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61. 发明授权

US07286135B2 Optimizing real-time rendering of texture mapped object models relative to adjustable distortion thresholds 有权
标题翻译：优化纹理映射对象模型相对于可调失真阈值的实时渲染
公开(公告)号：US07286135B2
公开(公告)日：2007-10-23
申请号：US10990244
申请日：2004-11-15
申请人： Xi Wang , Xin Tong , Stephen Lin , Baining Guo , Heung-Yeung Shum
发明人： Xi Wang , Xin Tong , Stephen Lin , Baining Guo , Heung-Yeung Shum
IPC分类号： G09G5/00 , G06T17/00 , G06T15/60 , G06T15/50
CPC分类号： G06T15/04
摘要： A “mesostructure renderer” uses pre-computed multi-dimensional “generalized displacement maps” (GDM) to provide real-time rendering of general non-height-field mesostructures on both open and closed surfaces of arbitrary geometry. In general, the GDM represents the distance to solid mesostructure along any ray cast from any point within a volumetric sample. Given the pre-computed GDM, the mesostructure renderer then computes mesostructure visibility jointly in object space and texture space, thereby enabling both control of texture distortion and efficient computation of texture coordinates and shadowing. Further, in one embodiment, the mesostructure renderer uses the GDM to render mesostructures with either local or global illumination as a per-pixel process using conventional computer graphics hardware to accelerate the real-time rendering of the mesostructures. Further acceleration of mesostructure rendering is achieved in another embodiment by automatically reducing the number of triangles in the rendering pipeline according to a user-specified threshold for acceptable texture distortion.
摘要翻译： “mesostructure渲染器”使用预先计算的多维“广义位移图”（GDM），以便在任意几何的开放和闭合表面上提供一般非高度场介观结构的实时渲染。一般来说，GDM表示沿着体积样品内的任何点的任何射线投射到固体介观结构的距离。给定预先计算的GDM，然后，介观结构渲染器在对象空间和纹理空间中联合计算介观结构可见度，从而实现纹理失真的控制和纹理坐标和阴影的有效计算。此外，在一个实施例中，使用传统计算机图形硬件的介面结构渲染器使用GDM来渲染具有局部或全局照明的介观结构作为每像素处理，以加速介观结构的实时渲染。在另一个实施例中，通过根据用户指定的可接受纹理失真的阈值自动减少渲染流水线中的三角形数量来实现进一步加速的介观结构渲染。

62. 发明授权

US07266478B2 Knitwear modeling 失效
标题翻译：针织造型
公开(公告)号：US07266478B2
公开(公告)日：2007-09-04
申请号：US10850653
申请日：2004-05-21
申请人： Ying-Qing Xu , Baining Guo , Hua Zhong , Heung-Yeung Shum
发明人： Ying-Qing Xu , Baining Guo , Hua Zhong , Heung-Yeung Shum
IPC分类号： G06F17/50
CPC分类号： D04B37/00
摘要： Knitwear modeling is disclosed. A macrostructure corresponding to a three-dimensional object is generated, based on a stitch pattern and optionally a color pattern. Yarn microstructure is generated and applied to the macrostructure to yield a knitwear model. The stitch positions of the macrostructure can be perturbed to achieve stitch position irregularities. The fluffiness of the yarn microstructure can be controlled. In an alternative embodiment, a two-dimensional knitwear texture is generated, which can then be mapped to a three-dimensional object to yield a knitwear model.
摘要翻译：披露了针织品造型。基于针迹图案和可选的颜色图案，生成对应于三维物体的宏观结构。生产纱线微观结构并应用于宏观结构以产生针织品模型。可以扰动宏观结构的缝合位置以达到缝合位置不规则。可以控制纱线微结构的蓬松性。在替代实施例中，生成二维针织品纹理，然后将其映射到三维对象以产生针织品模型。

63. 发明授权

US07164424B2 Interactive water effects using texture coordinate shifting 失效
标题翻译：使用纹理坐标移动的互动水效果
公开(公告)号：US07164424B2
公开(公告)日：2007-01-16
申请号：US11113208
申请日：2005-04-22
申请人： Lin Liang , Yanyun Chen , Ying-Qing Xu , Baining Guo , Heung-Yeung Shum
发明人： Lin Liang , Yanyun Chen , Ying-Qing Xu , Baining Guo , Heung-Yeung Shum
IPC分类号： G06T13/00
CPC分类号： G06T13/60 , G06T13/80 , G06T15/04 , G06T2210/24 , H04N5/262
摘要： A system and process for adding a photorealistic rendering of a body of water to a virtual 3D scene or image and creating a video therefrom having interactive water effects. A region of water is added to an image by adding an area depicting the original scene as it would appear if reflected by still body of water. Then, the appearance of the added water region is distorted over a series of image frames in such a way as to simulate how the reflected scene would look if the surface of the water were in motion. The water can have dynamic waves and the user can interact with the water in numbers of ways, including generating ripples on the water surface and creating rain. In addition, these effects can be achieved at full screen resolution with the use of the latest graphics hardware by employing a texture shifting technique.
摘要翻译：一种用于向虚拟3D场景或图像添加水体的真实感渲染并从其创建具有交互式水效果的视频的系统和过程。通过添加描绘原始场景的区域，如水面反映的那样，将会显示水域。然后，增加的水域的外观在一系列图像帧上变形，以模拟如果水的表面运动，反射场景将如何看起来。水可以具有动态波，用户可以以多种方式与水相互作用，包括在水面上产生波纹并产生雨水。此外，通过采用纹理移位技术，通过使用最新的图形硬件，可以在全屏幕分辨率下实现这些效果。

64. 发明申请

US20070002056A1 Visual simulation of weathering by y-ton tracing 失效
标题翻译：通过y-ton跟踪进行风化的视觉模拟
公开(公告)号：US20070002056A1
公开(公告)日：2007-01-04
申请号：US11174439
申请日：2005-07-01
申请人： Yanyun Chen , Xin Tong , Baining Guo , Heung-Yeung Shum
发明人： Yanyun Chen , Xin Tong , Baining Guo , Heung-Yeung Shum
IPC分类号： G06T15/70
CPC分类号： G06F17/5009 , G06F2217/10
摘要： An exemplary computer-implementable method includes providing a computer-generated object wherein the object has characteristics, emitting a computer-generated particle, determining if the particle interacts with the object and, if the particle interacts with the object, altering one or more of the characteristic of the object wherein the altering simulates weathering or aging of the object. Various other exemplary techniques are also disclosed.
摘要翻译：示例性的可计算机可实现的方法包括提供计算机生成的对象，其中对象具有特征，发射计算机生成的粒子，确定粒子是否与对象相互作用，以及如果粒子与对象相互作用，则改变一个或多个其特征在于，其中改变模拟物体的风化或老化。还公开了各种其它示例性技术。

65. 发明申请

US20060290719A1 Representing quasi-homogenous materials 有权
标题翻译：代表准同质材料
公开(公告)号：US20060290719A1
公开(公告)日：2006-12-28
申请号：US11166559
申请日：2005-06-24
申请人： Xin Tong , Jiaping Wang , Stephen Lin , Baining Guo , Heung-Yeung Shum
发明人： Xin Tong , Jiaping Wang , Stephen Lin , Baining Guo , Heung-Yeung Shum
IPC分类号： G09G5/00 , G09G5/02
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。

66. 发明授权

US07149368B2 System and method for synthesis of bidirectional texture functions on arbitrary surfaces 有权
标题翻译：用于在任意表面上合成双向纹理函数的系统和方法
公开(公告)号：US07149368B2
公开(公告)日：2006-12-12
申请号：US10299623
申请日：2002-11-19
申请人： Xin Tong , Ligang Liu , Baining Guo , Heung-Yeung Shum
发明人： Xin Tong , Ligang Liu , Baining Guo , Heung-Yeung Shum
IPC分类号： G06K9/36
CPC分类号： G06T15/04
摘要： A bidirectional texture function (BTF) synthesizer serves to synthesize BTFs on arbitrary manifold surfaces using “surface textons” given a sample BTF as an input. The synthesized BTFs fit the surface geometry naturally and seamlessly, and not only look similar to a sample BTF in all viewing and lighting conditions, but also exhibit a consistent mesostructure when the viewing and lighting directions change. Further, the synthesized BTFs capture the fine-scale shadows, occlusions, and specularities caused by surface mesostructures, thereby improving the perceived realism of the textured surfaces. In addition, the BTF synthesizer can describe real-world textures to allow a user to decorate real-world geometry with real-world textures. Finally, BTF synthesis using surface textons works well for any materials that can be described by three-dimensional textons.
摘要翻译：双向纹理函数（BTF）合成器用于在给定样本BTF作为输入的情况下使用“表面纹理”合成任意歧管表面上的BTF。合成的BTF自然无缝地适应表面几何，并且在所有观察和照明条件下不仅看起来类似于样品BTF，而且在观察和照明方向改变时也表现出一致的介观结构。此外，合成的BTF捕获由表面介观结构引起的微小尺度的阴影，遮挡物和镜面反射，从而改善纹理表面的感知现实性。此外，BTF合成器可以描述真实世界的纹理，以允许用户使用真实世界纹理来装饰真实世界的几何。最后，使用表面纹理的BTF合成对于可以由三维文本描述的任何材料起作用。

67. 发明授权

US06985156B2 System and process for optimal texture map reconstruction from multiple views 失效
标题翻译：用于从多个视图获得最佳纹理贴图重建的系统和过程
公开(公告)号：US06985156B2
公开(公告)日：2006-01-10
申请号：US10875741
申请日：2004-06-23
申请人： Lifeng Wang , Sing Bing Kang , Richard Szeliski , Heung-Yeung Shum , Baining Guo
发明人： Lifeng Wang , Sing Bing Kang , Richard Szeliski , Heung-Yeung Shum , Baining Guo
IPC分类号： G09G5/00
CPC分类号： G06T11/001
摘要： A system and process for reconstructing optimal texture maps from multiple views of a scene is described. In essence, this reconstruction is based on the optimal synthesis of textures from multiple sources. This is generally accomplished using basic image processing theory to derive the correct weights for blending the multiple views. Namely, the steps of reconstructing, warping, prefiltering, and resampling are followed in order to warp reference textures to a desired location, and to compute spatially-variant weights for optimal blending. These weights take into consideration the anisotropy in the texture projection and changes in sampling frequency due to foreshortening. The weights are combined and the computation of the optimal texture is treated as a restoration problem, which involves solving a linear system of equations. This approach can be incorporated in a variety of applications, such as texturing of 3D models, analysis by synthesis methods, super-resolution techniques, and view-dependent texture mapping.
摘要翻译：描述用于从场景的多个视图重建最佳纹理图的系统和过程。实质上，这种重建是基于来自多个源的纹理的最佳合成。这通常使用基本图像处理理论来实现，以导出用于混合多个视图的正确权重。即，遵循重构，翘曲，预过滤和重采样的步骤，以便将参考纹理扭曲到期望的位置，并计算用于最佳混合的空间变体权重。这些权重考虑到纹理投影中的各向异性和由于缩短引起的采样频率的变化。权重相结合，最优纹理的计算被视为恢复问题，其涉及求解线性方程组。这种方法可以并入各种应用中，例如3D模型的纹理化，通过合成方法的分析，超分辨率技术和视图相关的纹理映射。

68. 发明申请

US20060003823A1 Dynamic player groups for interest management in multi-character virtual environments 有权
公开(公告)号：US20060003823A1
公开(公告)日：2006-01-05
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： A63F13/00
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.

69. 发明申请

US20050280647A1 System and method for generating generalized displacement maps from mesostructure geometries 有权
标题翻译：从介观结构几何生成广义位移图的系统和方法
公开(公告)号：US20050280647A1
公开(公告)日：2005-12-22
申请号：US10990142
申请日：2004-11-15
申请人： Xi Wang , Xin Tong , Stephen Lin , Baining Guo , Heung-Yeung Shum
发明人： Xi Wang , Xin Tong , Stephen Lin , Baining Guo , Heung-Yeung Shum
IPC分类号： G06T15/20 , G06T15/50 , G06T15/60 , G06T17/00 , G09G5/00
CPC分类号： G06T15/04
摘要： A “mesostructure renderer” uses pre-computed multi-dimensional “generalized displacement maps” (GDM) to provide real-time rendering of general non-height-field mesostructures on both open and closed surfaces of arbitrary geometry. In general, the GDM represents the distance to solid mesostructure along any ray cast from any point within a volumetric sample. Given the pre-computed GDM, the mesostructure renderer then computes mesostructure visibility jointly in object space and texture space, thereby enabling both control of texture distortion and efficient computation of texture coordinates and shadowing. Further, in one embodiment, the mesostructure renderer uses the GDM to render mesostructures with either local or global illumination as a per-pixel process using conventional computer graphics hardware to accelerate the real-time rendering of the mesostructures. Further acceleration of mesostructure rendering is achieved in another embodiment by automatically reducing the number of triangles in the rendering pipeline according to a user-specified threshold for acceptable texture distortion.
摘要翻译： “mesostructure渲染器”使用预先计算的多维“广义位移图”（GDM），以便在任意几何的开放和闭合表面上提供一般非高度场介观结构的实时渲染。一般来说，GDM表示沿着体积样品内的任何点的任何射线投射到固体介观结构的距离。给定预先计算的GDM，然后，介观结构渲染器在对象空间和纹理空间中联合计算介观结构可见度，从而实现纹理失真的控制和纹理坐标和阴影的有效计算。此外，在一个实施例中，使用传统计算机图形硬件的介面结构渲染器使用GDM来渲染具有局部或全局照明的介观结构作为每像素处理，以加速介观结构的实时渲染。在另一个实施例中，通过根据用户指定的可接受纹理失真的阈值自动减少渲染流水线中的三角形数量来实现进一步加速的介观结构渲染。

70. 发明授权

US06961058B2 Macrostructure modeling with microstructure reflectance slices 失效
标题翻译：微结构反射切片的宏观结构建模
公开(公告)号：US06961058B2
公开(公告)日：2005-11-01
申请号：US09928257
申请日：2001-08-10
申请人： Baining Guo , Steve Lin , Heung-Yeung Shum , Ying-Qing Xu , Yanyun Chen
发明人： Baining Guo , Steve Lin , Heung-Yeung Shum , Ying-Qing Xu , Yanyun Chen
IPC分类号： G06T15/00 , G06T15/50 , G06T17/00 , G06T15/60
CPC分类号： G06T15/50 , G06T15/00 , G06T17/00 , G06T2210/16 , G06T2210/62
摘要： A method and system for efficient synthesis of photorealistic free-form knitwear, where a single cross-section of yarn serves as the basic primitive for modeling entire articles of knitwear. This primitive, called the lumislice, describes radiance from a yarn cross-section based on fine-level interactions, including occlusion, shadowing, and multiple scattering, among yarn fibers. By representing yarn as a sequence of identical but rotated cross-sections, the lumislice can effectively propagate local microstructure over arbitrary stitch patterns and knitwear shapes. This framework accommodates varying levels of detail and capitalizes on hardware-assisted transparency blending. To further enhance realism, a technique for generating soft shadows from yarn is also introduced.
摘要翻译：一种用于高效合成照片写实自由形式针织品的方法和系统，其中单个横截面的纱线用作对整个针织品的造型进行建模的基本原理。这种原始的，称为lumislice，描述了纱线横截面基于精细水平相互作用（包括闭合，遮蔽和多重散射）在纱线纤维之间的辐射。通过将纱线表示为相同但旋转的横截面的序列，光栅可以有效地将局部微结构传播到任意针迹图案和针织品形状上。该框架适应不同程度的细节，并利用硬件辅助的透明度混合。为了进一步增强现实主义，还引入了从纱线产生柔和阴影的技术。

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