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1. 发明申请

US20090184960A1 System and Methods for Rendering Transparent Surfaces in High Depth Complexity Scenes Using Hybrid and Coherent Layer Peeling 有权
标题翻译：使用混合和相干层剥离在高深度复杂性场景中渲染透明表面的系统和方法
公开(公告)号：US20090184960A1
公开(公告)日：2009-07-23
申请号：US12177709
申请日：2008-07-22
申请人： Nathan A. Carr , Gavin S.P. Miller , Radomir Mech
发明人： Nathan A. Carr , Gavin S.P. Miller , Radomir Mech
IPC分类号： G06T15/40
CPC分类号： G06T15/503
摘要： 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.
摘要翻译：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。

2. 发明申请

US20090058871A1 Example-Based Procedural Synthesis of Element Arrangements 有权
标题翻译：基于示例的元素排列的程序合成
公开(公告)号：US20090058871A1
公开(公告)日：2009-03-05
申请号：US12039164
申请日：2008-02-28
申请人： Radomir Mech , Takashi Ijiri , Gavin S.P. Miller
发明人： Radomir Mech , Takashi Ijiri , Gavin S.P. Miller
IPC分类号： G09G5/00
CPC分类号： G06T11/001
摘要： 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.
摘要翻译：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。

3. 发明申请

US20130120355A1 Methods and Apparatus for Generating Curved Extrusions 有权
标题翻译：产生弯曲挤压的方法和装置
公开(公告)号：US20130120355A1
公开(公告)日：2013-05-16
申请号：US12790570
申请日：2010-05-28
申请人： Pushkar P. Joshi , Gavin S.P. Miller , Peter F. Falco, JR.
发明人： Pushkar P. Joshi , Gavin S.P. Miller , Peter F. Falco, JR.
IPC分类号： G06T15/00
CPC分类号： G06T19/20 , G06T17/10 , G06T2200/24 , G06T2219/2012 , G06T2219/2016 , G06T2219/2021
摘要： Methods and apparatus for generating curved extrusions. A user interface may be provided via which the value of one or more extrusion parameters and/or a reference point may be changed. The extrusion parameters may include a depth parameter that controls the amount of extrusion, an X angle parameter that controls the angle of bend in the X direction, a Y angle parameter that controls the angle of bend in the Y direction, a scale parameter that controls the scale factor, and a twist parameter that controls the angle of extrusion twist. A weight function for changing one or more of the extrusion parameters non-uniformly along the sweep path may also be provided. An extrusion may be generated from an initial 2D object according to the set of extrusion parameters and the reference point.
摘要翻译：产生弯曲挤压的方法和装置。可以提供用户界面，通过其可以改变一个或多个挤出参数和/或参考点的值。挤出参数可以包括控制挤出量的深度参数，控制X方向的弯曲角度的X角度参数，控制Y方向的弯曲角的Y角度参数，控制比例因子和控制挤出角度的扭曲参数。还可以提供用于沿扫掠路径不均匀地改变一个或多个挤出参数的重量函数。可以根据挤出参数和参考点的集合从初始2D对象产生挤出。

4. 发明申请

US20130120385A1 Methods and Apparatus for Diffuse Indirect Illumination Computation using Progressive Interleaved Irradiance Sampling 审中-公开
标题翻译：使用逐行交错辐射采样的漫反射间接照明计算方法与装置
公开(公告)号：US20130120385A1
公开(公告)日：2013-05-16
申请号：US12854785
申请日：2010-08-11
申请人： Aravind Krishnaswamy , Gavin S.P. Miller , Lei Yang
发明人： Aravind Krishnaswamy , Gavin S.P. Miller , Lei Yang
IPC分类号： G06T15/50
CPC分类号： G06T15/50
摘要： Methods and apparatus for diffuse indirect illumination computation using progressive interleaved irradiance sampling. Embodiments may implement a method that amortizes the cost of computing the irradiance integral for diffuse indirect illumination both temporally and spatially in screen space. For each pixel, only one secondary ray is fired. By carefully arranging different secondary ray directions for different pixels according to a sampling sequence, embodiments may filter the noisy estimate so that each pixel receives a relatively uniform coverage of the integrated hemisphere. Some embodiments may use a bilateral filter so that the geometric discontinuities are respected. The sequence may continue to a higher-level of stratification in each frame. This ensures that the rendering is converging to a noise-free result.
摘要翻译：使用渐进交错辐射采样的漫反射间接照明计算方法和装置。实施例可以实现一种方法，其在屏幕空间中在时间和空间上分摊计算漫射间接照明的辐照度积分的成本。对于每个像素，仅发射一个二次光线。通过根据采样序列仔细地布置不同像素的不同二次射线方向，实施例可以对噪声估计进行滤波，使得每个像素接收到集成半球的相对均匀的覆盖。一些实施例可以使用双边滤波器，使得几何不连续性得到遵守。该序列可以在每个帧中继续进行更高级别的分层。这确保渲染正在收敛到无噪音的结果。

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