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71. 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。

72. 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。

73. 发明申请

US20050078124A1 Geometry-driven image synthesis rendering 有权
标题翻译：几何驱动的图像合成渲染
公开(公告)号：US20050078124A1
公开(公告)日：2005-04-14
申请号：US10684773
申请日：2003-10-14
申请人： Zicheng Liu , Baining Guo , Heung-Yeung Shum , Qingshan Zhang
发明人： Zicheng Liu , Baining Guo , Heung-Yeung Shum , Qingshan Zhang
IPC分类号： G06T15/70 , G09G5/00
CPC分类号： G06T15/00 , G06T13/40
摘要： A method and system uses geometry-driven feature point analysis to synthesize images including for example facial expressions. Given the feature point positions (geometry) of an expression, the method automatically synthesizes the corresponding expression image, which has photorealistic and natural looking expression details.
摘要翻译：一种方法和系统使用几何驱动的特征点分析来合成包括例如面部表情的图像。给定表达式的特征点位置（几何），该方法自动合成相应的表达图像，其具有逼真的和自然的表达细节。

74. 发明申请

US20050012746A1 Modeling and rendering of realistic feathers 失效
标题翻译：真实羽毛的建模和渲染
公开(公告)号：US20050012746A1
公开(公告)日：2005-01-20
申请号：US10623425
申请日：2003-07-18
申请人： Yanyun Chen , Baining Guo , Ying-Qing Xu , Heung-Yeung Shum
发明人： Yanyun Chen , Baining Guo , Ying-Qing Xu , Heung-Yeung Shum
IPC分类号： G06T11/20 , G06T15/10 , G06T17/20
CPC分类号： G06T17/20 , G06T15/10
摘要： The present invention provides a systematic method for rendering feathers. In one aspect, a segment of a rachis having a first barb and second barb is generated. The first barb is generated based on a first barb length and the second barb is generated based on a second barb length.
摘要翻译：本发明提供了一种用于渲染羽毛的系统方法。在一个方面，产生具有第一倒钩和第二倒钩的轴的段。基于第一倒钩长度产生第一倒钩，并且基于第二倒钩长度产生第二倒钩。

75. 发明授权

US06448973B1 Virtual texture 有权
标题翻译：虚拟纹理
公开(公告)号：US06448973B1
公开(公告)日：2002-09-10
申请号：US09578574
申请日：2000-05-25
申请人： Baining Guo , Ying-Qing Xu , Heung-Yeung Shum
发明人： Baining Guo , Ying-Qing Xu , Heung-Yeung Shum
IPC分类号： G06T1140
CPC分类号： G06T15/04
摘要： A structure that can be used to efficiently represent a virtual texture is disclosed. In one embodiment, a machine-readable medium has such a structure stored thereon, and includes a predetermined sample texture, and a predetermined global structure upon which the predetermined sample texture is to be overlaid in a predetermined manner. For example, a specific global structure is disclosed that includes a tiling encoding that describes a structure of a tiling, and a random block sequence that describes a predetermined number of random blocks within the sample texture that are to be pasted over the tiling to actualize the virtual texture. In such an instance, the sequence also describes locations where the blocks are to be pasted over the tiling. Also disclosed is that the structure can in some embodiments be utilized in texturing, such as procedural texturing.
摘要翻译：公开了可用于有效地表现虚拟纹理的结构。在一个实施例中，机器可读介质具有存储在其上的这种结构，并且包括预定样本纹理以及以预定方式覆盖预定样本纹理的预定全局结构。例如，公开了一种特定的全局结构，其包括描述平铺结构的平铺编码，以及随机块序列，其描述样本纹理中预定数量的待贴在平铺上的随机块，以实现虚拟纹理。在这种情况下，序列还描述了要在块上粘贴块的位置。还公开的是，在一些实施例中，该结构可用于纹理化，例如程序纹理化。

76. 发明授权

US07986830B2 Radiometric calibration from a single image 有权
标题翻译：单个图像的辐射校准
公开(公告)号：US07986830B2
公开(公告)日：2011-07-26
申请号：US12327680
申请日：2008-12-03
申请人： Stephen S. Lin , Baining Guo , Heung-Yeung Shum , Jinwei Gu
发明人： Stephen S. Lin , Baining Guo , Heung-Yeung Shum , Jinwei Gu
IPC分类号： G06K9/00
CPC分类号： H04N1/603 , G06T7/80 , G06T7/90
摘要： Radiometric calibration of an image capture device (e.g., a digital camera) using a single image is described. The single image may be a color image or a grayscale image. The calibration identifies and analyzes edge pixels of the image that correspond to an edge between two colors or grayscale levels of a scene. Intensity distributions of intensities measured from the single image are then analyzed. An inverse response function for the image capture device is determined based on the intensity distributions. For a color image, the radiometric calibration involves calculating an inverse response function that maps measured blended colors of edge pixels and the associated measured component colors into linear distributions. For a grayscale image, the radiometric calibration involves deriving an inverse response function that maps non-uniform histograms of measured intensities into uniform distributions of calibrated intensities.
摘要翻译：描述使用单个图像的图像捕获装置（例如，数码相机）的放射线校准。单个图像可以是彩色图像或灰度图像。校准识别和分析与场景的两种颜色或灰度级之间的边缘对应的图像的边缘像素。然后分析从单个图像测量的强度的强度分布。基于强度分布确定图像捕获装置的反应响应函数。对于彩色图像，辐射校准包括计算反向响应函数，其将边缘像素的测量混合颜色和相关联的测量分量颜色映射为线性分布。对于灰度图像，辐射校准涉及导出将测得的强度的非均匀直方图映射到校准强度的均匀分布的反向响应函数。

77. 发明授权

US07609264B2 Shell radiance texture function 有权
标题翻译：外壳辐射纹理功能
公开(公告)号：US07609264B2
公开(公告)日：2009-10-27
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： G06T15/00
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。

78. 发明授权

US07589723B2 Real-time rendering of partially translucent objects 有权
标题翻译：实时渲染部分半透明物体
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。

79. 发明授权

US07545375B2 View-dependent displacement mapping 有权
标题翻译：视图相关的位移映射
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。

80. 发明授权

US07537523B2 Dynamic player groups for interest management in multi-character virtual environments 有权
标题翻译：动态播放器组，用于多字符虚拟环境中的兴趣管理
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。

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