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    • 4. 发明申请
    • Real-Time Rendering of Light-Scattering Media
    • 光散射介质的实时渲染
    • US20090006051A1
    • 2009-01-01
    • US11770942
    • 2007-06-29
    • Kun ZhouQiming HouMinmin GongJohn Michael SnyderBaining GuoHeung-Yeung Shum
    • Kun ZhouQiming HouMinmin GongJohn Michael SnyderBaining GuoHeung-Yeung Shum
    • G06G7/48
    • G06T15/506
    • 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.
    • 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。
    • 5. 发明授权
    • Octree construction on graphics processing units
    • 八度构建图形处理单元
    • US08169434B2
    • 2012-05-01
    • US12240973
    • 2008-09-29
    • Kun ZhouMinmin GongBaining Guo
    • Kun ZhouMinmin GongBaining Guo
    • G06T15/00G06T15/04G06T15/08
    • G06F17/30961
    • An octree GPU construction system and method for constructing a complete octree data structure on a graphics processing unit (GPU). Embodiments of the octree GPU construction system and method first defines a complete octree data structure as forming a complete partition of the 3-D space and including a vertex, edge, face, and node arrays, and neighborhood information. Embodiments of the octree GPU construction system and method input a point cloud and construct a node array. Next, neighboring nodes are computed for each of the nodes in the node arrays by using at least two pre-computed look-up tables (such as a parent look-up table and a child look-up table). Embodiments of the octree GPU construction system and method then use the neighboring nodes and neighborhood information to compute a vertex array, edge array, and face array are computed by determining owner information and self-ownership information based on the neighboring nodes.
    • 用于在图形处理单元(GPU)上构造完整八叉树数据结构的八叉树GPU构造系统和方法。 八叉树GPU构造系统和方法的实施例首先将完整的八叉树数据结构定义为形成3-D空间的完整分区并且包括顶点,边缘,面和节点阵列以及邻域信息。 八叉树GPU构造系统和方法的实施例输入点云并构造节点阵列。 接下来,通过使用至少两个预先计算的查询表(诸如父查询表和子查找表)来计算节点阵列中的每个节点的相邻节点。 八叉树GPU构造系统和方法的实施例然后通过基于相邻节点确定所有者信息和自身所有权信息来计算相邻节点和邻域信息来计算顶点阵列,边缘阵列和面部阵列。
    • 6. 发明授权
    • Real-time rendering of light-scattering media
    • 实时渲染光散射介质
    • US07940269B2
    • 2011-05-10
    • US11770974
    • 2007-06-29
    • Kun ZhouQiming HouMinmin GongJohn Michael SnyderBaining GuoHeung-Yeung Shum
    • Kun ZhouQiming HouMinmin GongJohn Michael SnyderBaining GuoHeung-Yeung Shum
    • G06T15/50G06T15/00
    • G06T15/50
    • 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.
    • 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。
    • 7. 发明申请
    • OCTREE CONSTRUCTION ON GRAPHICS PROCESSING UNITS
    • 图形处理单元的构造
    • US20100082703A1
    • 2010-04-01
    • US12240973
    • 2008-09-29
    • Kun ZhouMinmin GongBaining Guo
    • Kun ZhouMinmin GongBaining Guo
    • G06F17/30G06F7/06
    • G06F17/30961
    • An octree GPU construction system and method for constructing a complete octree data structure on a graphics processing unit (GPU). Embodiments of the octree GPU construction system and method first defines a complete octree data structure as forming a complete partition of the 3-D space and including a vertex, edge, face, and node arrays, and neighborhood information. Embodiments of the octree GPU construction system and method input a point cloud and construct a node array. Next, neighboring nodes are computed for each of the nodes in the node arrays by using at least two pre-computed look-up tables (such as a parent look-up table and a child look-up table). Embodiments of the octree GPU construction system and method then use the neighboring nodes and neighborhood information to compute a vertex array, edge array, and face array are computed by determining owner information and self-ownership information based on the neighboring nodes.
    • 用于在图形处理单元(GPU)上构造完整八叉树数据结构的八叉树GPU构造系统和方法。 八叉树GPU构造系统和方法的实施例首先将完整的八叉树数据结构定义为形成3-D空间的完整分区并且包括顶点,边缘,面和节点阵列以及邻域信息。 八叉树GPU构造系统和方法的实施例输入点云并构造节点阵列。 接下来,通过使用至少两个预先计算的查询表(诸如父查询表和子查找表)来计算节点阵列中的每个节点的相邻节点。 八叉树GPU构造系统和方法的实施例然后通过基于相邻节点确定所有者信息和自身所有权信息来计算相邻节点和邻域信息来计算顶点阵列,边缘阵列和面部阵列。
    • 8. 发明申请
    • Real-Time Rendering of Light-Scattering Media
    • 光散射介质的实时渲染
    • US20090006052A1
    • 2009-01-01
    • US11770974
    • 2007-06-29
    • Kun ZhouQiming HouMinmin GongJohn Michael SnyderBaining GuoHeung-Yeung Shum
    • Kun ZhouQiming HouMinmin GongJohn Michael SnyderBaining GuoHeung-Yeung Shum
    • G06G7/48
    • G06T15/50
    • 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 the real time. The algorithm may be adopted for a variety of light sources including point lights and environmental lights.
    • 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果的非均匀介质。 该算法可以用于各种光源,包括点光源和环境光源。
    • 9. 发明授权
    • Parallel surface reconstruction
    • 平行面重构
    • US08610706B2
    • 2013-12-17
    • US12245707
    • 2008-10-04
    • Kun ZhouXin HuangMinmin GongBaining Guo
    • Kun ZhouXin HuangMinmin GongBaining Guo
    • G06T15/00
    • G06T17/20G06T17/005
    • Described is a technology in which point cloud surface reconstruction is performed via parallel processing on a graphics processing unit, achieving real-time reconstruction rates. An octree is built for a given set of oriented points, with each node containing a set of points enclosed by the node. The data structure is built on the GPU, in parallel, using level-order traversals to process nodes at a same tree level. The surface is reconstructed based on data configured and located via the traversals. To produce the surface, an implicit function over the volume spanned by the octree nodes is computed using the GPU, e.g., based on a Poisson surface reconstruction method. A sparse linear system is built and a multi-grid solver is employed to solve the system. An adaptive marching cubes procedure is performed on the GPU to extract an isosurface of the implicit function as a triangular mesh.
    • 描述了通过图形处理单元上的并行处理进行点云表面重建的技术,实现了实时重建率。 为给定的一组定向点构建八叉树,每个节点包含由节点包围的一组点。 数据结构并行构建在GPU上,使用级别遍历来处理同一树级的节点。 基于通过遍历配置和定位的数据来重构表面。 为了产生表面,例如基于泊松表面重建方法,使用GPU计算由八叉树节点跨越的卷的隐式函数。 构建了一个稀疏线性系统,并采用多网格求解器来解决系统问题。 在GPU上执行自适应行进立方体程序以将隐含函数的等值面提取为三角形网格。
    • 10. 发明授权
    • Real-time rendering of light-scattering media
    • 实时渲染光散射介质
    • US07940268B2
    • 2011-05-10
    • US11770942
    • 2007-06-29
    • Kun ZhouQiming HouMinmin GongJohn Michael SnyderBaining GuoHeung-Yeung Shum
    • Kun ZhouQiming HouMinmin GongJohn Michael SnyderBaining GuoHeung-Yeung Shum
    • G06T15/50G06T15/00
    • G06T15/506
    • 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.
    • 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。