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41.发明公开Detecting internal structures contained within the interior region of a solid object 失效Ermittlung von inneren Strukturen innerhalb eines festen Objekts。
公开(公告)号：EP0373854A2
公开(公告)日：1990-06-20
申请号：EP89312900.7
申请日：1989-12-11
IPC分类号： G06F15/72
CPC分类号： G06T17/00 , G06T7/12 , G06T7/187 , G06T2207/10072 , G06T2207/30004
摘要： In order to detect and display arbitrary interior surfaces of a three-dimensional body from a regular array of values of at least one physical property in the interior of the body, the physical property measurements are made with systems such as computerized tomographic x-ray imaging, or magnetic resonance imaging. A recursive algorithm starts with a seed voxel in the surface of interest and continues to all adjacent voxels having a common face which is penetrated by the surface of interest. The common surface penetrations are derived from a look-up table which lists the adjacent voxels having a common penetrated face for each voxel index. The voxel index, in turn, is the string of binary digits representing the voxel vertices whose vertex values exceed the surface value of the surface of interest. The resulting list of voxels can be processed by conventional processors to display the surface of interest with greatly reduced interference from nearby, closely intermingled surfaces with the same or similar surface values.
摘要翻译： 为了从身体内部的至少一个物理特性的规则数组的数组中检测和显示三维体的任意内表面，物理特性测量用诸如计算机断层X射线成像 ，或磁共振成像。 递归算法从感兴趣的表面中的种子体素开始，并且继续到具有被感兴趣的表面穿透的共同的面的所有相邻体素。 共同的表面穿透是从查找表中得出的，其列出了对于每个体素索引具有公共穿透面的相邻体素。 体素索引又是表示顶点值超过感兴趣表面的表面值的体元顶点的二进制数字串。 所得到的体素列表可以由常规处理器处理，以便以相同或相似的表面值从邻近的，紧密混合的表面大大降低干扰来显示感兴趣的表面。
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42.发明公开System and method for displaying oblique cut planes within the interior region of a solid object 失效系统和用于显示在一个固体本体的内部偏斜截面平面方法。
公开(公告)号：EP0365141A2
公开(公告)日：1990-04-25
申请号：EP89309414.4
申请日：1989-09-15
IPC分类号： G06F15/72
CPC分类号： G06T19/00 , G06T15/08 , G06T2219/008
摘要： A method and apparatus for displaying arbitrary cross-sectional views of a three-dimensional body from a regular array of values of at least one physical property in the interior of the body includes making physical property measurements with such systems as computerized tomographic x-ray systems, or magnetic resonance imaging systems. Cut planes are defined by the user as displacement from, and rotations from, an arbitrary coordinate origin in the data space. An initial plane of pixel positions of arbitrary density is displaced and rotated to correspond to the cut plane. The values for the physical property at the pixel positions are interpolated from the surrounding measurements of actual values. Cross-sectional images are thereby supplied interactively in real time to support, for example, ongoing surgical procedures.
摘要翻译： 一种用于从在所述本体的内部的至少一个物理性质的值的规则阵列显示三维体的任意横截面视图的方法和装置包括制作物性测定用的搜索系统，计算机化断层X射线系统 或磁共振成像系统。 切断面由用户从位移限定，并且从在任意旋转坐标在数据空间的原点。 规划任意密度的像素的初始位置被移位和旋转，以对应于所述切断面。 在像素位置处的物理性质的值是从实际值的周围测量内插。 横截面图像，从而在实时支持，例如，正在进行的手术程序交互提供。
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43.发明公开Dividing cubes and method for the display of surface structures contained within the interior region of a solid body 失效立方体分割的系统和方法用于在固体表面结构的内部区域中显示接收到的。
公开(公告)号：EP0216156A2
公开(公告)日：1987-04-01
申请号：EP86111637.4
申请日：1986-08-22
IPC分类号： G06F15/62
CPC分类号： G06T17/00
摘要： A system for displaying three dimensional surface structures employs the analysis of voxel elements defined by eight cubically adjacent grid locations which are associated with at least one physical property defined throughout a three dimensional body. The physical property measurements may be made with such systems as computerized tomographic x-ray systems, or magnetic resonance imaging devices. Surface structures are defined by a user selected threshold value such as distinct values for skin and bone In medical diagnostic applications. Selected voxels are subdivided and means are provided for generating signal values associated with intermediate additional grid locations. Means are also provided for generating surface normal vectors associated with these grid locations. The system of the present invention produces a sequence of signals representative of grid locations throughout the object being investigated together with associated surface normal vectors at these locations, the locations lying on a user selected surface. The system provides smooth, high resolution images which are particularly useful for medical diagnostic applications and is particularly useful with conventional display processor hardware used for electronic graphics display. The capabilities of the system additionally provide enhanced flexibility and speed for the convenience of interactive users.
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44.发明授权
公开(公告)号：EP1052522B1
公开(公告)日：2006-10-25
申请号：EP00304049.0
申请日：2000-05-12
IPC分类号： G01R33/563 , G01R33/54 , G06T11/00
CPC分类号： G01R33/4833 , G01R33/563
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45.发明公开
公开(公告)号：EP1008864A3
公开(公告)日：2004-06-23
申请号：EP99309895.3
申请日：1999-12-09
CPC分类号： G01S7/52034 , G01S7/52026 , G01S15/8993 , Y10S128/916
摘要： In three-dimensional imaging of ultrasound data, speckle artifact data are reduced before the acquired data from a volume of interest are projected onto an image plane. A master controller performs an algorithm that iteratively morphologically filters (28) the pixel data in a volume of interest and then iteratively projects (30,32,34) the morphologically filtered data onto a plurality of rotated image planes using a ray-casting technique. Morphological filtering is performed by stepping a seven-point kernel through a source data volume of pixel data. The kernel, made up of a central pixel value and the six pixel values adjacent to the central pixel value, is stepped through the entire source data volume. The morphological filtering operation includes at least one erosion step, which removes speckle, followed by an equal number of dilation steps, which restore the imaging data.
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公开(公告)号：EP0549183B1
公开(公告)日：2003-05-14
申请号：EP92311191.8
申请日：1992-12-09
IPC分类号： G06T17/00
CPC分类号： G06T15/30 , G06T17/00 , G06T19/00 , G06T2210/41 , G06T2219/008
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47.发明公开Method of registering surfaces using curvature 审中-公开Verfahren zur Registrierung vonOberflächenmittelsKrümmung
公开(公告)号：EP1039418A2
公开(公告)日：2000-09-27
申请号：EP00302111.0
申请日：2000-03-15
IPC分类号： G06T17/00
摘要： A patient surface is registered with a model surface based on curvature by acquiring patient range data (10) and determining the curvature (12) of the patient surface based on the range data. The patient surface is generated and shaded (14) based on the curvature. A model surface is generated from image data (20) and processed to determine the curvature of the model surface (22). The model surface is shaded to represent the curvature (24). The shaded patient surface and the shaded model surface are aligned in registration with each other (16,26,30) by manipulating the patient surface (18) and/or the model surface until the curvature features coincide.
摘要翻译： 基于范围数据，通过获取患者范围数据（10）并确定患者表面的曲率（12），基于曲率将病人表面与模型表面对齐。 基于曲率产生患者表面并进行阴影（14）。 从图像数据（20）生成模型表面并进行处理以确定模型表面（22）的曲率。 模型表面被遮蔽以表示曲率（24）。 阴影的患者表面和阴影模型表面通过操纵患者表面（18）和/或模型表面直到曲率特征重合为止对齐（16,26,30）。
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48.发明公开Three-dimensional imaging by projecting morphologically filtered pixel data 有权Dreidimensionale Abbildung mittels der Projektion von morphologisch filtrierten Pixeldaten
公开(公告)号：EP1008864A2
公开(公告)日：2000-06-14
申请号：EP99309895.3
申请日：1999-12-09
IPC分类号： G01S15/89
CPC分类号： G01S7/52034 , G01S7/52026 , G01S15/8993 , Y10S128/916
摘要： In three-dimensional imaging of ultrasound data, speckle artifact data are reduced before the acquired data from a volume of interest are projected onto an image plane. A master controller performs an algorithm that iteratively morphologically filters (28) the pixel data in a volume of interest and then iteratively projects (30,32,34) the morphologically filtered data onto a plurality of rotated image planes using a ray-casting technique. Morphological filtering is performed by stepping a seven-point kernel through a source data volume of pixel data. The kernel, made up of a central pixel value and the six pixel values adjacent to the central pixel value, is stepped through the entire source data volume. The morphological filtering operation includes at least one erosion step, which removes speckle, followed by an equal number of dilation steps, which restore the imaging data.
摘要翻译： 在超声数据的三维成像中，在将来自感兴趣体积的所获取的数据投影到图像平面上之前，斑点伪像数据被减少。 主控制器执行一种算法，其迭代地形态地过滤（28）感兴趣的体积中的像素数据，然后使用射线投射技术将形态滤波的数据迭代地投影到多个旋转图像平面上（30,32,34）。 通过对像素数据的源数据量进行七点内核的步进来进行形态滤波。 由中心像素值和与中心像素值相邻的六个像素值组成的内核通过整个源数据量进行分层。 形态学滤波操作包括至少一个侵蚀步骤，其消除斑点，随后进行相等数量的扩张步骤，其恢复成像数据。
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49.发明授权System and method for the display of surface structures contained within the interior region of a solid body 失效系统和方法，用于显示封闭在固体表面结构的内部。
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公开(公告)号：EP0549189A3
公开(公告)日：1994-02-16
申请号：EP92311198.3
申请日：1992-12-09
IPC分类号： G06F15/72
CPC分类号： G06T17/10
摘要： A span processor receives volumetric data from an imaging apparatus and stores the data as a condensed display list in a span memory. After the volumetric data has been stored, the span processor converts the display list to a display list comprised of points and normal vectors which is stored in a point and normal display list memory. A model clipping circuit determines points which are to be displayed corresponding to desired model cut planes. A rotate circuit transforms the point and normal display list according to the desired orientation, and also converts the normal vectors into levels of shading according to the direction of the normal vector. The points in the transformed display list are clipped to a desired screen viewing region by a screen clipping circuit. A depth buffer, compare circuit, and an AND circuit determine voxels which do not lie behind other surfaces, and are proper to display. The AND circuit allows update of the depth buffer and an image memory buffer, the image memory buffer being a screen map. The image memory is displayed on a monitor. The models are manipulated and cut much more rapidly on a low end workstation than would be possible using conventional methods.
摘要翻译： 量程处理器接收来自成像装置的体积数据并将该数据作为精简显示列表存储在量程存储器中。 在存储体数据之后，跨度处理器将显示列表转换成由存储在点和正常显示列表存储器中的点和法向矢量组成的显示列表。 模型剪切电路确定要显示的对应于期望模型剪切面的点。 旋转电路根据所需的方向来变换点和正常显示列表，并且还根据法向矢量的方向将法向矢量转换成阴影级别。 通过屏幕剪切电路将变换后的显示列表中的点剪切到期望的屏幕观看区域。 深度缓冲器，比较电路和AND电路确定不位于其他表面之后的体素，并且适合于显示。 AND电路允许更新深度缓冲器和图像存储器缓冲器，图像存储器缓冲器是屏幕图。 图像存储器显示在监视器上。 在低端工作站上操作和切割模型的速度要比使用传统方法时要快得多。
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