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21. 发明授权

US07940268B2 Real-time rendering of light-scattering media 有权
标题翻译：实时渲染光散射介质
公开(公告)号：US07940268B2
公开(公告)日：2011-05-10
申请号：US11770942
申请日：2007-06-29
申请人： Kun Zhou , Qiming Hou , Minmin Gong , John Michael Snyder , Baining Guo , Heung-Yeung Shum
发明人： Kun Zhou , Qiming Hou , Minmin Gong , John Michael Snyder , Baining Guo , Heung-Yeung Shum
IPC分类号： G06T15/50 , G06T15/00
CPC分类号： G06T15/506
摘要： A real-time algorithm for rendering an inhomogeneous scattering medium such as fog is described. An input media animation is represented as a sequence of density fields, each of which is decomposed into a weighted sum of a set of radial basis functions (RBFs) such as Gaussians. The algorithm computes airlight and surface reflectance of the inhomogeneous scattering medium. Several approximations are taken which lead to analytical solutions of quantities such as an optical depth integrations and single scattering integrations, and a reduced number of integrations that need to be calculated. The resultant algorithm is able to render inhomogeneous media including their shadowing and scattering effects in real time. The algorithm may be adopted for a variety of light sources including point lights and environmental lights.
摘要翻译：描述了用于渲染非均匀散射介质（如雾）的实时算法。输入媒体动画被表示为密度字段的序列，每个密度字段被分解成一组径向基函数（RBF）如Gauss的加权和。该算法计算不均匀散射介质的气孔和表面反射率。采用几种近似方法，其导致诸如光学深度积分和单一散射积分的量的分析解，以及需要计算的减少的积分数。所得到的算法能够实时渲染包括它们的阴影和散射效应的不均匀介质。该算法可以用于各种光源，包括点光源和环境光源。

22. 发明授权

US07602398B2 Decorating surfaces with textures 失效
标题翻译：用纹理装饰表面
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。

23. 发明申请

US20060290693A1 Large mesh deformation using the volumetric graph laplacian 有权
标题翻译：大型网格变形使用体积图拉普拉斯算子
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。

24. 发明授权

US07110000B2 Synthesis of progressively-variant textures and application to arbitrary surfaces 有权
标题翻译：逐渐变化的纹理和应用到任意表面的合成
公开(公告)号：US07110000B2
公开(公告)日：2006-09-19
申请号：US10698792
申请日：2003-10-31
申请人： Jingdan Zhang , Kun Zhou , Baining Guo , Heung-Yeung Shum
发明人： Jingdan Zhang , Kun Zhou , Baining Guo , Heung-Yeung Shum
IPC分类号： G06T15/30 , G06T17/00 , G09G5/00 , G06K9/36
CPC分类号： G06T11/001
摘要： Methods for synthesizing progressively-variant textures based on texton masks are provided. A first method creates a synthesized texture image guided by a sample texture, first texton mask corresponding to the sample texture and a second texton mask modified based on the first texton mask. A second method also creates a synthesized texture image guided by a first and second sample textures and corresponding first and second texton masks. A method for rendering a synthesized texture on an image of a three-dimensional object includes creating a synthesized texture on the object guided by a two-dimensional progressively-variant sample texture, a texton mask for the sample texture and a mesh of a plurality of vertices representing the object.
摘要翻译：提供了基于纹理掩码合成渐变变体纹理的方法。第一种方法创建由样本纹理引导的合成纹理图像，对应于样本纹理的第一纹理掩模和基于第一纹理掩模修改的第二纹理蒙版。第二种方法还创建由第一和第二样本纹理和对应的第一和第二纹理蒙版引导的合成纹理图像。用于在三维物体的图像上呈现合成纹理的方法包括在由二维渐变样本纹理引导的对象上创建合成纹理，用于样本纹理的纹理掩模和多个表示对象的顶点。

25. 发明授权

US08009168B2 Real-time rendering of light-scattering media 有权
标题翻译：实时渲染光散射介质
公开(公告)号：US08009168B2
公开(公告)日：2011-08-30
申请号：US11768894
申请日：2007-06-26
申请人： Kun Zhou , Zhong Ren , Stephen Ssu-te Lin , Baining Guo , Heung-Yeung Shum
发明人： Kun Zhou , Zhong Ren , Stephen Ssu-te Lin , Baining Guo , Heung-Yeung Shum
IPC分类号： G06T15/00
CPC分类号： G06T15/55
摘要： A real-time algorithm for rendering of an inhomogeneous scattering media such as smoke under dynamic low-frequency environment lighting is described. An input media animation is represented as a sequence of density fields, each of which is decompressed into a weighted sum of a set of radial basis functions (RBFs) and an optional residual field. Source radiances from single and optionally multiple scattering are directly computed at only the RBF centers and then approximated at other points in the volume using an RBF-based interpolation. Using the computed source radiances, a ray marching technique using slice-based integration of radiance along each viewing ray is performed to render the final image. During the ray marching process, the residual field may be compensated back into the radiance integral to generate images of higher detail.
摘要翻译：描述了在动态低频环境照明下渲染非均匀散射介质（如烟雾）的实时算法。输入媒体动画被表示为密度字段序列，每个密度字段被解压缩成一组径向基函数（RBF）和可选残余字段的加权和。仅从RBF中心直接计算来自单个和任选多个散射的源辐射，然后使用基于RBF的插值在体积中的其他点处近似。使用计算的源辐射，执行使用沿着每个观察射线的基于片段的辐射积分的射线行进技术来渲染最终图像。在射线行进过程中，残余场可以被补偿回到辐射积分中以产生更高细节的图像。

26. 发明授权

US07990377B2 Real-time rendering of light-scattering media 有权
标题翻译：实时渲染光散射介质
公开(公告)号：US07990377B2
公开(公告)日：2011-08-02
申请号：US11830743
申请日：2007-07-30
申请人： Kun Zhou , Zhong Ren , Stephen Ssu-te Lin , Baining Guo , Heung-Yeung Shum
发明人： Kun Zhou , Zhong Ren , Stephen Ssu-te Lin , Baining Guo , Heung-Yeung Shum
IPC分类号： G06T15/00
CPC分类号： G06T15/55
摘要： A real-time algorithm for rendering of an inhomogeneous scattering media such as smoke under dynamic low-frequency environment lighting is described. An input media animation is represented as a sequence of density fields, each of which is represented by an approximate model density field and a residual density field. The algorithm uses the approximate model density field to compute an approximate source radiance, and further computes an effective exitant radiance by compositing the approximate source radiance using a compositing methods such as ray marching. During the compositing process (e.g., ray marching), the residual field is compensated back into the radiance integral to generate images of higher detail.
摘要翻译：描述了在动态低频环境照明下渲染非均匀散射介质（如烟雾）的实时算法。输入媒体动画被表示为密度域序列，每个密度场由近似模型密度场和残余密度域表示。该算法使用近似模型密度场来计算近似辐射源，并且通过使用诸如射线行进之类的合成方法合成近似源辐射来进一步计算有效的出射辐射度。在合成过程（例如，射线行进）期间，残余场被补偿回到辐射积分中以产生更高细节的图像。

27. 发明授权

US07973798B2 Inverse texture synthesis 有权
标题翻译：反纹理合成
公开(公告)号：US07973798B2
公开(公告)日：2011-07-05
申请号：US12059041
申请日：2008-03-31
申请人： Li-Yi Wei , Kun Zhou , Jianwei Han , Baining Guo , Heung-Yeung Shum
发明人： Li-Yi Wei , Kun Zhou , Jianwei Han , Baining Guo , Heung-Yeung Shum
IPC分类号： G09G5/00
CPC分类号： G06T11/001
摘要： A “texture generator” uses an inverse texture synthesis solution that runs in the opposite direction to traditional forward synthesis techniques to construct 2D texture compactions for use by a graphics processing unit (GPU) of a computer system. These small 2D texture compactions generally summarize an original globally variant texture or image, and are used to reconstruct the original texture or image, or to re-synthesize new textures or images under user-supplied constraints. In various embodiments, the texture generator uses the texture compaction to provide real-time synthesis of globally variant textures on a GPU, where texture memory is generally too small for large textures. Further, the texture generator provides an optimization framework for inverse texture synthesis which ensures that each input region is properly encoded in the output compaction. In addition, the texture generator also computes orientation fields for anisotropic textures containing both low- and high-frequency regions.
摘要翻译： “纹理生成器”使用逆向纹理合成解决方案，其以与传统的前向合成技术相反的方向运行，以构建2D纹理压缩以供计算机系统的图形处理单元（GPU）使用。这些小的2D纹理压缩通常总结原始的全局变体纹理或图像，并用于重构原始纹理或图像，或者在用户提供的约束条件下重新合成新的纹理或图像。在各种实施例中，纹理生成器使用纹理压缩以在GPU上提供全局变体纹理的实时合成，其中纹理存储器通常对于大纹理来说太小。此外，纹理生成器提供用于逆纹理合成的优化框架，其确保每个输入区域在输出压缩中被适当地编码。此外，纹理生成器还计算包含低频和高频区域的各向异性纹理的取向场。

28. 发明授权

US07940269B2 Real-time rendering of light-scattering media 有权
标题翻译：实时渲染光散射介质
公开(公告)号：US07940269B2
公开(公告)日：2011-05-10
申请号：US11770974
申请日：2007-06-29
申请人： Kun Zhou , Qiming Hou , Minmin Gong , John Michael Snyder , Baining Guo , Heung-Yeung Shum
发明人： Kun Zhou , Qiming Hou , Minmin Gong , John Michael Snyder , Baining Guo , Heung-Yeung Shum
IPC分类号： G06T15/50 , G06T15/00
CPC分类号： G06T15/50
摘要： A real-time algorithm for rendering of an inhomogeneous scattering medium such as fog with a surface object immersed therein is described. An input media animation is represented as a sequence of density fields. The algorithm computes surface reflectance of the surface object in the inhomogeneous scattering medium. The algorithm may also compute airlight of the inhomogeneous scattering medium. Several approximations are taken which lead to analytical solutions of quantities such as optical depth integrations and single scattering integrations, and a reduced number of integrations that need to be calculated. The resultant algorithm is able to render inhomogeneous media including their shadowing and scattering effects in real time. The algorithm may be adopted for a variety of light sources including point lights and environmental lights.
摘要翻译：描述了用于渲染非均匀散射介质（例如，其中浸入表面物体的雾）的实时算法。输入媒体动画被表示为一系列密度字段。该算法计算非均匀散射介质中表面物体的表面反射率。该算法还可以计算不均匀散射介质的空气光。采用几种近似方法，其导致诸如光学深度积分和单一散射积分的量的分析解，以及需要计算的减少的积分数。所得到的算法能够实时渲染包括它们的阴影和散射效应的不均匀介质。该算法可以用于各种光源，包括点光源和环境光源。

29. 发明授权

US07868885B2 Direct manipulation of subdivision surfaces using a graphics processing unit 失效
标题翻译：使用图形处理单元直接操纵细分表面
公开(公告)号：US07868885B2
公开(公告)日：2011-01-11
申请号：US11767427
申请日：2007-06-22
申请人： Kun Zhou , Heung-Yeung Shum , Baining Guo , Xin Huang , Weiwei Xu
发明人： Kun Zhou , Heung-Yeung Shum , Baining Guo , Xin Huang , Weiwei Xu
IPC分类号： G06T15/00
CPC分类号： G06T17/20
摘要： A graphics system allows for manipulation of a detail mesh for a subdivision surface. To deform the subdivision surface, the graphics system generates a corresponding deformed control mesh by attempting to satisfy both position constraints of the manipulation and Laplacian constraints for the detail mesh. After the deformed control mesh is generated, the deformed detail mesh can be generated by applying a subdivision function to the deformed control mesh to generate a deformed smooth mesh and then applying detail information to the deformed smooth mesh.
摘要翻译：图形系统允许操纵细分表面的细节网格。为了使细分表面变形，图形系统通过尝试满足操作的位置约束和细节网格的拉普拉斯约束来生成相应的变形控制网格。在生成变形控制网格之后，可以通过对变形的控制网格应用细分功能来生成变形的细节网格，以生成变形的平滑网格，然后将细节信息应用于变形的平滑网格。

30. 发明授权

US07589720B2 Mesh editing with gradient field manipulation and user interactive tools for object merging 失效
标题翻译：使用渐变字段操作进行网格编辑和用于对象合并的用户交互式工具
公开(公告)号：US07589720B2
公开(公告)日：2009-09-15
申请号：US10911394
申请日：2004-08-04
申请人： Kun Zhou , Baining Guo , Heung-Yeung Shum
发明人： Kun Zhou , Baining Guo , Heung-Yeung Shum
IPC分类号： G06T17/20 , G06T15/00 , G06T17/00 , G09G5/00
CPC分类号： G06T17/205 , G06T17/20
摘要： User interactive methods of determining vertex correspondence between boundaries or curves on objects to be merged is provided. One method relates to projecting a boundary of one object onto a second object to determine a merging curve, along which the two objects will be joined. Another method includes projecting a first object onto a plane to form a planar curve. The planar curve is then mapped to a second object to form a merging curve. Still another method includes interactively selecting corresponding key vertices on different objects to form a merging curve. A system presented that can use one or more of the methods of determining correspondence between boundaries. A merged object can be generated from the merging curve using a mesh solver, such as a Poisson or non-Poisson mesh solver.
摘要翻译：提供了确定要合并的对象上的边界或曲线之间的顶点对应关系的用户交互方法。一种方法涉及将一个对象的边界投影到第二对象上以确定两个对象将被连接在一起的合并曲线。另一种方法包括将第一物体投射到平面上以形成平面曲线。然后将平面曲线映射到第二个对象以形成合并曲线。另一种方法包括在不同对象上交互地选择对应的关键顶点以形成合并曲线。提出的系统可以使用确定边界之间的对应关系的一种或多种方法。可以使用网格求解器（例如泊松或非泊松网格求解器）从合并曲线生成合并对象。

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