公开(公告)号：US07557807B2

公开(公告)日：2009-07-07

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。

公开(公告)号：US07538766B2

公开(公告)日：2009-05-26

申请号：US11147921

申请日：2005-06-08

申请人： Kun Zhou ,  Yaohua Hu ,  Stephen S. Lin ,  Baining Guo ,  Heung-Yeung Shum

发明人： Kun Zhou ,  Yaohua Hu ,  Stephen S. Lin ,  Baining Guo ,  Heung-Yeung Shum

IPC分类号： G06T15/00

CPC分类号： G06T15/60

摘要： Pre-computed shadow fields are described. In one aspect, shadow fields for multiple entities are pre-computed. The shadow fields are pre-computed independent of scene configuration. The multiple entities include at least one occluding object and at least one light source. A pre-computed shadow field for a light source indicates radiance from the light source. A pre-computed shadow field for an occluding object indicates occlusion of radiance from the at least one light source.

摘要翻译： 描述预先计算的阴影场。 在一个方面，多个实体的影子字段被预先计算。 阴影场是独立于场景配置预先计算的。 多个实体包括至少一个闭塞对象和至少一个光源。 用于光源的预计算阴影场指示来自光源的辐射。 用于闭塞物体的预计算阴影场表示遮挡来自至少一个光源的辐射。

公开(公告)号：US20090006189A1

公开(公告)日：2009-01-01

申请号：US11769518

申请日：2007-06-27

申请人： Lei Zhang ,  Wei-Ying Ma ,  Ruochi Zhang ,  Zhiwei Li ,  Hsiao-Wuen Hon ,  Heung-Yeung Shum

发明人： Lei Zhang ,  Wei-Ying Ma ,  Ruochi Zhang ,  Zhiwei Li ,  Hsiao-Wuen Hon ,  Heung-Yeung Shum

IPC分类号： G06Q30/00

CPC分类号： G06Q30/02 ,  G06Q30/0247 ,  G06Q30/0277

摘要： An image advertisement system of a computing device displays as part of a display page an advertisement-infused thumbnail of an image prior to displaying the image. The image advertisement system initially receives a display page with an indication of an image to be displayed as part of the display page. The image advertisement system generates an advertisement-infused thumbnail of the image by combining advertisement content with a thumbnail of the image. The image advertisement system then displays the display page with the advertisement-infused thumbnail of the image in place of the image. The image advertisement system then replaces the displayed advertisement-infused thumbnail with the image.

摘要翻译： 计算设备的图像广告系统在显示图像之前，将图像的广告注入的缩略图显示为显示页面的一部分。 图像广告系统最初接收具有作为显示页面的一部分显示的图像的指示的显示页面。 图像广告系统通过将广告内容与图像的缩略图组合来生成图像的广告注入的缩略图。 图像广告系统然后显示具有图像的广告输入的缩略图的显示页面来代替图像。 然后，图像广告系统用图像代替显示的广告输入的缩略图。

公开(公告)号：US20090006051A1

公开(公告)日：2009-01-01

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： G06G7/48

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。

公开(公告)号：US20090006046A1

公开(公告)日：2009-01-01

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： G06F17/10

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。

公开(公告)号：US20090006044A1

公开(公告)日：2009-01-01

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： G06F17/10

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。

公开(公告)号：US20090002363A1

公开(公告)日：2009-01-01

申请号：US11771694

申请日：2007-06-29

申请人： Tai-Pang Wu ,  Chi-Keung Tang ,  Michael S. Brown ,  Heung-Yeung Shum

发明人： Tai-Pang Wu ,  Chi-Keung Tang ,  Michael S. Brown ,  Heung-Yeung Shum

IPC分类号： G06T15/00

CPC分类号： G06T19/00 ,  G06T15/04 ,  G06T17/10

摘要： Processes and techniques for imparting three-dimensional visual characteristics to images in a two-dimensional space are described. In one implementation, a graphical image is received in a two-dimensional space (e.g., a user interface on a computing device). A shape palette is presented to a user, the shape palette comprising a visual representation of three-dimensional visual information. Based on user markup of the shape palette, three-dimensional visual information is extracted from the shape palette and correlated with the graphical image. The three-dimensional visual information is processed to render the graphical image with three-dimensional visual characteristics.

摘要翻译： 对二维空间中的图像赋予立体视觉特征的处理和技术进行说明。 在一个实现中，在二维空间（例如，计算设备上的用户界面）上接收图形图像。 向用户呈现形状调色板，该形状调色板包括三维视觉信息的视觉表示。 基于形状调色板的用户标记，从形状调色板提取三维视觉信息并与图形图像相关联。 处理三维视觉信息以呈现具有三维视觉特征的图形图像。

公开(公告)号：US20080316202A1

公开(公告)日：2008-12-25

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。

公开(公告)号：US20080304740A1

公开(公告)日：2008-12-11

申请号：US11759192

申请日：2007-06-06

申请人： Jian Sun ,  Tie Liu ,  Xiaoou Tang ,  Heung-Yeung Shum

发明人： Jian Sun ,  Tie Liu ,  Xiaoou Tang ,  Heung-Yeung Shum

IPC分类号： G06K9/00

CPC分类号： G06K9/3233 ,  G06K9/4638

摘要： Methods for detecting a salient object in an input image are described. For this, the salient object in an image may be defined using a set of local, regional, and global features including multi-scale contrast, center-surround histogram, and color spatial distribution. These features are optimally combined through conditional random field learning. The learned conditional random field is then used to locate the salient object in the image. The methods can also use image segmentation, where the salient object is separated from the image background.

摘要翻译： 描述用于检测输入图像中的突出物体的方法。 为此，可以使用一组局部，区域和全局特征来定义图像中的显着对象，包括多尺度对比度，中心环绕直方图和颜色空间分布。 这些特征通过条件随机场学习进行最佳组合。 然后使用学习的条件随机字段来定位图像中的显着对象。 该方法还可以使用图像分割，其中显着对象与图像背景分离。

公开(公告)号：US07463769B2

公开(公告)日：2008-12-09

申请号：US11156988

申请日：2005-06-20

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不均匀直方图映射到校准强度的均匀分布的逆响应函数。