公开(公告)号：US5966140A

公开(公告)日：1999-10-12

申请号：US880090

申请日：1997-06-20

申请人： Jovan Popovic ,  Hugues H. Hoppe

发明人： Jovan Popovic ,  Hugues H. Hoppe

IPC分类号： G06T17/20 ,  G06F15/00

CPC分类号： G06T17/20

摘要： A method for creating progressive simplicial complexes (PSC), including a new format for storing and transmitting arbitrary geometric models for computer graphics is presented. A PSC captures a graphical model as a coarse base model together with a sequence of refinement transformations that progressively recover detail. The PSC method uses general refinement transformations, allowing the given model to be an arbitrary triangulation of a complex shape, and the base model to be a single vertex. The PSC model defines a continuous sequence of approximating models for run-time level-of-detail control, allows smooth transitions between any pair of models in the sequence, supports compression, progressive transmission on computer network like the Internet or an intranet, and offers a space-efficient representation of an arbitrary geometric model.

摘要翻译： 提出了一种创建渐进单形复合（PSC）的方法，包括用于存储和传输用于计算机图形的任意几何模型的新格式。 PSC将图形模型捕获为粗略的基本模型以及逐渐恢复细节的细化变换序列。 PSC方法使用一般细化变换，允许给定模型作为复杂形状的任意三角测量，并将基本模型作为单个顶点。 PSC模型定义了运行时级别细节控制的连续逼近模型序列，允许序列中任意一对模型之间的平滑过渡，支持压缩，计算机网络上的逐行传输，如Internet或Intranet，并提供 任意几何模型的空间效率表示。

公开(公告)号：US20130127873A1

公开(公告)日：2013-05-23

申请号：US12956971

申请日：2010-11-30

申请人： Jovan Popovic ,  Sergey V. Levine

发明人： Jovan Popovic ,  Sergey V. Levine

IPC分类号： G06T13/80

CPC分类号： G06T13/40

摘要： An interactive application may include a quasi-physical simulator configured to determine the configuration of animated characters as they move within the application and are acted on by external forces. The simulator may work together with a parameterized animation module that synthesizes and provides reference poses for the animation from example motion clips that it has segmented and parameterized. The simulator may receive input defining a trajectory for an animated character and input representing one or more external forces acting on the character, and may perform a quasi-physical simulation to determine a pose for the character in the current animation frame in reaction to the external forces. The simulator may enforce a goal constraint that the animated character follows the trajectory, e.g., by adding a non-physical force to the simulation, the magnitude of which may be dependent on a torque objective that attempts to minimize the use of such non-physical forces.

摘要翻译： 交互式应用可以包括准物理模拟器，其被配置为当动画角色在应用内移动并且被外力作用时确定动画角色的配置。 模拟器可以与参数化的动画模块一起工作，该模块对已经分段和参数化的示例运动剪辑的动画进行合成并提供参考姿势。 模拟器可以接收定义用于动画角色的轨迹的输入和表示作用在角色上的一个或多个外力的输入，并且可以执行准物理模拟以确定当前动画帧中的角色的姿势以反应外部 军队。 模拟器可以强制执行动画角色遵循轨迹的目标约束，例如通过向模拟添加非物理力，其大小可以取决于试图将这种非物理学的使用最小化的扭矩目标 军队。

公开(公告)号：US20130120457A1

公开(公告)日：2013-05-16

申请号：US12714028

申请日：2010-02-26

申请人： Jovan Popovic ,  Jen-Chan Chien ,  Chintan Intwala ,  Sarah A. Kong

发明人： Jovan Popovic ,  Jen-Chan Chien ,  Chintan Intwala ,  Sarah A. Kong

IPC分类号： G09G5/00

CPC分类号： G06T3/0093 ,  G06T11/60

摘要： Methods and apparatus for manipulating digital images. A warping module is described that enables the manipulation of a surface by selectively deforming portions of the surface while maintaining local rigidity. The user may position multiple control points on a surface to constrain deformation. The user may specify multiple properties (e.g., translation, rotation, depth, and scale) at each control point. A mesh may be overlaid on the surface. The warping module may perform an initialization in which the properties are propagated other vertices in the mesh to generate an initial deformed mesh. The warping module may then perform an iterative optimization operation on the deformed mesh to improve the deformation while retaining local rigidity. Thus, instead of moving every pixel in the surface, the warping module moves or adjusts coordinates of the vertices of the mesh. The surface is then deformed according to the deformed mesh.

摘要翻译： 用于操纵数字图像的方法和装置。 描述了一种翘曲模块，其能够通过在保持局部刚性的同时选择性地使表面的部分变形来操纵表面。 用户可以在表面上放置多个控制点以约束变形。 用户可以在每个控制点处指定多个属性（例如，平移，旋转，深度和缩放）。 网格可以覆盖在表面上。 翘曲模块可以执行初始化，其中属性在网格中传播其他顶点以生成初始变形的网格。 然后，翘曲模块可以对变形的网格进行迭代优化操作，以改善变形，同时保持局部刚度。 因此，翘曲模块不是移动表面中的每个像素，而是移动或调整网格顶点的坐标。 然后根据变形的网格使表面变形。

公开(公告)号：US08860732B2

公开(公告)日：2014-10-14

申请号：US12956971

申请日：2010-11-30

申请人： Jovan Popovic ,  Sergey V. Levine

发明人： Jovan Popovic ,  Sergey V. Levine

IPC分类号： G06T13/00 ,  G06T13/40

CPC分类号： G06T13/40

摘要： An interactive application may include a quasi-physical simulator configured to determine the configuration of animated characters as they move within the application and are acted on by external forces. The simulator may work together with a parameterized animation module that synthesizes and provides reference poses for the animation from example motion clips that it has segmented and parameterized. The simulator may receive input defining a trajectory for an animated character and input representing one or more external forces acting on the character, and may perform a quasi-physical simulation to determine a pose for the character in the current animation frame in reaction to the external forces. The simulator may enforce a goal constraint that the animated character follows the trajectory, e.g., by adding a non-physical force to the simulation, the magnitude of which may be dependent on a torque objective that attempts to minimize the use of such non-physical forces.

摘要翻译： 交互式应用可以包括准物理模拟器，其被配置为当动画角色在应用内移动并且被外力作用时确定动画角色的配置。 模拟器可以与参数化的动画模块一起工作，该模块对已经分段和参数化的示例运动剪辑的动画进行合成并提供参考姿势。 模拟器可以接收定义用于动画角色的轨迹的输入和表示作用在角色上的一个或多个外力的输入，并且可以执行准物理模拟以确定当前动画帧中的角色的姿势以反应外部 军队。 模拟器可以强制执行动画角色遵循轨迹的目标约束，例如通过向模拟添加非物理力，其大小可以取决于试图将这种非物理学的使用最小化的扭矩目标 军队。