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21. 发明授权

US07196711B2 View dependent displacement mapping 有权
标题翻译：查看依赖位移图
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。

22. 发明申请

US20050280646A1 Real-time texture rendering using generalized displacement maps 有权
标题翻译：使用广义位移图进行实时纹理渲染
公开(公告)号：US20050280646A1
公开(公告)日：2005-12-22
申请号：US10965603
申请日：2004-10-13
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。

23. 发明授权

US07310101B2 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：US07310101B2
公开(公告)日：2007-12-18
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： G09G5/00 , G06T15/20 , G06T15/60 , G06T17/00
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。

24. 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。

25. 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。

26. 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。

27. 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。

28. 发明申请

US20070229502A1 SHELL RADIANCE TEXTURE FUNCTION 有权
标题翻译：壳体辐射纹理功能
公开(公告)号：US20070229502A1
公开(公告)日：2007-10-04
申请号：US11277935
申请日：2006-03-29
申请人： Xin Tong , Yanyun Chen , Baining Guo , Heung-Yeung Shum , Stephen Lin , Ying Song
发明人： Xin Tong , Yanyun Chen , Baining Guo , Heung-Yeung Shum , Stephen Lin , Ying Song
IPC分类号： G06T15/50
CPC分类号： G06T15/55
摘要： A shell radiance texture function (SRTF) is defined to record an outgoing radiance from a base volume of an object to be rendered. Using the SRTF, radiance values are precomputed and stored for the base volume. The object is rendered using the precomputed radiance values.
摘要翻译：外壳辐射纹理函数（SRTF）被定义为记录要渲染的对象的基本卷的传出辐射。使用SRTF，辐射值被预先计算并存储为基本卷。使用预先计算的辐射值渲染对象。

29. 发明授权

US07184052B2 Real-time texture rendering using generalized displacement maps 有权
标题翻译：使用广义位移图进行实时纹理渲染
公开(公告)号：US07184052B2
公开(公告)日：2007-02-27
申请号：US10965603
申请日：2004-10-13
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： G06T17/00 , G06T15/60 , G09G5/00 , 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。

30. 发明授权

US09098945B2 Modeling anisotropic surface reflectance with microfacet synthesis 有权
标题翻译：用微量合成法建模各向异性表面反射
公开(公告)号：US09098945B2
公开(公告)日：2015-08-04
申请号：US12433910
申请日：2009-05-01
申请人： Jiaping Wang , Shuang Zhao , Xin Tong , John M. Snyder , Baining Guo
发明人： Jiaping Wang , Shuang Zhao , Xin Tong , John M. Snyder , Baining Guo
IPC分类号： G06T15/50
CPC分类号： G06T15/506
摘要： Described is a search technology in which spatially varying anisotropic reflectance is modeled using image data captured from a single view. Reflectance at each point is represented using a microfacet-based Bidirectional Reflectance Distribution Function (BRDF). Modeling processes the image data, which provides a partial normal distribution function (NDF) for each surface point. The NDF at each selected point is completed by texture synthesis using similar, overlapping partial NDFs from other points. Also described is a scanning device that illuminates a sample surface from a two-dimensional set of light directions using a linear array of LEDs moved over a flat sample.
摘要翻译：描述了一种搜索技术，其中使用从单个视图捕获的图像数据来建模空间变化的各向异性反射率。每个点的反射率使用基于微量的基于双向反射分布函数（BRDF）表示。建模处理图像数据，为每个表面点提供部分正态分布函数（NDF）。每个选定点的NDF通过纹理合成完成，使用与其他点相似的，重叠的部分NDF。还描述了使用在扁平样品上移动的LED的线性阵列从二维光方向照射样品表面的扫描装置。

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