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    • 1. 发明授权
    • System and methods for rendering transparent surfaces in high depth complexity scenes using hybrid and coherent layer peeling
    • 使用混合和相干层剥离在高深度复杂场景中渲染透明表面的系统和方法
    • US08217934B2
    • 2012-07-10
    • US12177709
    • 2008-07-22
    • Nathan A. CarrGavin S. P. MillerRadomir Mech
    • Nathan A. CarrGavin S. P. MillerRadomir Mech
    • G06T15/40
    • G06T15/503
    • Systems, methods, and computer-readable storage media for rendering three-dimensional scenes including transparent surfaces are described, including two techniques for efficient rendering of transparent surfaces that exploit partial ordering in the scene geometry. The first (hybrid layer peeling) may combine unordered meshes with ordered meshes in an efficient way, and may be well suited for rendering scenes such as volumes with embedded transparent meshes. The second (coherent layer peeling) may efficiently detect and render correctly sorted fragment sequences for a given pixel in one iteration, allowing for a smaller number of passes than traditional depth peeling. Pre-sorting and/or periodic sorting of some or all of the surfaces in a scene may be performed, but perfect sorting may not be required. The methods may be implemented in hardware, software, or a combination thereof, such as by program instructions executable on one or more CPUs and/or GPUs.
    • 描述了用于渲染包括透明表面的三维场景的系统,方法和计算机可读存储介质,包括用于在场景几何中利用部分排序的透明表面的有效渲染的两种技术。 第一(混合层剥离)可以以有效的方式组合无序网格与有序网格,并且可以非常适合于渲染诸如具有嵌入的透明网格的体积的场景。 第二(相干层剥离)可以在一次迭代中有效地检测并呈现给定像素的正确分选的片段序列,从而允许比传统深度剥离更少的通行数。 可以执行场景中的一些或全部表面的预排序和/或定期排序,但是不需要完美的分类。 这些方法可以以硬件,软件或其组合来实现,例如通过可在一个或多个CPU和/或GPU上执行的程序指令来实现。
    • 5. 发明授权
    • Methods and apparatus for specifying and interpolating hierarchical procedural models
    • 用于指定和内插分级程序模型的方法和装置
    • US09292941B2
    • 2016-03-22
    • US12857382
    • 2010-08-16
    • Radomir MechJerry O. Talton, III
    • Radomir MechJerry O. Talton, III
    • G06T11/00
    • G06T11/001
    • Methods and apparatus for procedural modeling are described for generating procedural models and exploring procedural model space. Common procedural components (models, modules, and methods) and a hierarchical framework are described that may be used to construct hierarchical procedural models. A model may comprise a hierarchy of one or more modules. Each module includes a sequence of methods and an optional geometry for display. A method may be controlled by one or more parameters. The values of the parameters may be specified via curves. A module description may be condensed into a single array of values for parameters of the module. Thus, a model or module may be specified by filling in values for arrays of parameters for the sequence of methods. An interpolation technique for interpolating between models is described in which models are matched according to a cost function so that ancestry is preserved.
    • 描述了用于生成程序模型和探索程序模型空间的程序建模的方法和装置。 描述了可用于构建层次化程序模型的常见过程组件(模型,模块和方法)和层次框架。 模型可以包括一个或多个模块的层次结构。 每个模块包括一系列方法和可选几何显示。 方法可以由一个或多个参数控制。 可以通过曲线指定参数的值。 模块描述可以被简化为模块的参数的单个数组值。 因此,可以通过填充方法序列的参数数组来指定模型或模块。 描述了用于在模型之间插值的插值技术,其中根据成本函数匹配模型,从而保留祖先。
    • 7. 发明授权
    • Example-based procedural synthesis of element arrangements
    • 元素排列的基于示例的程序综合
    • US08457405B2
    • 2013-06-04
    • US12039164
    • 2008-02-28
    • Radomir MechTakashi IjiriGavin S. P. Miller
    • Radomir MechTakashi IjiriGavin S. P. Miller
    • G06K9/00
    • G06T11/001
    • Method and apparatus for synthesizing element arrangements from an example. Embodiments may synthesize element arrangement patterns from an example arrangement. Embodiments may combine a texture synthesis technique based on local neighborhood comparison of an example and a target with procedural modeling based on local growth. Given an example, connectivity of elements may be constructed to get neighborhoods information of each element. A synthesis process may start with a single seed and expand the synthesized pattern by placing new elements at seed locations one by one. A reference element may be selected from the example that has neighborhood features that are most similar to neighborhood features of the target seed in the synthesized pattern. A non-rotation mode, a rotation mode, and a flow field mode may be provided. A painting tool, a flow field tool, and a boundary tool may be provided.
    • 从一个例子中合成元件布置的方法和装置。 实施例可以从示例性布置合成元件排列图案。 实施例可以将基于实例和目标的本地邻域比较的纹理合成技术与基于本地增长的过程建模相结合。 给出一个例子,可以构造元素的连接以获得每个元素的邻域信息。 合成过程可以以单个种子开始,并通过在种子位置逐个放置新元素来扩展合成图案。 可以从具有与合成图案中的目标种子的邻域特征最相似的邻域特征的示例中选择参考元素。 可以提供非旋转模式,旋转模式和流场模式。 可以提供绘画工具,流场工具和边界工具。
    • 8. 发明申请
    • Methods and Apparatus for Printability of Three-Dimensional Objects
    • 三维物体印刷性的方法与装置
    • US20130124151A1
    • 2013-05-16
    • US13408890
    • 2012-02-29
    • Radomir MechNathan A. CarrOndrej Stava
    • Radomir MechNathan A. CarrOndrej Stava
    • G06F17/50
    • G06F17/50B29C64/112B29C64/386B33Y40/00B33Y50/02
    • Methods and apparatus for improving printability of a three-dimensional model are disclosed. For a computer-based three-dimensional model to be generated by a three-dimensional printing system, a three-dimensional printability analysis of the model is performed. The three-dimensional printability analysis applies one or more test cases representing forces that may be applied to the model. The three-dimensional printability analysis generates one or more points at which stresses associated with the test case exceed the structural tolerances of a material to be used by the three-dimensional printing system for a fabrication of the model. For each point of the one or more points, one or more corrections to the model designed to decrease the stresses associated with a respective test case are calculated. For each test case, the corrections are evaluated. The evaluating includes selecting a preferred correction based on one or more criteria.
    • 公开了提高三维模型的可印刷性的方法和装置。 对于由三维打印系统生成的基于计算机的三维模型,执行该模型的三维可打印性分析。 三维可印刷性分析应用一个或多个表示可应用于模型的力的测试用例。 三维可印刷性分析产生一个或多个点,其中与测试案例相关联的应力超过三维打印系统用于制造模型的材料的结构公差。 对于一个或多个点的每个点,计算设计成减小与各个测试用例相关联的应力的模型的一个或多个校正。 对于每个测试用例,对校正进行评估。 评估包括基于一个或多个标准选择优选的校正。