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    System and method of interactive evaluation of a geometric model
    21.
    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

    Applicant: Paul Joseph Stewart ,  Pietro Buttolo ,  Yifan Chen

    Inventor： Paul Joseph Stewart ,  Pietro Buttolo ,  Yifan Chen

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

    CPC classification number: G06F3/016

    Abstract: 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.

    System and method of interactive evaluation and manipulation of a geometric model
    22.
    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

    Applicant: Paul Joseph Stewart ,  Pietro Buttolo ,  Yifan Chen

    Inventor： Paul Joseph Stewart ,  Pietro Buttolo ,  Yifan Chen

    IPC: G09G500

    CPC classification number: G06F3/016 ,  G06T19/00 ,  G06T2200/24 ,  G06T2210/28

    Abstract: 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.

    Abstract translation: 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。

    Method for lens distortion correction of photographic images for texture mapping
    23.
    发明授权
    Method for lens distortion correction of photographic images for texture mapping 失效
    用于纹理映射的摄影图像的透镜畸变校正方法

    公开(公告)号：US5878174A

    公开(公告)日：1999-03-02

    申请号：US746591

    申请日：1996-11-12

    Applicant: Paul Joseph Stewart ,  Yifan Chen

    Inventor： Paul Joseph Stewart ,  Yifan Chen

    IPC: G06T5/00 ,  G06T7/00 ,  G06T15/04 ,  G06K9/00

    CPC classification number: G06T5/006 ,  G06T15/04

    Abstract: A method for correcting lens distortion in a photographic image used in texture mapping a CAD image uses a one-dimensional distortion correction curve. The photographic image is represented by an original texture image plane having a plurality of original points produced by a photographic device having a lens. The method has the steps of marking a plurality of data points in a predefined two-dimensional physical wall space and determining a wall space radial distance for each of the plurality of data points, taking a test photograph of the wall space with the photographic device, converting the test photograph to a digital two-dimensional image space, determine an image space radial distance for each of the plurality of data points in the image space, curve fitting the wall space radial distance and the corresponding image space radial distance pairs for each of the plurality of data points, and mapping each of the plurality of original points to a corresponding corrected point with the distortion correction curve so as to produce a corrected texture image plane having a plurality of corrected points.

    Abstract translation: 用于校正在CAD图像的纹理映射中使用的摄影图像中的透镜变形的方法使用一维失真校正曲线。 摄影图像由具有由具有透镜的照相装置产生的多个原始点的原始纹理图像平面表示。 该方法具有以下步骤：在预定的二维物理空间中标记多个数据点，并且确定多个数据点中的每个数据点的壁空间径向距离，使用照相装置拍摄壁空间的测试照片， 将测试照片转换为数字二维图像空间，确定图像空间中的多个数据点中的每一个的图像空间径向距离，对每个图像空间中的每一个确定壁空间径向距离和相应图像空间径向距离对的曲线 多个数据点，并将多个原始点中的每一个映射到具有失真校正曲线的对应的校正点，以便产生具有多个校正点的校正纹理图像平面。

    SWITCH FEEL MEASUREMENT APPARATUS
    27.
    发明申请
    SWITCH FEEL MEASUREMENT APPARATUS 有权
    开关感应测量装置

    公开(公告)号：US20080127747A1

    公开(公告)日：2008-06-05

    申请号：US11607533

    申请日：2006-12-01

    Applicant: Yifan Chen ,  Pietro Buttolo ,  Basavaraj Tonshal ,  James Rankin ,  Gary Strumolo

    Inventor： Yifan Chen ,  Pietro Buttolo ,  Basavaraj Tonshal ,  James Rankin ,  Gary Strumolo

    IPC: G01R11/32

    CPC classification number: G01L3/1478 ,  G01L5/0095

    Abstract: A measuring system that relate to the measurement of relatively small one degree of freedom mechanisms, such as pivoting and rotary switches, is disclosed. In particular end effectors and a kit for assembling various end effector assemblies is disclosed, that allow for accurate measurement of torque versus angular displacement curves for various types of pivoting and rotary switches.

    Abstract translation: 公开了一种与诸如枢转和旋转开关之类的相对较小的一个自由度机构的测量有关的测量系统。 特别地，公开了端部执行器和用于组装各种末端执行器组件的套件，其允许针对各种类型的枢转和旋转开关的扭矩对角位移曲线的精确测量。

    Switch Feel Measurement System Calibration
    28.
    发明申请
    Switch Feel Measurement System Calibration 有权
    开关感觉测量系统校准

    公开(公告)号：US20070295106A1

    公开(公告)日：2007-12-27

    申请号：US11382403

    申请日：2006-05-09

    Applicant: Pietro Buttolo ,  James Rankin ,  Yifan Chen

    Inventor： Pietro Buttolo ,  James Rankin ,  Yifan Chen

    IPC: G01L3/00

    CPC classification number: G01L5/0042

    Abstract: A method may be employed to assure that a switch measurement system accurately measures a torque/angular displacement profile for a rotary switch. A procedure may be employed that aligns the rotational axis of the switch with the rotational axis of the measurement unit of the switch measurement system. Also a procedure may be employed that monitors secondary forces to assure that proper alignment and calibration has been achieved.

    Abstract translation: 可以采用一种方法来确保开关测量系统精确地测量用于旋转开关的扭矩/角位移曲线。 可以采用将开关的旋转轴与开关测量系统的测量单元的旋转轴对准的过程。 还可以采用监视次级力以确保已经实现适当对准和校准的程序。

    System and method for design of experiments using direct surface manipulation of a mesh model
    29.
    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

    Applicant: Paul Joseph Stewart ,  Pietro Buttolo ,  Yifan Chen

    Inventor： Paul Joseph Stewart ,  Pietro Buttolo ,  Yifan Chen

    IPC: G06G7/48

    CPC classification number: G06F17/5095 ,  G06F17/5018 ,  G06T17/20

    Abstract: 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.

    System and method for forming geometric features using global reparametrization
    30.
    发明授权
    System and method for forming geometric features using global reparametrization 失效
    使用全局重新配准形成几何特征的系统和方法

    公开(公告)号：US5903458A

    公开(公告)日：1999-05-11

    申请号：US869321

    申请日：1997-06-06

    Applicant: Paul Joseph Stewart ,  Yifan Chen

    Inventor： Paul Joseph Stewart ,  Yifan Chen

    IPC: G06T17/30 ,  G06F19/00 ,  G06G7/64 ,  G06G7/66

    CPC classification number: G06T17/30

    Abstract: An improved Direct Surface Manipulation (DSM) method is disclosed which incorporates a global surface reparametrization scheme for the purposes of extending the DSM method to applications involving multiple surfaces and for reducing the geometric effect of parametric space distortions on the features. This method reparametrizes multiple surface patches with a shared two-dimensional space defined in the object space of the model. The result is a geometrically consistent mesh, called a super-mesh, that serves as a global, uniform parametric space for topologically-disconnected, geometrically-disproportional surface patches. Spherical projection is employed to perform the patch reparametrization. This allows the creation of DSM features on multiple surface patches with improved shape quality.

    Abstract translation: 公开了改进的直接表面操纵（DSM）方法，其包括全局表面重新配置方案，用于将DSM方法扩展到涉及多个表面的应用并且用于减小参数空间失真对特征的几何效应。 该方法用模型对象空间中定义的共享二维空间来重新分配多个表面贴片。 结果是几何一致的网格，称为超网格，用作拓扑不连续的，几何不成比例的表面补丁的全局均匀参数空间。 采用球形投影进行补片重新参数化。 这允许在具有改进的形状质量的多个表面贴片上创建DSM特征。

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