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    AUTOMATIC PRE-ALIGNMENT FOR REGISTRATION OF MEDICAL IMAGES
    3.
    发明申请
    AUTOMATIC PRE-ALIGNMENT FOR REGISTRATION OF MEDICAL IMAGES 失效
    医学图像注册的自动预对齐

    公开(公告)号：US20110116701A1

    公开(公告)日：2011-05-19

    申请号：US13054109

    申请日：2009-07-20

    申请人： Yang-Ming Zhu ,  Steven M. Cochoff ,  Cheng-Hsiu Chen

    发明人： Yang-Ming Zhu ,  Steven M. Cochoff ,  Cheng-Hsiu Chen

    IPC分类号： G06K9/32 ,  G06K9/00

    CPC分类号： G06T7/38 ,  G06T2200/04 ,  G06T2207/10081 ,  G06T2207/10104 ,  G06T2207/10136 ,  G06T2207/20076 ,  G06T2207/30196

    摘要： In image registration, a similarity measure is computed of first and second images (4, 6) offset at a plurality of relative axial offsets (30). A starting relative axial offset (40) between the first and second images is identified based on the computed similarity measures. An iterative image registration process is performed to relatively register the first and second images (4, 6) using the identified starting relative axial offset between the first and second images as an initial condition for the iterative image registration process. A starting relative in-slice offset (42) may also be identified as an in-slice offset effective to align corresponding slices of the first and second images (4, 6) offset at the starting relative axial offset (40), the identified starting relative in-slice offset also being used as an initial condition for the iterative image registration process.

    摘要翻译： 在图像配准中，计算在多个相对轴向偏移（30）处偏移的第一和第二图像（4,6）的相似性度量。 基于所计算的相似性度量来识别第一和第二图像之间的起始相对轴向偏移（40）。 执行迭代图像注册处理以使用所识别的第一和第二图像之间的起始相对轴向偏移来相对地注册第一和第二图像（4,6）作为迭代图像注册处理的初始条件。 起始相对片内偏移（42）也可以被识别为有效地对准在起始相对轴向偏移（40）处偏移的第一和第二图像（4,6）的对应切片的片内偏移，所识别的起始 相对片内偏移也被用作迭代图像配准过程的初始条件。

    Automatic pre-alignment for registration of medical images
    6.
    发明授权
    Automatic pre-alignment for registration of medical images 失效
    自动预校准用于医学图像的注册

    公开(公告)号：US08553961B2

    公开(公告)日：2013-10-08

    申请号：US13054109

    申请日：2009-07-20

    申请人： Yang-Ming Zhu ,  Steven M. Cochoff ,  Cheng-Hsiu Chen

    发明人： Yang-Ming Zhu ,  Steven M. Cochoff ,  Cheng-Hsiu Chen

    IPC分类号： G06K9/00 ,  G06K9/46

    CPC分类号： G06T7/38 ,  G06T2200/04 ,  G06T2207/10081 ,  G06T2207/10104 ,  G06T2207/10136 ,  G06T2207/20076 ,  G06T2207/30196

    摘要： In image registration, a similarity measure is computed of first and second images (4, 6) offset at a plurality of relative axial offsets (30). A starting relative axial offset (40) between the first and second images is identified based on the computed similarity measures. An iterative image registration process is performed to relatively register the first and second images (4, 6) using the identified starting relative axial offset between the first and second images as an initial condition for the iterative image registration process. A starting relative in-slice offset (42) may also be identified as an in-slice offset effective to align corresponding slices of the first and second images (4, 6) offset at the starting relative axial offset (40), the identified starting relative in-slice offset also being used as an initial condition for the iterative image registration process.

    摘要翻译： 在图像配准中，计算在多个相对轴向偏移（30）处偏移的第一和第二图像（4,6）的相似性度量。 基于所计算的相似性度量来识别第一和第二图像之间的起始相对轴向偏移（40）。 执行迭代图像注册处理以使用所识别的第一和第二图像之间的起始相对轴向偏移来相对地注册第一和第二图像（4,6）作为迭代图像注册处理的初始条件。 起始相对片内偏移（42）也可以被识别为有效地对准在起始相对轴向偏移（40）处偏移的第一和第二图像（4,6）的对应切片的片内偏移，所识别的起始 相对片内偏移也被用作迭代图像配准过程的初始条件。

    Imaging registration system and method using likelihood maximization
    8.
    发明授权
    Imaging registration system and method using likelihood maximization 有权
    使用似然最大化的成像注册系统和方法

    公开(公告)号：US06728424B1

    公开(公告)日：2004-04-27

    申请号：US09663803

    申请日：2000-09-15

    申请人： Yang-Ming Zhu ,  Steven M. Cochoff

    发明人： Yang-Ming Zhu ,  Steven M. Cochoff

    IPC分类号： G06K932

    CPC分类号： G06T3/0068 ,  G06T7/33 ,  G06T7/35

    摘要： An image processing system and method employs a registration processor (130) to calculate a statistical measure of likelihood for two volumetric images (110, 112). The likelihood is calculated based on an assumption that the voxel values in two images in registration are probabilitically related. The likelihood is calculated for a plurality of relative transformations in iterative fashion until a transformation that maximizes the likelihood is found. The transformation that maximizes the likelihood provides an optimal registration and the parameters for the optimized transform are output to memory (150) for use by a display system (160) in aligning the images for display as a fused or composite image. If statistics about the relationship between the involved images are known, a mutation probability can be derived and used in the likelihood calculation. If there is no such prior knowledge, the mutation probability can be estimated purely from the image data. All voxel pairs in the overlapping volume or, alternatively, a portion of it can be used to compute the likelihood. The optimized likelihood has a simple and less abstract interpretation and can be further used to provide an indication of the quality of the registration.

    摘要翻译： 图像处理系统和方法使用注册处理器（130）来计算两个体积图像（110,112）的似然性的统计度量。 基于假设注册中的两个图像中的体素值是概率相关的，计算似然性。 以迭代的方式计算多个相对变换的似然性，直到找到使可能性最大化的变换。 使可能性最大化的变换提供了最佳注册，并且用于优化的变换的参数被输出到存储器（150），以供显示系统（160）将图像对准以用于显示为融合或合成图像。 如果涉及图像之间的关系的统计数据是已知的，则可以导出变异概率并在可能性计算中使用。 如果没有这样的现有知识，则可以纯粹地从图像数据估计突变概率。 重叠卷中的所有体素对，或者替代地，其一部分可以用于计算似然性。 优化的可能性具有简单且较少抽象的解释，并且可以进一步用于提供注册质量的指示。

    Dynamic drive methods and apparatus for a bistable liquid crystal display
    9.
    发明授权
    Dynamic drive methods and apparatus for a bistable liquid crystal display 失效
    用于双稳态液晶显示器的动态驱动方法和装置

    公开(公告)号：US6154190A

    公开(公告)日：2000-11-28

    申请号：US852319

    申请日：1997-05-07

    申请人： Deng-Ke Yang ,  Yang-Ming Zhu ,  Xiao-Yang Huang

    发明人： Deng-Ke Yang ,  Yang-Ming Zhu ,  Xiao-Yang Huang

    IPC分类号： G02F1/133 ,  G02F1/137 ,  G09G3/20 ,  G09G3/36

    CPC分类号： G09G3/3629 ,  G02F1/13718 ,  G09G2300/0486 ,  G09G2310/0205 ,  G09G2310/06 ,  G09G2320/0209 ,  G09G3/2011 ,  G09G3/2014 ,  G09G3/3681

    摘要： A flat-panel liquid crystal display. The display includes a flat sheet of bistable chiral nematic liquid crystal material activated by a drive circuit that individually controls the display state of multiple picture elements. The driver circuitry activates the liquid crystal domains with various drive schemes which have any number of different phases to attain various addressing sequence times. At the end of each drive scheme, the texture of the liquid crystal material is allowed to provide either focal conic or twisted planar end states across the two-dimensional array of picture elements. Each drive scheme employs at least a preparation phase and a selection phase to predispose the liquid crystal material to one of the end states.

    摘要翻译： 平板液晶显示屏。 显示器包括由驱动电路激活的双稳态手性向列型液晶材料的平板，其单独控制多个图像元素的显示状态。 驱动器电路利用具有任意数量的不同相位的各种驱动方案激活液晶畴，以获得各种寻址顺序时间。 在每个驱动方案结束时，允许液晶材料的纹理在图像元素的二维阵列之间提供焦点圆锥或扭曲的平面端状态。 每个驱动方案至少使用准备阶段和选择阶段来将液晶材料倾向于其中一个结束状态。

    Cumulative two phase drive scheme for bistable cholesteric reflective displays
    10.
    发明授权
    Cumulative two phase drive scheme for bistable cholesteric reflective displays 失效
    双稳态胆甾醇反射显示器的累积双相驱动方案

    公开(公告)号：US06204835B1

    公开(公告)日：2001-03-20

    申请号：US09076564

    申请日：1998-05-12

    申请人： Deng-Ke Yang ,  Yang-Ming Zhu

    发明人： Deng-Ke Yang ,  Yang-Ming Zhu

    IPC分类号： G09G336

    CPC分类号： G09G3/3629 ,  G09G3/2007 ,  G09G2300/0486 ,  G09G2310/06 ,  G09G2310/065 ,  G09G2320/0247

    摘要： Bistable cholesteric liquid crystal material is disposed between opposed substrates, wherein one of the substrates has a first plurality of electrodes facing a second plurality of electrodes on the other substrate, wherein the intersection of the first and the second plurality of electrodes forms a plurality of pixels. The material is addressed by applying a preparation voltage across the first and second plurality of electrodes and then subsequently applying a selection voltage across the first and second plurality of electrodes. The material is then allowed to relax for a period of time, whereupon the preparation and selection voltages are reapplied. These steps are repeated until the liquid crystal material obtains the desired reflectance.

    摘要翻译： 双稳态胆甾型液晶材料设置在相对的基板之间，其中一个基板具有面对另一基板上的第二多个电极的第一多个电极，其中第一和第二多个电极的交点形成多个像素 。 通过在第一和第二多个电极上施加制备电压然后随后在第一和第二多个电极上施加选择电压来解决材料。 然后使材料放松一段时间，然后重新应用制备和选择电压。 重复这些步骤，直到液晶材料获得所需的反射率。