公开(公告)号：US07609264B2

公开(公告)日：2009-10-27

申请号：US11277935

申请日：2006-03-29

Applicant: Xin Tong ,  Yanyun Chen ,  Baining Guo ,  Heung-Yeung Shum ,  Stephen Lin ,  Ying Song

Inventor： Xin Tong ,  Yanyun Chen ,  Baining Guo ,  Heung-Yeung Shum ,  Stephen Lin ,  Ying Song

IPC: G06T15/00

CPC classification number: G06T15/55

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20080240540A1

公开(公告)日：2008-10-02

申请号：US11694840

申请日：2007-03-30

Applicant: Jiaping Wang ,  Xin Tong ,  Stephen Lin ,  Baining Guo ,  Heung-Yeung Shum

Inventor： Jiaping Wang ,  Xin Tong ,  Stephen Lin ,  Baining Guo ,  Heung-Yeung Shum

IPC: G06K9/00

CPC classification number: G06T19/00 ,  G06T13/00 ,  G06T2210/64

Abstract: A method for modeling a time-variant appearance of a material is described. A sample analysis of a material sample is performed, wherein the sample analysis orders surface points of the material sample with respect to weathering from data captured at a single instant in time. An appearance synthesis using the sample analysis is performed, wherein the appearance synthesis generates a time-variant sequence of frames for weathering an object.

Abstract translation: 描述了用于对材料的时变外观进行建模的方法。 进行材料样品的样品分析，其中样品分析根据在单个时刻捕获的数据对材料样品的表面点进行排序。 执行使用样本分析的外观合成，其中外观合成生成用于风化对象的帧的时变序列。

公开(公告)号：US20060008141A1

公开(公告)日：2006-01-12

申请号：US11156988

申请日：2005-06-20

Applicant: Stephen Lin ,  Baining Guo ,  Heung-Yeung Shum ,  Jinwei Gu

Inventor： Stephen Lin ,  Baining Guo ,  Heung-Yeung Shum ,  Jinwei Gu

IPC: G06K9/00

CPC classification number: H04N1/603 ,  G06T7/80 ,  G06T7/90

Abstract: 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.

Abstract translation: 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不均匀直方图映射到校准强度的均匀分布的逆响应函数。

公开(公告)号：US20050280646A1

公开(公告)日：2005-12-22

申请号：US10965603

申请日：2004-10-13

Applicant: Xi Wang ,  Xin Tong ,  Stephen Lin ,  Baining Guo ,  Heung-Yeung Shum

Inventor： Xi Wang ,  Xin Tong ,  Stephen Lin ,  Baining Guo ,  Heung-Yeung Shum

IPC: G06T15/20 ,  G06T15/50 ,  G06T15/60 ,  G06T17/00 ,  G09G5/00

CPC classification number: G06T15/04

Abstract: 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.

Abstract translation: “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。

公开(公告)号：USD394277S

公开(公告)日：1998-05-12

申请号：US68994

申请日：1997-04-25

Applicant: Stephen Lin

Designer： Stephen Lin

公开(公告)号：US07663623B2

公开(公告)日：2010-02-16

申请号：US11612394

申请日：2006-12-18

Applicant: Kun Zhou ,  Jiaping Wang ,  Stephen Lin ,  Baining Guo

Inventor： Kun Zhou ,  Jiaping Wang ,  Stephen Lin ,  Baining Guo

IPC: G06T15/50 ,  G06T15/00

CPC classification number: G06T15/55

Abstract: A method, device and system is provided for providing global illumination of a scene. For example, global illumination may be provided in a rendered 3-dimensional image that may contain objects and/or light sources. Radiance functions or visibility functions may further be represented by scaling of spherical harmonics functions in the spherical harmonics domain. For example, scaling of spherical harmonics coefficients corresponding to a spherical function may be performed based on a spherical harmonics scaling transformation matrix based on an angular scaling function.

Abstract translation: 提供了一种用于提供场景的全局照明的方法，装置和系统。 例如，可以在可以包含对象和/或光源的渲染的三维图像中提供全局照明。 亮度函数或可见度函数可以进一步通过球面谐波域中的球谐函数的缩放来表示。 例如，可以基于基于角度缩放函数的球面谐波缩放变换矩阵来执行对应于球面函数的球谐函数的缩放。

公开(公告)号：US07310101B2

公开(公告)日：2007-12-18

申请号：US10990142

申请日：2004-11-15

Applicant: Xi Wang ,  Xin Tong ,  Stephen Lin ,  Baining Guo ,  Heung-Yeung Shum

Inventor： Xi Wang ,  Xin Tong ,  Stephen Lin ,  Baining Guo ,  Heung-Yeung Shum

IPC: G09G5/00 ,  G06T15/20 ,  G06T15/60 ,  G06T17/00

CPC classification number: G06T15/04

Abstract: 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.

Abstract translation: “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。

公开(公告)号：US07286135B2

公开(公告)日：2007-10-23

申请号：US10990244

申请日：2004-11-15

Applicant: Xi Wang ,  Xin Tong ,  Stephen Lin ,  Baining Guo ,  Heung-Yeung Shum

Inventor： Xi Wang ,  Xin Tong ,  Stephen Lin ,  Baining Guo ,  Heung-Yeung Shum

IPC: G09G5/00 ,  G06T17/00 ,  G06T15/60 ,  G06T15/50

CPC classification number: G06T15/04

Abstract: 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.

Abstract translation: “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。

公开(公告)号：US20060290719A1

公开(公告)日：2006-12-28

申请号：US11166559

申请日：2005-06-24

Applicant: Xin Tong ,  Jiaping Wang ,  Stephen Lin ,  Baining Guo ,  Heung-Yeung Shum

Inventor： Xin Tong ,  Jiaping Wang ,  Stephen Lin ,  Baining Guo ,  Heung-Yeung Shum

IPC: G09G5/00 ,  G09G5/02

CPC classification number: G06T11/001 ,  G01N21/4795 ,  G06T15/506

Abstract: 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.

Abstract translation: 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：US20050280647A1

公开(公告)日：2005-12-22

申请号：US10990142

申请日：2004-11-15

Applicant: Xi Wang ,  Xin Tong ,  Stephen Lin ,  Baining Guo ,  Heung-Yeung Shum

Inventor： Xi Wang ,  Xin Tong ,  Stephen Lin ,  Baining Guo ,  Heung-Yeung Shum

IPC: G06T15/20 ,  G06T15/50 ,  G06T15/60 ,  G06T17/00 ,  G09G5/00

CPC classification number: G06T15/04

Abstract: 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.

Abstract translation: “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。