公开(公告)号：US07602398B2

公开(公告)日：2009-10-13

申请号：US11045868

申请日：2005-01-28

申请人： Kun Zhou ,  Baining Guo ,  Heung-Yeung Shum ,  Lifeng Wang ,  Yasuyuki Matsushita

发明人： Kun Zhou ,  Baining Guo ,  Heung-Yeung Shum ,  Lifeng Wang ,  Yasuyuki Matsushita

IPC分类号： G09G5/00

CPC分类号： G06T15/04 ,  G06T17/20

摘要： Surfaces can be decorated with texture tiling and/or texture painting using one or more sample textures, such as BTFs. In a described implementation of texture tiling, a patch-based BTF synthesis algorithm is utilized. In an example embodiment, a mesh of a target surface is re-sampled to produce a dense mesh such that there is a one-to-one correspondence between vertices of the dense mesh and pixels of an image. Patch matching is then employed with a working image that corresponds to a working patch. In an example embodiment, the patch matching is effectuated using translations and rotations of the sample texture. In a described implementation of texture painting, irregular feature(s) of a sample texture are synthesized onto a target surface. In an example embodiment, user-specified constraints as to a desired foreground feature of a sample texture and an intended foreground region of a targeted surface are factored into a graphcut operation.

摘要翻译： 表面可以使用纹理拼贴和/或使用一个或多个样本纹理（如BTF）的纹理绘画进行装饰。 在所描述的纹理平铺的实现中，使用基于块的BTF合成算法。 在一个示例性实施例中，对目标表面的网格进行重新采样以产生密集网格，使得在密集网格的顶点和图像的像素之间存在一一对应关系。 然后使用补丁匹配与对应于工作补丁的工作图像。 在示例实施例中，使用样本纹理的平移和旋转来实现斑块匹配。 在所描述的纹理绘画实现中，样本纹理的不规则特征被合成到目标表面上。 在示例性实施例中，关于样本纹理的期望前景特征和目标表面的预期前景区域的用户指定约束被考虑到图形切割操作中。

公开(公告)号：US07589723B2

公开(公告)日：2009-09-15

申请号：US11189491

申请日：2005-07-25

申请人： Lifeng Wang ,  Xu Yang ,  Baining Guo ,  Heung-Yeung Shum

发明人： Lifeng Wang ,  Xu Yang ,  Baining Guo ,  Heung-Yeung Shum

IPC分类号： G06T15/50 ,  G06T15/60 ,  G09G5/00

CPC分类号： G06T15/50

摘要： Rendering of a partially translucent object is performed using a set of parameter maps derived from data measuring reflectance and transmittance of light received at the surface of the partially translucent object. Data is captured from an actual object being modeled, rather than estimated based on internal structure and composition. Parameter maps relating albedo, thickness variation, and specular intensity and roughness are stored as textures to facilitate rendering. In addition, realistic illumination from high energy sources such as sunlight is effected by separating light into low frequency and high frequency components. Low frequency components are rendered by precomputed radiance transfer. High frequency components, which are not modeled well by precomputed radiance transfer, are modeled using a light visibility convolution integral to generate light visibility maps for positions of the high frequency light source. Contributions from the different frequency components are combined to yield a realistic appearance.

摘要翻译： 使用从测量在部分半透明物体的表面处接收的光的反射率和透射率的数据导出的一组参数图来执行部分半透明物体的渲染。 数据从被建模的实际对象中获取，而不是基于内部结构和组合来估计。 将反照率，厚度变化以及镜面强度和粗糙度相关的参数图存储为纹理以便于渲染。 此外，通过将光分离成低频和高频分量来实现来自诸如阳光的高能源的现实照明。 低频分量通过预先计算的辐射传输来渲染。 通过预先计算的辐射传输良好地建模的高频分量使用光可见度卷积积分来建模，以产生高频光源的位置的光可见度图。 来自不同频率分量的贡献被组合以产生现实的外观。

公开(公告)号：US07545375B2

公开(公告)日：2009-06-09

申请号：US11679275

申请日：2007-02-27

申请人： Lifeng Wang ,  Xi Wang ,  Xin Tong ,  Baining Guo ,  Heung-Yeung Shum

发明人： Lifeng Wang ,  Xi Wang ,  Xin Tong ,  Baining Guo ,  Heung-Yeung Shum

IPC分类号： G06T15/10

CPC分类号： G06T15/04

摘要： A computer implemented method for generating a representation of structure for use in rendering a synthesized image is provided. The representation is a view-dependent displacement mapping that represents displacements along a viewing direction. This view dependency allows the representation to be used to determine self shadows as well as shading, occlusion and silhouettes when used during rendering for synthesis.

摘要翻译： 提供了一种用于生成用于渲染合成图像的结构的表示的计算机实现的方法。 该表示是视图相关的位移映射，其表示沿观察方向的位移。 该视图依赖性允许在用于合成的渲染期间使用表示来确定自身阴影以及阴影，遮挡和剪影。

公开(公告)号：US07537523B2

公开(公告)日：2009-05-26

申请号：US10882926

申请日：2004-06-30

申请人： Bo Zhang ,  Baining Guo ,  Heung-Yeung Shum

发明人： Bo Zhang ,  Baining Guo ,  Heung-Yeung Shum

IPC分类号： A63F9/24 ,  G06F15/16

CPC分类号： A63F13/358 ,  A63F13/12 ,  A63F13/57 ,  A63F2300/534 ,  A63F2300/535 ,  A63F2300/64

摘要： A method and apparatus improve the efficiency of simulating a virtual environment by filtering information about the virtual environment on a group basis instead of a character basis. The filtered information is sent to each client associated with a character in the group.

摘要翻译： 一种方法和装置通过基于组而不是基于字符的过滤关于虚拟环境的信息来提高模拟虚拟环境的效率。 被过滤的信息被发送到与组中的字符相关联的每个客户端。

公开(公告)号：US07391421B2

公开(公告)日：2008-06-24

申请号：US11196893

申请日：2005-08-04

申请人： Baining Guo ,  Bo Zhang ,  Heung-Yeung Shum

发明人： Baining Guo ,  Bo Zhang ,  Heung-Yeung Shum

IPC分类号： G06T15/00

CPC分类号： G06T13/40 ,  G10L2021/105

摘要： A video rewrite technique for rendering a talking head or agent completely simulates a conversation by including a waiting or listening state. Smooth transitions are provided to and from a talking state.

摘要翻译： 用于呈现谈话头或者代理的视频重写技术通过包括等待或收听状态来完全模拟对话。 提供平稳的过渡到和从谈话状态。

公开(公告)号：US07358978B2

公开(公告)日：2008-04-15

申请号：US10918840

申请日：2004-08-13

申请人： Baining Guo ,  Bo Zhang ,  Heung-Yeung Shum ,  Ligang Liu

发明人： Baining Guo ,  Bo Zhang ,  Heung-Yeung Shum ,  Ligang Liu

IPC分类号： G09G5/00

CPC分类号： G06T13/80 ,  G06T2210/44

摘要： An approach for morphing between planar shapes is disclosed. Correspondences are established between perceptual feature points that are extracted from both source and target shapes. A similarity metric between two feature points is defined using the intrinsic properties of their local neighborhoods. The optimal correspondence is found by an efficient dynamic programming technique. This approach treats shape noise by allowing the discarding of small feature points, which introduces skips in the traversal of the dynamic programming graph. Intermediate shapes are obtained by interpolating the overall shapes constructed by feature points and the detailed information of the shapes respectively.

摘要翻译： 公开了一种在平面形状之间变形的方法。 在从源和目标形状提取的知觉特征点之间建立对应关系。 两个特征点之间的相似性度量使用其本地邻域的固有属性来定义。 通过有效的动态规划技术找到最佳对应关系。 这种方法通过允许丢弃小特征点来处理形状噪声，这引起了遍历动态规划图的跳跃。 通过内插由特征点构成的整体形状和形状的详细信息来获得中间形状。

公开(公告)号：US20070297646A1

公开(公告)日：2007-12-27

申请号：US11679275

申请日：2007-02-27

申请人： Lifeng Wang ,  Xi Wang ,  Xing Tong ,  Baining Guo ,  Heung-Yeung Shum

发明人： Lifeng Wang ,  Xi Wang ,  Xing Tong ,  Baining Guo ,  Heung-Yeung Shum

IPC分类号： G06K9/00

CPC分类号： G06T15/04

摘要： A computer implemented method for generating a representation of structure for use in rendering a synthesized image is provided. The representation is a view-dependent displacement mapping that represents displacements along a viewing direction. This view dependency allows the representation to be used to determine self shadows as well as shading, occlusion and silhouettes when used during rendering for synthesis.

摘要翻译： 提供了一种用于生成用于渲染合成图像的结构的表示的计算机实现的方法。 该表示是视图相关的位移映射，其表示沿观察方向的位移。 该视图依赖性允许在用于合成的渲染期间使用表示来确定自身阴影以及阴影，遮挡和剪影。

公开(公告)号：US07312797B2

公开(公告)日：2007-12-25

申请号：US11166559

申请日：2005-06-24

申请人： Xin Tong ,  Jiaping Wang ,  Stephen S. Lin ,  Baining Guo ,  Heung-Yeung Shum

发明人： Xin Tong ,  Jiaping Wang ,  Stephen S. Lin ,  Baining Guo ,  Heung-Yeung Shum

IPC分类号： G06T11/00

CPC分类号： G06T11/001 ,  G01N21/4795 ,  G06T15/506

摘要： Representing quasi-homogenous materials is described. In one aspect, quasi-homogenous materials are modeled to generate a material model of a physical sample. The material model identifies how light is scattered by the quasi-homogenous materials. The material model, independent of an object model of the physical sample, provides information that is useful to texture surfaces of arbitrary types and sizes of mesh models (e.g., representing the physical sample or other objects) with the quasi-homogenous materials.

摘要翻译： 描述了准均匀材料。 在一个方面，准均质材料被建模以产生物理样品的材料模型。 材料模型通过准均质材料识别光如何散射。 材料模型独立于物理样本的对象模型，提供了有用于使用准均质材料对任意类型和大小的网格模型（例如，表示物理样本或其他对象）的表面进行纹理的信息。

公开(公告)号：US07196711B2

公开(公告)日：2007-03-27

申请号：US10698909

申请日：2003-10-31

申请人： Lifeng Wang ,  Xi Wang ,  Xin Tong ,  Baining Guo ,  Heung-Yeung Shum

发明人： Lifeng Wang ,  Xi Wang ,  Xin Tong ,  Baining Guo ,  Heung-Yeung Shum

IPC分类号： G09G5/00

CPC分类号： G06T15/04

摘要： A computer implemented method for generating a representation of structure for use in rendering a synthesized image is provided. The representation is a view-dependent displacement mapping that represents displacements along a viewing direction. This view dependency allows the representation to be used to determine self shadows as well as shading, occlusion and silhouettes when used during rendering for synthesis.

摘要翻译： 提供了一种用于生成用于渲染合成图像的结构的表示的计算机实现的方法。 该表示是视图相关的位移映射，其表示沿观察方向的位移。 该视图依赖性允许在用于合成的渲染期间使用表示来确定自身阴影以及阴影，遮挡和剪影。

公开(公告)号：US20060290693A1

公开(公告)日：2006-12-28

申请号：US11158428

申请日：2005-06-22

申请人： Kun Zhou ,  John Snyder ,  Xinguo Liu ,  Baining Guo ,  Heung-Yeung Shum

发明人： Kun Zhou ,  John Snyder ,  Xinguo Liu ,  Baining Guo ,  Heung-Yeung Shum

IPC分类号： G06T17/00 ,  G06T17/20 ,  G06T15/30

CPC分类号： G06T17/20 ,  G06T13/20

摘要： Large mesh deformation using the volumetric graph Laplacian is described. In one aspect, information is received from a user, wherein the information indicates how an original mesh is to be deformed. The original mesh is then deformed based on the information and application of a volumetric differential operator to a volumetric graph generated from the original mesh.

摘要翻译： 描述了使用体积图拉普拉斯算子的大网格变形。 在一个方面，从用户接收信息，其中信息指示原始网格如何变形。 然后将原始网格基于体积差分算子的信息和应用变形为从原始网格生成的体积图。