METHOD, SYSTEM AND COMPUTER PROGRAM PRODUCT FOR PROVIDING USER-CUSTOMIZABLE STANDARDIZED ANATOMICAL VIEWING PROTOCOLS FOR VOLUMETRIC DATA
    11.
    发明申请
    METHOD, SYSTEM AND COMPUTER PROGRAM PRODUCT FOR PROVIDING USER-CUSTOMIZABLE STANDARDIZED ANATOMICAL VIEWING PROTOCOLS FOR VOLUMETRIC DATA 审中-公开
    方法,系统和计算机程序产品,用于为体积数据提供用户可定制的标准化解析方案

    公开(公告)号:US20080074422A1

    公开(公告)日:2008-03-27

    申请号:US11534345

    申请日:2006-09-22

    IPC分类号: G06T17/00

    摘要: A method, system and computer program product for automatically generating a set of views for a new set of voxel data according to a viewing protocol are provided. This involves a) storing a reference set of views for a reference set of voxel data according to the viewing protocol, wherein each view in the reference set of views is defined by a set of geometrical parameters defined with respect to a reference coordinate system of the reference set of voxels; b) defining a registration mapping from the reference set of voxel data to the new set of voxel data; and, c) for each view in the reference set of views, using the registration mapping to map each view in the reference set of views to the new set of voxel data to provide the set of views for the new set of voxel data according to the viewing protocol.

    摘要翻译: 提供了一种用于根据观看协议自动生成新的一组体素数据的视图的方法,系统和计算机程序产品。 这涉及:a)根据观看协议存储参考体素集数据的参考视图集,其中参考视图集中的每个视图由关于参考坐标系定义的一组几何参数来定义 体素参考集 b)定义从体素数据的参考集合到新的体元数据集合的注册映射; 以及c)对于所述参考视图集中的每个视图,使用所述注册映射将所述参考视图集中的每个视图映射到新的体素数据集合,以根据所述新的体素数据集来提供所述视图集 查看协议。

    Segmenting colon wall via level set techniques
    12.
    发明授权
    Segmenting colon wall via level set techniques 有权
    通过水平仪技术分段结肠壁

    公开(公告)号:US08175348B2

    公开(公告)日:2012-05-08

    申请号:US11810704

    申请日:2007-06-05

    IPC分类号: G06K9/00

    摘要: Various level set techniques can be used to automatically segment the colon wall, including identifying the colon wall outer boundary. A speed image can be used during level set processing. For example, the speed image can be generated via inverting the gradient perpendicular to the segmented inner boundary of the colon wall. The techniques can be useful for determining wall thickness, which can be used to classify polyp candidates, diagnose diseases of the colon, and the like.

    摘要翻译: 可以使用各种水平集技术来自动分割结肠壁,包括识别结肠壁外界。 在电平设定处理期间可以使用速度图像。 例如,可以通过反转垂直于结肠壁的分段内边界的梯度来生成速度图像。 该技术可用于确定壁厚,其可用于分类息肉候选物,诊断结肠疾病等。

    Segmenting colon wall via level set techniques
    13.
    发明申请
    Segmenting colon wall via level set techniques 有权
    通过水平仪技术分段结肠壁

    公开(公告)号:US20080304616A1

    公开(公告)日:2008-12-11

    申请号:US11810704

    申请日:2007-06-05

    IPC分类号: A61B6/03

    摘要: Various level set techniques can be used to automatically segment the colon wall, including identifying the colon wall outer boundary. A speed image can be used during level set processing. For example, the speed image can be generated via inverting the gradient perpendicular to the segmented inner boundary of the colon wall. The techniques can be useful for determining wall thickness, which can be used to classify polyp candidates, diagnose diseases of the colon, and the like.

    摘要翻译: 可以使用各种水平集技术来自动分割结肠壁,包括识别结肠壁外界。 在电平设定处理期间可以使用速度图像。 例如,可以通过反转垂直于结肠壁的分段内边界的梯度来生成速度图像。 该技术可用于确定壁厚,其可用于分类息肉候选物,诊断结肠疾病等。

    Super-sampling and gradient estimation in a ray-casting volume rendering system
    14.
    发明授权
    Super-sampling and gradient estimation in a ray-casting volume rendering system 有权
    射线投射体绘制系统中的超采样和梯度估计

    公开(公告)号:US06483507B2

    公开(公告)日:2002-11-19

    申请号:US09862901

    申请日:2001-05-22

    IPC分类号: G06T1500

    摘要: A volume rendering processor renders a two-dimensional image from a volume data set of voxels constituting a three-dimensional representation of an object. Voxel memory interface logic retrieves the voxels from a voxel memory in a scanned order with respect to X, Y and Z coordinate axes, the Z axis being the axis most nearly parallel to a predefined viewing direction. The set of voxels having equal Z coordinate values are referred to as a “slice” of voxels. Interpolation logic calculates a sequence of samples from the retrieved voxels such that (i) each sample lies along a corresponding imaginary ray extending through the object parallel to the viewing direction, (ii) each sample results from interpolating the eight voxels surrounding the sample in the XYZ coordinate system. “Supersampling” in the Z dimension is performed such that the number of samples calculated for each ray is greater than the number of slices of voxels in the volume data set. Gradient calculation logic calculates for each sample respective gradients in the X, Y and Z directions for use by classification and illumination logic. The X and Y gradients are calculated from the samples emitted by the interpolation logic, and Z gradients are calculated by (i) calculating Z gradients at the voxel positions from voxel values retrieved from memory, and (ii) interpolating the voxel Z gradients to arrive at the Z gradients at the sample positions.

    摘要翻译: 体绘制处理器从构成对象的三维表示的体素数据集合呈现二维图像。 体素存储器接口逻辑以相对于X,Y和Z坐标轴的扫描顺序从体素存储器检索体素,Z轴是最接近平行于预定观察方向的轴。 具有相等Z坐标值的一组体素被称为体素的“切片”。 插值逻辑从所检索的体素计算样本序列,使得(i)每个样本沿着平行于观察方向延伸穿过物体的相应假想射线位于(ii)每个样本由内插样本周围的八个体素 XYZ坐标系。 执行Z维度中的“超采样”,使得针对每个射线计算的样本数量大于体数据集中体素的数量。 梯度计算逻辑计算X,Y和Z方向上每个样本各个梯度的分类和照明逻辑使用的梯度。 由内插逻辑发射的样本计算X和Y梯度,并且(i)通过(i)从存储器检索的体素值计算体素位置处的Z梯度来计算Z梯度,以及(ii)内插体素Z梯度以到达 在Z样品位置的梯度。