣。

公开(公告)号：US20050093861A1

公开(公告)日：2005-05-05

申请号：US10978654

申请日：2004-11-01

申请人： Romain Moreau-Gobard

发明人： Romain Moreau-Gobard

IPC分类号： A61B6/03 ,  G06T15/08 ,  G06T15/00

CPC分类号： G06T15/08 ,  G06T2210/41

摘要： A system and corresponding method for organ rendering are provided, where the system includes a processor, an imaging adapter in signal communication with the processor for receiving organ scan data indicative of an organ, a segmentation unit in signal communication with the processor for segmenting an outer surface of the organ, and a ray-casting unit in signal communication with the processor for providing a maximum intensity projection substantially normal to the segmented outer surface for each of a plurality of rays, and for forming a ray collection by casting each of the plurality of rays from a center of the organ through the respective projection to the segmented outer surface; and where the method includes segmenting an outer surface of an organ, providing a maximum intensity projection substantially normal to the segmented outer surface for each of a plurality of rays, and forming a ray collection by casting each of the plurality of rays from a center of the organ through the respective projection to the segmented outer surface.

摘要翻译： 提供了一种用于器官渲染的系统和相应的方法，其中系统包括处理器，与处理器进行信号通信的成像适配器，用于接收指示器官的器官扫描数据，与处理器进行信号通信的分割单元，用于分割外部 器官的表面，以及与处理器信号通信的射线铸造单元，用于为多个射线中的每一个提供基本上垂直于分割的外表面的最大强度投影，并且通过铸造多个射线中的每一个来形成射线收集 从器官的中心通过相应的突起到分割的外表面的射线; 并且其中所述方法包括分割器官的外表面，提供基本上垂直于所述分割的外表面的用于多个射线中的每一个的最大强度投影，以及通过将所述多个光线的每一个从 器官通过相应的投影到分割的外表面。