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    Method and system for manipulating a three-dimensional object utilizing a force feedback interface
    1.
    发明授权
    Method and system for manipulating a three-dimensional object utilizing a force feedback interface 失效
    利用力反馈界面来操纵三维物体的方法和系统

    公开(公告)号：US5973678A

    公开(公告)日：1999-10-26

    申请号：US921132

    申请日：1997-08-29

    申请人： Paul Joseph Stewart ,  Yifan Chen ,  Pietro Buttolo

    发明人： Paul Joseph Stewart ,  Yifan Chen ,  Pietro Buttolo

    IPC分类号： G06F3/00 ,  G06F3/01 ,  G09G5/00

    CPC分类号： G06F3/016 ,  G06F3/011 ,  G05B2219/34141 ,  G05B2219/40619

    摘要： A method and system for manipulating a three-dimensional object in a computer-aided design (CAD) environment utilizes a force feedback interface. A gravitational sphere is defined around each of the plurality of input parameters of a mathematical model defining a shape, location and orientation of the object. A force is applied to the force feedback interface based on the gravitational spheres and the position of the force feedback interface. An input signal is received from the force feedback interface based on the applied force indicating selection of one of the plurality of input parameters. The selected input parameter can then be edited according to an edit signal generated by the user via the force feedback interface. In addition, the edit signal can be limited according to predetermined constraints via the force feedback interface.

    摘要翻译： 用于在计算机辅助设计（CAD）环境中操纵三维物体的方法和系统利用力反馈界面。 围绕限定对象的形状，位置和取向的数学模型的多个输入参数中的每一个定义重力球。 基于重力球和力反馈界面的位置将力施加到力反馈界面。 基于所述施加的力，从所述力反馈接口接收输入信号，所述力指示所述多个输入参数之一的选择。 然后可以根据用户通过力反馈界面产生的编辑信号来编辑所选择的输入参数。 此外，可以经由力反馈界面根据预定的约束来限制编辑信号。

    System and method for design of experiments using direct surface manipulation of a mesh model
    2.
    发明授权
    System and method for design of experiments using direct surface manipulation of a mesh model 有权

    公开(公告)号：US07079996B2

    公开(公告)日：2006-07-18

    申请号：US09681732

    申请日：2001-05-30

    申请人： Paul Joseph Stewart ,  Pietro Buttolo ,  Yifan Chen

    发明人： Paul Joseph Stewart ,  Pietro Buttolo ,  Yifan Chen

    IPC分类号： G06G7/48

    CPC分类号： G06F17/5095 ,  G06F17/5018 ,  G06T17/20

    摘要： A system and method for design of experiments (DOE) using direct surface manipulation of a mesh model. The method includes the steps of selecting a geometric model in a computer-aided design (CAD) format, converting the geometric model into a mesh model and evaluating the mesh model using a computer-aided engineering (CAE) analysis. The method also includes the steps of determining whether to continue generating the design of experiments response, and modifying a surface of the mesh model by varying a predetermined parameter, wherein the surface is modified using direct surface manipulation (DSM), the mesh model is updated and the updated mesh model is used in continuing generating the design of experiments response, if determined to continue the design of experiments. The method further includes the steps of using the results of the CAE analysis for the design of experiments.

    Method of real-time collision detection between solid geometric models
    3.
    发明授权
    Method of real-time collision detection between solid geometric models 失效
    实体几何模型之间的实时碰撞检测方法

    公开(公告)号：US07191104B2

    公开(公告)日：2007-03-13

    申请号：US10193566

    申请日：2002-07-11

    申请人： Paul Joseph Stewart ,  Pietro Buttolo

    发明人： Paul Joseph Stewart ,  Pietro Buttolo

    IPC分类号： G06F7/60

    CPC分类号： G06F3/016 ,  A63F2300/1037 ,  A63F2300/643 ,  G06F3/011 ,  G06T19/20 ,  G06T2210/21 ,  G06T2210/28 ,  G06T2219/2016

    摘要： A system and method of real-time collision detection between solid geometric objects is provided. The system includes a computer system, a computer-generated geometric model and a haptic device in communication with the computer system having a haptic end effector for transmitting information between a user and the geometric objects. The method includes the steps of representing a moving object as a point cloud and a stationary object as a mesh, and partitioning the mesh into an organized data structure. The method also includes the steps of identifying a constraint set and a collision set. The method further includes the steps of rendering the constraint set by moving the moving object so that the set of active points do not penetrate into the mesh, and providing force feedback through the haptic device relative to the movement of the moving object to satisfy the constraint.

    摘要翻译： 提供了实体几何对象之间实时碰撞检测的系统和方法。 该系统包括计算机系统，计算机生成的几何模型和与具有用于在用户和几何对象之间传送信息的触觉末端执行器的计算机系统通信的触觉装置。 该方法包括将作为点云的移动对象和作为网格的静止对象表示为步骤，以及将网格划分为有组织的数据结构。 该方法还包括识别约束集和冲突集的步骤。 该方法还包括以下步骤：通过移动移动物体来渲染约束集，使得该组有效点不穿透网格，并通过触觉装置相对于移动物体的运动提供力反馈以满足约束 。

    System and method of interactive evaluation of a geometric model
    4.
    发明授权
    System and method of interactive evaluation of a geometric model 有权

    公开(公告)号：US07155673B2

    公开(公告)日：2006-12-26

    申请号：US09775368

    申请日：2001-02-01

    申请人： Paul Joseph Stewart ,  Pietro Buttolo ,  Yifan Chen

    发明人： Paul Joseph Stewart ,  Pietro Buttolo ,  Yifan Chen

    IPC分类号： G06F3/00 ,  G06F9/00 ,  G06F17/00 ,  G09G5/00

    CPC分类号： G06F3/016

    摘要： A system and method of interactive evaluation of a geometric model is provided. The method includes the steps of acquiring a haptic device position and orientation with respect to a surface of the geometric model and mapping the haptic device position and orientation into a geometric model coordinate reference system. The method also includes the steps of determining a closest point position and orientation on the surface of the geometric model to the haptic device position and extracting a surface property at the closest point position and orientation. The method further includes the steps of determining a stick-to-surface force and a property feedback force using the surface property at the closet point position and orientation and applying the stick-to-surface force and property feedback force to control a location and force output of the haptic device.

    Method for reconstructing the topology of a polygonal soup
    6.
    发明授权
    Method for reconstructing the topology of a polygonal soup 有权
    重建多边形汤的拓扑的方法

    公开(公告)号：US06889176B1

    公开(公告)日：2005-05-03

    申请号：US09624106

    申请日：2000-07-24

    申请人： Pietro Buttolo ,  Paul Joseph Stewart

    发明人： Pietro Buttolo ,  Paul Joseph Stewart

    IPC分类号： G06F17/50 ,  G06T17/20

    CPC分类号： G06F17/50 ,  G06T17/20 ,  G06T17/205

    摘要： A method for automatically reconstructing topographical information for a given mesh, altering the mesh by introducing, deleting, or splitting existing polygons when needed. An OctTree space decomposition is used to achieve a log2-complexity search method to find the closest vertex in the polygonal soup to a given point in space. Linear complexities are used to find triangles connected to a given vertex and all triangles connected to a given triangle. The triangles are split to enforce conductivity.

    摘要翻译： 一种用于自动重建给定网格的地形信息的方法，通过在需要时引入，删除或拆分现有的多边形来改变网格。 使用OctTree空间分解来实现log2复杂搜索方法，以便在多边形汤中找到最接近的顶点到空间中的给定点。 线性复杂度用于查找连接到给定顶点的三角形和连接到给定三角形的所有三角形。 三角形被分割以实现电导率。

    System and method of interactive evaluation and manipulation of a geometric model
    7.
    发明授权
    System and method of interactive evaluation and manipulation of a geometric model 有权
    交互式评估和操纵几何模型的系统和方法

    公开(公告)号：US06801187B2

    公开(公告)日：2004-10-05

    申请号：US09888120

    申请日：2001-06-22

    申请人： Paul Joseph Stewart ,  Pietro Buttolo ,  Yifan Chen

    发明人： Paul Joseph Stewart ,  Pietro Buttolo ,  Yifan Chen

    IPC分类号： G09G500

    CPC分类号： G06F3/016 ,  G06T19/00 ,  G06T2200/24 ,  G06T2210/28

    摘要： A system and method of interactive evaluation and manipulation of a geometric model is provided. The system includes a computer system and a haptic interface operatively in communication with the computer system, whereby the haptic interface includes a haptic end effector device for transmitting information between a user and a geometric model as the user browses or edit the surface of the geometric model using the haptic end effector device.

    摘要翻译： 提供了一种交互式评估和操纵几何模型的系统和方法。 该系统包括可操作地与计算机系统通信的计算机系统和触觉接口，由此，触觉界面包括用于在用户浏览或编辑几何模型的表面之间在用户和几何模型之间传送信息的触觉端部执行器设备 使用触觉末端效应器装置。

    Hardware-supported secure network boot
    9.
    发明申请
    Hardware-supported secure network boot 审中-公开
    硬件支持的安全网络引导

    公开(公告)号：US20060129797A1

    公开(公告)日：2006-06-15

    申请号：US11012513

    申请日：2004-12-15

    申请人： Glenn Durfee ,  Dirk Balfanz ,  Diana Kathryn Smetters ,  Paul Joseph Stewart

    发明人： Glenn Durfee ,  Dirk Balfanz ,  Diana Kathryn Smetters ,  Paul Joseph Stewart

    IPC分类号： G06F9/24

    CPC分类号： G06F21/575

    摘要： Systems and methods for establishing an authenticated and encrypted network connection in a boot protocol, and specifying the boot image to be loaded by a client, are disclosed. A hardware token or other portable medium, such as a USB drive or device, CD, mini-CD, or floppy diskette, is used to store authentication and/or identification information for a server. A client uses the information on the token to authenticate the network server upon initial connection to the network and request a boot image. Furthermore, the client and server may use the authentication information from the token to establish secure communications and mutually authenticate each other.

    摘要翻译： 公开了用于在引导协议中建立经认证和加密的网络连接以及指定由客户机加载的引导映像的系统和方法。 使用诸如USB驱动器或设备，CD，mini-CD或软盘的硬件令牌或其他便携式介质来存储用于服务器的认证和/或识别信息。 客户端使用令牌上的信息在初始连接到网络并验证启动映像时对网络服务器进行身份验证。 此外，客户端和服务器可以使用来自令牌的认证信息来建立安全通信并相互认证。

    Texture mapping of photographic images to CAD surfaces
    10.
    发明授权
    Texture mapping of photographic images to CAD surfaces 失效
    摄影图像到CAD曲面的纹理映射

    公开(公告)号：US5898438A

    公开(公告)日：1999-04-27

    申请号：US746595

    申请日：1996-11-12

    申请人： Paul Joseph Stewart ,  Yifan Chen

    发明人： Paul Joseph Stewart ,  Yifan Chen

    IPC分类号： G06T19/00 ,  G06T11/40

    CPC分类号： G06T15/04

    摘要： A method for mapping a two-dimensional image of a physical object onto a computer generated three-dimensional surface defined by a plurality of surface points in a CAD space has the steps of creating a two-dimensional texture image plane of the physical object by taking a photograph of the physical object with a photographic device and converting the photograph into a texture image plane having a plurality of texture image plane points, determining a physical position of the photographic device with respect to the physical object, and transferring the texture image plane onto the three-dimensional surface. The transfer is accomplished by positioning a synthetic camera in the CAD space with respect to the three-dimensional surface according to the physical position of the photographic device, mapping each of the plurality of surface points viewable by the synthetic camera to a corresponding texture image point in the texture image plane, and assigning texture coordinates to each of the plurality of surface points from the corresponding texture image plane point.

    摘要翻译： 用于将物理对象的二维图像映射到由CAD空间中的多个表面点限定的计算机生成的三维表面上的方法具有以下步骤：通过采取物理对象来创建二维纹理图像平面 使用摄影装置拍摄物体的照片，并将照片转换为具有多个纹理图像平面点的纹理图像平面，确定摄影装置相对于物体的物理位置，并将纹理图像平面传送到 三维表面。 通过根据摄影装置的物理位置将合成相机相对于三维表面定位在CAD空间中来实现传送，将由合成相机可视的多个表面点中的每一个映射到对应的纹理图像点 在纹理图像平面中，并且从相应的纹理图像平面点将纹理坐标分配给多个表面点中的每一个。