专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20190236832A1 Compressed Ray Direction Data in a Ray Tracing System 审中-公开
公开(公告)号：US20190236832A1
公开(公告)日：2019-08-01
申请号：US16375630
申请日：2019-04-04
申请人： Imagination Technologies Limited
发明人： Luke T. Peterson , Simon Fenney
IPC分类号： G06T15/06 , G06T15/55 , G06T15/30 , G06T9/00
CPC分类号： G06T15/06 , G06T9/00 , G06T15/30 , G06T15/506 , G06T15/55
摘要： Ray tracing systems process rays through a 3D scene to determine intersections between rays and geometry in the scene, for rendering an image of the scene. Ray direction data for a ray can be compressed, e.g. into an octahedral vector format. The compressed ray direction data for a ray may be represented by two parameters (u,v) which indicate a point on the surface of an octahedron. In order to perform intersection testing on the ray, the ray direction data for the ray is unpacked to determine x, y and z components of a vector to a point on the surface of the octahedron. The unpacked ray direction vector is an unnormalised ray direction vector. Rather than normalising the ray direction vector, the intersection testing is performed on the unnormalised ray direction vector. This avoids the processing steps involved in normalising the ray direction vector.

2. 发明授权

US09990762B2 Image processing apparatus and method 有权
公开(公告)号：US09990762B2
公开(公告)日：2018-06-05
申请号：US14945753
申请日：2015-11-19
申请人： SAMSUNG ELECTRONICS CO., LTD.
发明人： Minsu Ahn , Seungin Park , Inwoo Ha , Hyong Euk Lee
IPC分类号： G06T15/50 , G06T15/10 , G06T15/55 , G06T15/80
CPC分类号： G06T15/506 , G06T15/50 , G06T15/55 , G06T15/80
摘要： An image processing apparatus includes a calculator configured to calculate a first difference value between frames in terms of either one or both of a position and a direction of a direct light by comparing a current frame to at least one previous frame, and a determiner configured to determine that an indirect light of the current frame is to be sampled in response to the first difference value being greater than or equal to a threshold.

3. 发明授权

US09715758B2 Image processing apparatus and method using virtual point light (VPL) information 有权
公开(公告)号：US09715758B2
公开(公告)日：2017-07-25
申请号：US14325684
申请日：2014-07-08
申请人： SAMSUNG ELECTRONICS CO., LTD.
发明人： Min Su Ahn , In Woo Ha , Hyong Euk Lee
IPC分类号： G06T15/50 , G06T15/55
CPC分类号： G06T15/50 , G06T15/55
摘要： A sampler of an image processing apparatus may sample at least one first virtual point light (VPL) from a direct light view. The sampler may sample a second VPL in a three-dimensional (3D) space independent of the direct light view. A calculator may calculate a luminance of the second VPL using a first VPL adjacent to the second VPL selected from among the at least one first VPL.

4. 发明申请

US20160239998A1 DEVICE AND METHOD FOR ESTIMATING A GLOSSY PART OF RADIATION 审中-公开
标题翻译：估计辐射部分的装置和方法
公开(公告)号：US20160239998A1
公开(公告)日：2016-08-18
申请号：US15044083
申请日：2016-02-15
申请人： THOMSON LICENSING
发明人： Pascal LECOCQ , Gael Sourimant , Jean-Eudes MARVIE
IPC分类号： G06T15/83 , G06T1/20 , G06T15/55 , G06T15/50
CPC分类号： G06T15/83 , G06T1/20 , G06T15/506 , G06T15/55
摘要： The present invention relates to a glossy part of radiation is estimated coming from a surface illuminated by area light source(s) having source surface(s) (A) bounded by edge curves, by determining integrand function(s) representative of that glossy part. The latter corresponding to an integration of the integrand function along the edge curves. In this respect, the integrand function(s) is/are approximated by means of peak-shape function(s) having a known antiderivative over the edge curves, and the glossy part is computed from analytical expressions associated with integrations of the peak-shape function(s) along the edge curves. Such invention can offer efficient and accurate computation for specular part of reflection as well as glossy transmission, and is notably relevant to real-time rendering.
摘要翻译：本发明涉及通过确定代表该光泽部分的被积函数来估计来自由具有由边缘曲线限定的源表面（A）的区域光源照射的表面的辐射的光泽部分，。后者对应于被积函数沿着边缘曲线的积分。在这方面，被积函数通过在边缘曲线上具有已知反偏差的峰形函数来近似，并且光泽部分由与峰形的积分相关联的解析表达式计算沿边缘曲线的函数。这种发明可以为反射的镜面部分以及有光泽的透射提供有效和准确的计算，并且与实时渲染显着相关。

5. 发明申请

US20150235410A1 IMAGE PROCESSING APPARATUS AND METHOD 审中-公开
标题翻译：图像处理装置和方法
公开(公告)号：US20150235410A1
公开(公告)日：2015-08-20
申请号：US14623954
申请日：2015-02-17
申请人： Samsung Electronics Co., Ltd.
发明人： In Woo HA , MinSu AHN , Hyoung Euk LEE
IPC分类号： G06T15/50 , G06T15/20 , G06T15/60 , G06T19/00
CPC分类号： G06T15/60 , G06T15/04 , G06T15/40 , G06T15/55 , G06T2215/12
摘要： An image processing apparatus to calculate a visibility with respect to a plurality of virtual point lights (VPL) sampled at a three-dimensional (3D) model includes at least one first VPL included in a screen scene associated with a viewpoint to render and at least one second VPL not found in the screen scene, and may calculate a first probability obtained by calculating a visibility between a first area including the first VPL and a first point with respect to the at least one first VPL.
摘要翻译：用于计算相对于在三维（3D）模型中采样的多个虚拟点光（VPL）的可见度的图像处理装置包括包括在与要呈现的视点相关联的屏幕场景中的至少一个第一VPL，并且至少在屏幕场景中没有发现一秒钟的VPL，并且可以计算通过相对于至少一个第一VPL计算包括第一VPL的第一区域和第一点之间的可视性而获得的第一概率。

6. 发明申请

US20140327690A1 SYSTEM, METHOD, AND COMPUTER PROGRAM PRODUCT FOR COMPUTING INDIRECT LIGHTING IN A CLOUD NETWORK 有权
标题翻译：系统，方法和计算机程序产品，用于计算云网络中的间接照明
公开(公告)号：US20140327690A1
公开(公告)日：2014-11-06
申请号：US14058132
申请日：2013-10-18
申请人： NVIDIA Corporation
发明人： Morgan McGuire , Cyril Jean-Francois Crassin , David Patrick Luebke , Michael Thomas Mara , Brent L. Oster , Peter Schuyler Shirley , Peter-Pike J. Sloan , Christopher Ryan Wyman
IPC分类号： G09G5/10
CPC分类号： G06T15/55 , A63F13/355 , G06T15/005
摘要： A system, method, and computer program product are provided for computing indirect lighting in a cloud network. In operation, one or more scenes for rendering are identified. Further, indirect lighting associated with the one or more scenes is identified. Additionally, computation associated with the indirect lighting is performed in a cloud network utilizing at least one of a voxel-based algorithm, a photon-based algorithm, or an irradiance-map-based algorithm.
摘要翻译：提供了一种用于在云网络中计算间接照明的系统，方法和计算机程序产品。在操作中，识别用于呈现的一个或多个场景。此外，识别与一个或多个场景相关联的间接照明。另外，使用基于体素的算法，基于光子的算法或基于辐照度映射的算法中的至少一个，在云网络中执行与间接照明相关联的计算。

7. 发明申请

US20090147002A1 SYSTEM AND METHOD FOR GENERATING PIXEL VALUES FOR PIXELS IN AN IMAGE USING STRICTLY DETERMINISTIC METHODOLOGIES FOR GENERATING SAMPLE POINTS 审中-公开
标题翻译：使用严格决定性方法生成样本点的图像中的像素生成像素值的系统和方法
公开(公告)号：US20090147002A1
公开(公告)日：2009-06-11
申请号：US12272005
申请日：2008-11-17
申请人： Alexander Keller
发明人： Alexander Keller
IPC分类号： G06T15/50
CPC分类号： G06T15/06 , G06T15/506 , G06T15/55
摘要： A computer graphics system generates a pixel value for a pixel in an image, the pixel being representative of a point in a scene as recorded on an image plane of a simulated camera. The computer graphics system comprises a sample point generator and a function evaluator. The sample point generator is configured to generate a set of sample points representing at least one simulated element of the simulated camera, the sample points representing elements of, illustratively, for sample points on the image plane, during time intervals during which the shutter is open, and on the lens, a Hammersley sequence, and, for use in global illumination, a scrambled Halton sequence. The function evaluator is configured to generate at least one value representing an evaluation of a selected function at sample points generated by the sample point generator, those values corresponding to the pixel value.
摘要翻译：计算机图形系统为图像中的像素生成像素值，该像素代表记录在模拟相机的图像平面上的场景中的点。计算机图形系统包括采样点发生器和功能评估器。采样点发生器被配置为在快门打开的时间间隔期间生成表示模拟相机的至少一个模拟元素的采样点集合，采样点表示例如图像平面上的采样点的元素，并且在镜头上是Hammersley序列，并且在全局照明中使用加扰的Halton序列。功能评估器被配置为在由采样点发生器产生的采样点处产生表示所选择的函数的评估的至少一个值，对应于像素值的那些值。

8. 发明授权

US07432935B2 Image synthesis methods and systems for generating sample points in a graphics scene 有权
标题翻译：用于在图形场景中生成采样点的图像合成方法和系统
公开(公告)号：US07432935B2
公开(公告)日：2008-10-07
申请号：US11465717
申请日：2006-08-18
申请人： Alexander Keller
发明人： Alexander Keller
IPC分类号： G09G5/00 , G06T15/00
CPC分类号： G06F17/10 , G06T11/001 , G06T15/06 , G06T15/506 , G06T15/55
摘要： The invention provides systems and computer-implemented methods for evaluating integrals using quasi-Monte Carlo methodologies, and in particular embodiments, adaptive quasi-Monte Carlo integration and adaptive integro-approximation in conjunction with techniques including a scrambled Halton Sequence, stratification by radical inversion, stratified samples from the Halton Sequence, deterministic scrambling, bias elimination by randomization, adaptive and deterministic anti-aliasing, anti-aliasing by rank-1 lattices, and trajectory splitting by dependent sampling and rank-1 lattices.
摘要翻译：本发明提供了使用准蒙特卡罗方法来评估积分的系统和计算机实现的方法，并且在特定实施例中，结合包括加扰的Halton序列，通过自旋反演分层的技术的自适应准蒙特卡罗积分和自适应积分近似，来自Halton序列的分层样本，确定性扰频，随机化偏移消除，自适应和确定性抗锯齿，等级1晶格的抗锯齿，以及依赖抽样和秩1格点的轨迹分割。

9. 发明授权

US07358971B2 Generating images using ray tracing and ray tree generated using low-discrepancy sequences 有权
标题翻译：使用光线跟踪和使用低差异序列生成的射线树生成图像
公开(公告)号：US07358971B2
公开(公告)日：2008-04-15
申请号：US11676796
申请日：2007-02-20
申请人： Alexander Keller
发明人： Alexander Keller
IPC分类号： G06T17/00
CPC分类号： G06T15/506 , G06T15/06 , G06T15/55
摘要： Computer graphics apparatus, methods and systems and program products operable to generate and display human-perceptible images, comprise a ray tracer operable to generate a ray tree, the ray tree comprising a primary ray shot along a selected direction and a plurality of other rays, the other rays being generated by recursive splitting. A ray is split when it encounters a predetermined condition, and each of the rays into which it is split is directed along a selected direction. The ray tracer comprises a low-discrepancy sequence generator an condition detector and a ray generator. The low-discrepancy sequence generator is configured to generate elements of at least one low-discrepancy sequence. The condition detector is configured to determine, for one of the rays in the ray tree, whether the one of the rays encounters the predetermined condition. The ray generator is configured to, when the condition detector makes a positive determination in connection with the one of the rays, generate a selected number “M” of split rays each along a splitting, direction determined by a respective direction value.
摘要翻译：可操作以产生和显示人类可感知图像的计算机图形装置，方法和系统和程序产品包括可操作以产生射线树的射线追踪器，所述射线树包括沿所选方向的一次射线射线和多个其它射线，其他光线是通过递归分割生成的。当遇到预定条件时，射线被分裂，并且其中被分裂的射线中的每个射线沿选定的方向被引导。射线追踪器包括一个低差异序列发生器，一个条件检测器和一个射线发生器。低差异序列发生器被配置为生成至少一个低差异序列的元素。条件检测器被配置为针对射线树中的一个射线确定射线中的一个是否遇到预定条件。射线发生器被配置为当条件检测器与一条光线相结合时确定正确时，沿着由相应的方向值确定的分割方向产生分割光线的选定数量“M”。

10. 发明申请

US20080043018A1 INSTANT RAY TRACING 有权
标题翻译：即时追踪
公开(公告)号：US20080043018A1
公开(公告)日：2008-02-21
申请号：US11737424
申请日：2007-04-19
申请人： ALEXANDER KELLER , CARSTEN WAECHTER
发明人： ALEXANDER KELLER , CARSTEN WAECHTER
IPC分类号： G06T15/50
CPC分类号： G06T15/40 , G06T15/06 , G06T15/506 , G06T15/55
摘要： Methods, systems, devices and computer program products operable in a computer graphics system include constructing a hierarchical ray tracing acceleration data structure comprising a tree structure, the modes of which are generated utilizing a bounding interval hierarchy based on defining an axis-aligned scene bounding box and two parallel planes to partition a set of objects in a sense into left objects and right objects, and matching split planes to object bounding boxes. The two planes are perpendicular to a selected one of x, y, or z-axes. Given a splitting plane, each object in an image is classified either left or right based on a left/right selection criterion, and two splitting plane values of the child modes are determined by the maximum and minimum coordinate of the left and right objects, respectively.
摘要翻译：可在计算机图形系统中操作的方法，系统，设备和计算机程序产品包括构建包括树状结构的分层光线跟踪加速度数据结构，其结构基于定义轴对齐的场景边界框，利用边界间隔层级生成和两个平行的平面，用于将某一意义上的一组对象分割成左对象和右对象，以及将拆分平面与对象边界框匹配。两个平面垂直于x，y或z轴中选定的一个。给定分割平面，图像中的每个对象基于左/右选择标准被分类为左或右，并且子模式的两个分割平面值分别由左和右对象的最大和最小坐标确定。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式