公开(公告)号：WO2015061914A1

公开(公告)日：2015-05-07

申请号：PCT/CA2014/051055

申请日：2014-11-03

Applicant: THE UNIVERSITY OF BRITISH COLUMBIA

Inventor： SHEFFER, Alla ,  VINING, Nicholas ,  GREGSON, James ,  LIVESU, Marco

IPC: G06T17/20 ,  G06T17/30

CPC classification number: G06T17/20 ,  G06T11/40 ,  G06T15/005 ,  G06T15/04 ,  G06T17/205 ,  G06T19/20 ,  G06T2219/2021

Abstract: A method for generating a polycube segmentation of an input object comprises: providing an input mesh of the object comprising a plurality of surface faces; generating an initial polycube labeling for the faces by assigning, to each face, a label which is one of six directions (±X,±Y,±Z) aligned with a set of Cartesian axes, the initial polycube labeling defining a plurality of charts, and generating the initial polycube labeling comprising effecting a tradeoff between competing objectives of: making the initial polycube labeling relatively compact; and making the initial polycube labeling relatively faithful to the input object. The method further comprises generating an updated polycube segmentation by changing the label assigned to each of one or more surface faces and thereby modifying one or more of the charts to provide the charts with monotonic boundaries.

Abstract translation: 一种用于产生输入对象的多立方体分割的方法包括：提供包括多个表面的对象的输入网格; 通过向每个面分配一个与一组笛卡尔坐标轴对准的六个方向（±X，±Y，±Z）之一的标签，生成面的初始多立方体标签，初始多立方体标签定义多个图表 并且产生初始聚合物标签，其包括在相互竞争的目标之间进行权衡：使得初始聚合物标记相对紧凑; 并使得初始聚合物标签对输入对象相对忠实。 该方法还包括通过改变分配给一个或多个表面中的每个表面的标签来生成更新的多立方体分割，从而修改一个或多个图表以向图表提供单调边界。

公开(公告)号：WO2014141273A3

公开(公告)日：2015-03-26

申请号：PCT/IL2014050276

申请日：2014-03-13

Applicant: STRATASYS LTD

Inventor： SHTILERMAN STANISLAV

IPC: B29C67/00 ,  G05B19/4099 ,  G06T17/30

CPC classification number: G06F17/50 ,  B29C64/386 ,  B29C67/0088 ,  B33Y10/00 ,  B33Y50/02 ,  G05B19/4099 ,  G05B2219/49014 ,  G05B2219/49039 ,  G06T17/10

Abstract: A method for slicing a three-dimensional model for printing of a corresponding object by a 3D printer, comprises: obtaining the envelope of the object as polygons, then for each region of a predefined work area within the slicing plane: identifying the closest polygon of said envelope that is positioned above said respective pixel; where no polygon is identified, then marking a corresponding region as a no-print region; if the direction vector of said closest above polygon has a positive component in the Z direction, then marking said corresponding region as a model region; and if the direction vector of said polygon has a negative component in the Z direction, then marking the region as a support region, and printing accordingly. An advantage of the above procedure is that the slicing, and in addition texture mapping, can be efficiently carried out on a graphics card or GPU.

Abstract translation: 一种用于通过3D打印机对用于打印相应对象的三维模型进行切片的方法，包括：获取所述对象的包络作为多边形，然后对于所述切片平面内的预定义工作区域的每个区域：识别最接近的多边形 所述包络位于所述相应像素上方; 其中没有识别多边形，然后将对应的区域标记为无打印区域; 如果所述最近的多边形的方向矢量在Z方向上具有正分量，则将所述对应的区域标记为模型区域; 并且如果所述多边形的方向矢量在Z方向上具有负分量，则将该区域标记为支撑区域，并相应地进行打印。 上述过程的一个优点是可以在显卡或GPU上高效地执行切片（另外还有纹理映射）。

公开(公告)号：WO2012014036A3

公开(公告)日：2013-01-31

申请号：PCT/IB2011001683

申请日：2011-06-16

Applicant: SURGICAL A ,  CHABANAS LAURENCE ,  LAVALLEE STEPHANE ,  TONETTI JEROME ,  BYRD THOMAS ,  KELLY BRYAN TALMADGE ,  LARSON CHRISTOPHER

Inventor： CHABANAS LAURENCE ,  LAVALLEE STEPHANE ,  TONETTI JEROME ,  BYRD THOMAS ,  KELLY BRYAN TALMADGE ,  LARSON CHRISTOPHER

IPC: G06T19/20 ,  A61B5/00 ,  G06T17/30

CPC classification number: G06T7/0012 ,  G06T3/60 ,  G06T5/002 ,  G06T17/30 ,  G06T19/20 ,  G06T2210/41 ,  G06T2219/2021

Abstract: The invention relates to a method for non-invasive reproducible determination of a corrected surface on a 3D bone surface model constructed from 3D medical image of a bone having a deformation consisting in a bump overgrowth at the head-neck junction; wherein said corrected surface comprises: i) a 3D spherical corrected surface patch on the head portion of said 3D bone surface model, and ii) a 3D smooth transition corrected surface patch on the neck portion of said 3D bone surface model, contiguous to said 3D spherical corrected surface patch; Said corrected surface patches are defined by a set of parameters comprising: iii) at least one first parameter (a*) representing a spherical extent value of said 3D spherical corrected surface patch, iv) and a set of at least one second parameter, said set determining the 3D correction boundary of said corrected surface patches, such that said corrected surface patches are continuous with said 3D bone surface model along said boundary.

Abstract translation: 本发明涉及一种用于在由具有由头颈交界处的隆起过度生长组成的变形的骨的3D医学图像构建的3D骨表面模型上进行的非侵入式可重复确定校正表面的方法; 其中所述校正表面包括：i）所述3D骨表面模型的头部上的3D球面校正表面贴片，以及ii）所述3D骨表面模型的颈部上的3D平滑过渡校正表面贴片，其与所述3D骨表面模型相邻 球面校正面贴片; 所述修正的表面贴片由一组参数定义，包括：iii）表示所述3D球面校正表面贴片的球面范围值的至少一个第一参数（a *），iv）和至少一个第二参数的集合，所述 设置确定所述校正的表面贴片的3D校正边界，使得所述校正的表面贴片沿着所述边界与所述3D骨表面模型连续。

公开(公告)号：WO2012058754A1

公开(公告)日：2012-05-10

申请号：PCT/CA2011/001212

申请日：2011-11-01

Applicant: CUBE LEASE INC. ,  ANGEVINE, Greg ,  CUFF, James

Inventor： ANGEVINE, Greg ,  CUFF, James

IPC: G06T17/20 ,  G06T17/30 ,  G06T19/00 ,  G06T17/05

CPC classification number: G06F17/50 ,  G06F17/30241 ,  G06Q50/16 ,  G06T17/05

Abstract: A method and system of creating and linking 3D spatial objects with dynamic data, and visualizing said objects in geographic information systems (GIS) is disclosed. The system includes a front end for a user interface, a database at the back end, and an application layer which processes the data sent between interface and database. A method of generating and uploading Keyhole Markup Language (KML) rings is disclosed. Furthermore, a user specifies a search location, and is shown a view of the available space indicated on the buildings by KML code which is assembled from the database by the system. A method for creating, linking and displaying a three-dimensional spatial object is also disclosed, as well as a method of generating a visual flight between several geographical points, showing the KML structures during the flight. Lastly, a method of showing a cardinal view from a floor of a building in a GIS is disclosed.

Abstract translation: 公开了一种创建和链接3D空间物体与动态数据，以及在地理信息系统（GIS）中可视化所述对象的方法和系统。 该系统包括用于用户界面的前端，后端的数据库，以及处理在接口和数据库之间发送的数据的应用层。 公开了一种生成和上传Keyhole标记语言（KML）环的方法。 此外，用户指定搜索位置，并且示出了由系统从数据库组装的KML代码在建筑物上指示的可用空间的视图。 还公开了一种用于创建，链接和显示三维空间物体的方法，以及在几个地理点之间产生视觉飞行的方法，其显示在飞行期间的KML结构。 最后，公开了一种在GIS中从建筑物的地板显示主要视图的方法。

公开(公告)号：WO2011130793A1

公开(公告)日：2011-10-27

申请号：PCT/AU2011/000458

申请日：2011-04-20

Applicant: NATIONAL ICT AUSTRALIA LIMITED ,  ROBLES-KELLY, Antonio ,  HUYNH, Cong Phuoc

Inventor： ROBLES-KELLY, Antonio ,  HUYNH, Cong Phuoc

IPC: G06T7/00 ,  G06T17/30

CPC classification number: G06K9/46 ,  G01B11/24 ,  G01N21/21 ,  G01N21/25 ,  G01N21/27 ,  G01N21/29 ,  G01N21/31 ,  G01N21/3151 ,  G06T7/50 ,  G06T7/507 ,  G06T7/514 ,  G06T7/586 ,  G06T7/97 ,  G06T17/00 ,  G06T2200/08 ,  G06T2207/10016 ,  G06T2207/10144

Abstract: The disclosure concerns processing of electronic images, such as hyperspectral, or multispectral images. In particular, but is not limited to, a method, software and computer for estimating shape information or a photometric invariant of a location of image of a scene. The image data (300) indexed by wavelength λ and polarisation filter angle ϑ. For each wavelength λ index, a polarisation angle φ is estimated from the image data (300) by the processor (810). The processor (810) then also estimates the shape information (such as azimuth a, zenith Θ, or surface normal) or photometric invariants (such as refractive index) based on the estimated polarisation angle φ for each wavelength index λ. Greater accuracies can be achieved in the estimated shape information and/or photometric invariants by using wavelength-indexed data. Further, surface information or photometric invariant can be estimated based upon polarisation in a single-view hyperspectral or multi-spectral imagery. Further, by relying on the polarisation angle for the estimation, the method is insensitive to changes in illumination power and direction.

Abstract translation: 本公开涉及电子图像的处理，例如高光谱或多光谱图像。 特别地，但不限于，用于估计场景图像的位置的形状信息或光度不变性的方法，软件和计算机。 以波长λ表示的图像数据（300） 和偏振滤光镜角度θ。 对于每个波长？ 索引，通过处理器（810）从图像数据（300）估计偏振角f。 然后，处理器（810）基于每个波长指数λ的估计的偏振角f来估计形状信息（诸如方位角a，天顶T或表面法线）或光度不变量（例如折射率）。 通过使用波长索引数据，可以在估计的形状信息和/或光度不变量中实现更高的准确度。 此外，可以基于单视图超光谱或多光谱图像中的极化来估计表面信息或光度不变量。 此外，通过依靠偏振角进行估计，该方法对照明功率和方向的变化不敏感。

公开(公告)号：WO2009101577A3

公开(公告)日：2009-08-20

申请号：PCT/IB2009/050544

申请日：2009-02-10

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  OPFER, Roland ,  WIEMKER, Rafael ,  BLAFFERT, Thomas

Inventor： OPFER, Roland ,  WIEMKER, Rafael ,  BLAFFERT, Thomas

IPC: G06T7/00 ,  G06T17/30 ,  G06T17/40

Abstract: The invention relates to a system (100) for interactive definition of a region of interest in an image data space, the system (100) comprising a point unit (110) for selecting a plurality of points for defining a boundary of the region of interest on the basis of user inputs and a boundary unit (120) for determining the boundary on the basis of the plurality of points, thereby defining the region of interest, wherein the boundary unit further comprises a domain unit (122) for determining a domain space for a parameterization of the boundary, a projection unit (124) for projecting each point of the plurality of points onto the domain space and an approximation unit (126) for computing a map for mapping the domain space into the image data space, wherein values of the map are points defining the boundary of the region of interest, such that the composition of said projection and said map satisfies a condition for defining the map. Only points necessary for defining the ROI need to be selected. For a simple-shape structure of interest, or for a structure of interest which is at a fair distance from other non- interesting structures, the number of points for defining a ROI comprising said structure of interest can be quite low. For a complex-shape structure of interest, a sufficient number of points can be selected to define a ROI that comprises said structure of interest but does not comprise, for example, a view-occluding structure. The intensities of voxels comprised in the structure of interest do not affect the definition of the ROI, because the ROI is defined on the basis of the selected plurality of points and is not affected by said intensities.

公开(公告)号：WO2008087413A2

公开(公告)日：2008-07-24

申请号：PCT/GB2008/000152

申请日：2008-01-17

Applicant: THE UNIVERSITY OF SHEFFIELD ,  WINKLER, Joab

Inventor： WINKLER, Joab

IPC: G06F17/11 ,  G06T17/30

CPC classification number: G06F17/11

Abstract: Embodiments of the invention comprise a method of solving a polynomial equation, comprising determining one or more alternative polynomials from an inexact polynomial that satisfy one or more constraints, wherein the constraints include that the alternative polynomials have at least one multiple root.

Abstract translation: 本发明的实施例包括解决多项式方程式的方法，包括从满足一个或多个约束的不精确多项式确定一个或多个替代多项式，其中约束包括替代多项式具有至少一个多个根。

公开(公告)号：WO2008022056A3

公开(公告)日：2008-02-21

申请号：PCT/US2007/075759

申请日：2007-08-11

Applicant: SIEMENS PRODUCT LIFECYCLE MANAGEMENT SOFTWARE INC. ,  HUANG, Jianbing ,  CARTER, Michael, B. ,  JOHANNSEN, Andreas ,  HARPER, Brett

Inventor： HUANG, Jianbing ,  CARTER, Michael, B. ,  JOHANNSEN, Andreas ,  HARPER, Brett

IPC: G06T17/30 ,  G06T9/00

Abstract: A system, method, and computer program for for organizing elements for compression, comprising nesting a hierarchical topological structure having a plurality of elements; arranging said plurality of elements in a pattern to facilitate data compression; representing said pattern as four arrays; and compressing said plurality of elements from said arrays, and appropriate means and computer-readable instructions.

公开(公告)号：WO2006082395A1

公开(公告)日：2006-08-10

申请号：PCT/GB2006/000337

申请日：2006-02-01

Applicant: UNIVERSITY OF BRADFORD ,  UGAIL, Hassan

Inventor： UGAIL, Hassan

IPC: G06T17/30

CPC classification number: G06T17/30

Abstract: A surface patch of a 3D object (10) is represented by storing curve data (510) for a plurality of control curves (20) which act as boundary conditions to a partial differential equation (PDE) . Solving the PDE for the boundary conditions given by the control curves (20) accurately provides the PDE surface patch. Each of the control curves (20) is stored such as by Fourier coefficients or as coefficients of a finite Fourier series together with a difference vector field (R) . Optionally, the surface patch is also represented with a spine S stored as curve data such as polynomial coefficients.

Abstract translation: 3D对象（10）的表面贴片通过存储作为偏微分方程（PDE）的边界条件的多个控制曲线（20）的曲线数据（510）来表示。 解决由控制曲线（20）给出的边界条件的PDE准确地提供PDE表面贴片。 每个控制曲线（20）通过傅里叶系数或与有限傅立叶级数的系数以及差矢量场（R）一起存储。 可选地，表面贴片也用存储为诸如多项式系数的曲线数据的脊柱S表示。

公开(公告)号：WO00011433A1

公开(公告)日：2000-03-02

申请号：PCT/JP1999/004408

申请日：1999-08-17

IPC: G01D1/16 ,  B21D5/01 ,  B29C45/76 ,  G01B21/20 ,  G06T17/30

CPC classification number: G01B21/20 ,  G06T17/30

Abstract: A method comprises A: dividing an original curved surface (S) into at most six curved-surface units by combinations of signs (+, 0, -) of the principal curvature (k1, k2) at points on the original curved surface (S), B: dividing a changed curved surface (S') into curved-surface units having the same boundaries in such a way as to correspond to the original curved surface (S), C: finding average normal vectors of the curved-surface units of the original and changed curved surfaces, D: finding the "warp" components and "twist" components of all the combinations of pairs of different curved-surface units of the original and changed curved surfaces, and E: finding the differences between the "warp" and "twist" components of the combinations of the original curved surface and those of the combinations of the changed curved surface. Thus the overall shapes and errors of the original and changed curved surfaces after forming such as CAD data are readily and objectively compared, and the overall shape of a free curved surface is evaluated without being influenced by local "wrinkles" and "cavities". The numerical calculation of this method is easy, and the method is hardly influenced by numerical error and measurement error and applicable even to parametric curved surface and point group.

Abstract translation: 一种方法包括：通过在原始曲面（S 1）上的点处的主曲率（k1，k2）的符号（+，0， - ）的组合将原始曲面（S）分成最多六个曲面单位 ），B：将变化的曲面（S'）分割为具有相同边界的曲面单位，使其对应于原始曲面（S），C：找到曲面单位的平均法线向量 的原始和改变的曲面，D：找到原始和改变曲面的不同曲面单元对的所有组合的“翘曲”分量和“扭转”分量，E：找到“ 原始曲面的组合和变化的曲面的组合的“翘曲”和“扭转”分量。 因此，容易且客观地比较诸如CAD数据的成形之后的原始和改变的曲面的整体形状和误差，并且评估自由曲面的整体形状而不受局部“皱纹”和“空腔”的影响。 该方法的数值计算很容易，该方法几乎不受数值误差和测量误差的影响，甚至适用于参数曲面和点组。