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公开(公告)号:US20090219286A1
公开(公告)日:2009-09-03
申请号:US12038814
申请日:2008-02-28
申请人: Li-Yi Wei , Baoquan Liu , Xu Yang , Ying-Qing Xu , Baining Guo
发明人: Li-Yi Wei , Baoquan Liu , Xu Yang , Ying-Qing Xu , Baining Guo
IPC分类号: G06T17/00
CPC分类号: G06T15/005 , G06T15/06
摘要: A non-linear beam tracing technique that supports full non-linear beam tracing effects including multiple reflections and refractions for computer graphics applications. The technique introduces non-linear beam tracing to render non-linear ray tracing effects such as curved mirror reflection, refraction, caustics, and shadows. Beams are allowed to be non-linear where rays within the same beam are not parallel or do not intersect at a single point. Such is the case when a primary beam bounces off of a surface and spawns one or more secondary rays or beams. Secondary beams can be rendered in a similar manner to primary rays or beams via polygon streaming. Beyond smooth ray bundles, the technique can also be applied to incoherent ray bundles which is useful for rendering bump mapped surfaces.
摘要翻译: 支持完整非线性光束跟踪效果的非线性光束跟踪技术,包括计算机图形应用的多重反射和折射。 该技术引入非线性光束跟踪以渲染非线性光线跟踪效果,例如曲面镜反射,折射,焦散和阴影。 允许光束在同一光束内的光线不平行或不在单个点处相交时是非线性的。 如果主光束从表面反射并产生一个或多个二次光束或光束,则是这种情况。 次级光束可以通过多边形流以与初级光束或光束相似的方式呈现。 除了平滑的光束束之外,该技术也可以应用于对于渲染凹凸贴图表面有用的非相干光束。
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公开(公告)号:US08411087B2
公开(公告)日:2013-04-02
申请号:US12038814
申请日:2008-02-28
申请人: Li-Yi Wei , Baoquan Liu , Xu Yang , Ying-Qing Xu , Baining Guo
发明人: Li-Yi Wei , Baoquan Liu , Xu Yang , Ying-Qing Xu , Baining Guo
IPC分类号: G06T17/00
CPC分类号: G06T15/005 , G06T15/06
摘要: A non-linear beam tracing technique that supports full non-linear beam tracing effects including multiple reflections and refractions for computer graphics applications. The technique introduces non-linear beam tracing to render non-linear ray tracing effects such as curved mirror reflection, refraction, caustics, and shadows. Beams are allowed to be non-linear where rays within the same beam are not parallel or do not intersect at a single point. Such is the case when a primary beam bounces off of a surface and spawns one or more secondary rays or beams. Secondary beams can be rendered in a similar manner to primary rays or beams via polygon streaming. Beyond smooth ray bundles, the technique can also be applied to incoherent ray bundles which is useful for rendering bump mapped surfaces.
摘要翻译: 支持完整非线性光束跟踪效果的非线性光束跟踪技术,包括计算机图形应用的多重反射和折射。 该技术引入非线性光束跟踪以渲染非线性光线跟踪效果,例如曲面镜反射,折射,焦散和阴影。 允许光束在同一光束内的光线不平行或不在单个点处相交时是非线性的。 如果主光束从表面反射并产生一个或多个二次光束或光束,则是这种情况。 次级光束可以通过多边形流以与初级光束或光束相似的方式呈现。 除了平滑的光束束之外,该技术也可以应用于对于渲染凹凸贴图表面有用的非相干光束。
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公开(公告)号:US20070018996A1
公开(公告)日:2007-01-25
申请号:US11189491
申请日:2005-07-25
申请人: Lifeng Wang , Xu Yang , Baining Guo , Heung-Yeung Shum
发明人: Lifeng Wang , Xu Yang , Baining Guo , Heung-Yeung Shum
IPC分类号: G09G5/02
CPC分类号: G06T15/50
摘要: Rendering of a partially translucent object is performed using a set of parameter maps derived from data measuring reflectance and transmittance of light received at the surface of the partially translucent object. Data is captured from an actual object being modeled, rather than estimated based on internal structure and composition. Parameter maps relating albedo, thickness variation, and specular intensity and roughness are stored as textures to facilitate rendering. In addition, realistic illumination from high energy sources such as sunlight is effected by separating light into low frequency and high frequency components. Low frequency components are rendered by precomputed radiance transfer. High frequency components, which are not modeled well by precomputed radiance transfer, are modeled using a light visibility convolution integral to generate light visibility maps for positions of the high frequency light source. Contributions from the different frequency components are combined to yield a realistic appearance.
摘要翻译: 使用从测量在部分半透明物体的表面处接收的光的反射率和透射率的数据导出的一组参数图来执行部分半透明物体的渲染。 数据从被建模的实际对象中获取,而不是基于内部结构和组合来估计。 将反照率,厚度变化和镜面强度和粗糙度相关的参数图存储为纹理以便于渲染。 此外,通过将光分离成低频和高频分量来实现来自诸如阳光的高能源的现实照明。 低频分量通过预先计算的辐射传输来渲染。 通过预先计算的辐射传输良好地建模的高频分量使用光可见度卷积积分来建模,以产生高频光源的位置的光可见度图。 来自不同频率分量的贡献被组合以产生现实的外观。
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公开(公告)号:US07589723B2
公开(公告)日:2009-09-15
申请号:US11189491
申请日:2005-07-25
申请人: Lifeng Wang , Xu Yang , Baining Guo , Heung-Yeung Shum
发明人: Lifeng Wang , Xu Yang , Baining Guo , Heung-Yeung Shum
CPC分类号: G06T15/50
摘要: Rendering of a partially translucent object is performed using a set of parameter maps derived from data measuring reflectance and transmittance of light received at the surface of the partially translucent object. Data is captured from an actual object being modeled, rather than estimated based on internal structure and composition. Parameter maps relating albedo, thickness variation, and specular intensity and roughness are stored as textures to facilitate rendering. In addition, realistic illumination from high energy sources such as sunlight is effected by separating light into low frequency and high frequency components. Low frequency components are rendered by precomputed radiance transfer. High frequency components, which are not modeled well by precomputed radiance transfer, are modeled using a light visibility convolution integral to generate light visibility maps for positions of the high frequency light source. Contributions from the different frequency components are combined to yield a realistic appearance.
摘要翻译: 使用从测量在部分半透明物体的表面处接收的光的反射率和透射率的数据导出的一组参数图来执行部分半透明物体的渲染。 数据从被建模的实际对象中获取,而不是基于内部结构和组合来估计。 将反照率,厚度变化以及镜面强度和粗糙度相关的参数图存储为纹理以便于渲染。 此外,通过将光分离成低频和高频分量来实现来自诸如阳光的高能源的现实照明。 低频分量通过预先计算的辐射传输来渲染。 通过预先计算的辐射传输良好地建模的高频分量使用光可见度卷积积分来建模,以产生高频光源的位置的光可见度图。 来自不同频率分量的贡献被组合以产生现实的外观。
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公开(公告)号:US08626812B2
公开(公告)日:2014-01-07
申请号:US12790645
申请日:2010-05-28
申请人: Xu Yang , Xiaolin Quan , Dongmei Zhang
发明人: Xu Yang , Xiaolin Quan , Dongmei Zhang
IPC分类号: G06F7/72
摘要: A hybrid greatest common divisor (GCD) calculator analyzes characteristics of polynomials and selects a particular GCD algorithm from multiple available GCD algorithms based on a combination of characteristics of the polynomials. The selected GCD algorithm is then applied to calculate the GCD of the polynomials.
摘要翻译: 混合最大公约数(GCD)计算器分析多项式的特征,并且基于多项式的特征的组合从多个可用的GCD算法中选择特定的GCD算法。 然后应用所选择的GCD算法来计算多项式的GCD。
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公开(公告)号:US20130191381A1
公开(公告)日:2013-07-25
申请号:US13381069
申请日:2011-09-26
申请人: Huaxing Jin , Wei Zheng , Peng Huang , Xu Yang , Feng Lin , Jiong Feng , Qin Zhang
发明人: Huaxing Jin , Wei Zheng , Peng Huang , Xu Yang , Feng Lin , Jiong Feng , Qin Zhang
IPC分类号: G06F17/30
CPC分类号: G06F17/3053 , G06F17/30964
摘要: Ordering search results may include obtaining an exposed log file from a log system, computing a Bayesian posterior probability for relevancy between the log file and a search request, computing an expected value of the relevancy between the log file and the search request based on the Bayesian posterior probability, storing the search request and an identifier of the log file as a key and the expected value of the relevancy between the log file and the search request as a value into a search data structure, in response to receiving a search request submitted by a user, finding expected values of relevancy between the submitted search request and log files that are relevant to the submitted search request from the search data structure, and ordering the found log files in a descending order of the expected values.
摘要翻译: 订购搜索结果可以包括从日志系统获取暴露的日志文件,计算日志文件和搜索请求之间的相关性的贝叶斯后验概率,基于贝叶斯计算日志文件和搜索请求之间的相关性的期望值 后验概率,响应于接收到由所述搜索请求提交的搜索请求,将所述搜索请求和所述日志文件的标识符作为密钥存储,并将所述日志文件和所述搜索请求之间的相关性的期望值作为值存储到搜索数据结构中 一个用户,从搜索数据结构中找到所提交的搜索请求和与提交的搜索请求相关的日志文件之间的相关性的预期值,并按照预期值的降序对找到的日志文件进行排序。
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公开(公告)号:US08154863B2
公开(公告)日:2012-04-10
申请号:US12715650
申请日:2010-03-02
申请人: Xu Yang , Zhan-Yang Li
发明人: Xu Yang , Zhan-Yang Li
CPC分类号: G11B33/124 , G06F1/187
摘要: A data storage device assembly includes a rack, a mounting member, and a handle. The rack has a data storage device mounted therein. The mounting member is secured on the rack. The mounting member defines a receiving room. A clamp is slidably received in the receiving room. The clamp includes two spaced elastic claws. The handle is pivotally mounted on the mounting member. The handle includes a clasp. The handle is rotatable on the mounting member between a first position and a second position. In the first position, the clamp is located in the receiving room, the two spaced elastic claws are restricted by edges of the receiving room, and the clasp is fastened between the two elastic claws. In the second position, the clamp is located out of the receiving room, and the clasp is not fastened between the two elastic claws.
摘要翻译: 数据存储设备组件包括机架,安装构件和把手。 机架上安装有数据存储装置。 安装构件固定在机架上。 安装构件限定了接收室。 夹具可滑动地容纳在接收室中。 夹具包括两个间隔开的弹性爪。 手柄枢转地安装在安装构件上。 把手包括一个表扣。 手柄可在安装构件上在第一位置和第二位置之间旋转。 在第一位置,夹具位于接收室中,两个间隔开的弹性爪被接收室的边缘限制,并且该扣环紧固在两个弹性爪之间。 在第二位置,夹具位于接收室外,并且扣环没有紧固在两个弹性爪之间。
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公开(公告)号:US20100198902A1
公开(公告)日:2010-08-05
申请号:US12364533
申请日:2009-02-03
申请人: Xu Yang , Zhouchen Lin , Sijun Liu , Tianjun Ye
发明人: Xu Yang , Zhouchen Lin , Sijun Liu , Tianjun Ye
IPC分类号: G06F7/552
CPC分类号: G06F17/10
摘要: Described is a technology, such as implemented in a computational software program, by which a minimal polynomial is efficiently determined for a radical expression based upon its structure of the radical expression. An annihilation polynomial is found based upon levels of the radical to obtain roots of the radical. A numerical method performs a zero test or multiple zero tests to find the minimal polynomial. In one implementation, the set of roots corresponding to a radical expression is found. The annihilation polynomial is computed by grouping roots of the set according to their conjugation relationship and multiplying factor polynomials level by level. A selection mechanism selects the minimal polynomial based upon the annihilation polynomial's factors.
摘要翻译: 描述了一种技术,例如在计算软件程序中实现的技术,通过该技术,基于其基本表达式的结构,有效地确定基本表达式的最小多项式。 基于获得根的根的自由基的水平找到湮灭多项式。 数值方法执行零测试或多零测试以找到最小多项式。 在一个实现中,找到与激进表达相对应的一组根。 湮灭多项式通过根据它们的共轭关系和乘法因子多项式级别逐级分组的根来计算。 选择机制根据湮灭多项式的因素选择最小多项式。
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公开(公告)号:US07692647B2
公开(公告)日:2010-04-06
申请号:US11532052
申请日:2006-09-14
申请人: Zhouchen Lin , Lifeng Wang , Tian Fang , Xu Yang , Xuan Yu , Jian Wang , Xiaoou Tang
发明人: Zhouchen Lin , Lifeng Wang , Tian Fang , Xu Yang , Xuan Yu , Jian Wang , Xiaoou Tang
CPC分类号: G06T13/60 , G06T2210/56
摘要: Real-time rendering of realistic rain is described. In one aspect, image samples of real rain and associated information are automatically modeled in real-time to generate synthetic rain particles in view of respective scene radiances of target video content frames. The synthetic rain particles are rendered in real-time using pre-computed radiance transfer with uniform random distribution across respective frames of the target video content.
摘要翻译: 描述了实时降雨的实时渲染。 在一个方面,根据目标视频内容帧的相应场景辐射,实时地自动建模真实雨和相关信息的图像样本以产生合成雨粒子。 使用预先计算的辐射传输,通过目标视频内容的各个帧上的均匀随机分布实时地渲染合成雨粒子。
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公开(公告)号:US09122563B2
公开(公告)日:2015-09-01
申请号:US12422315
申请日:2009-04-13
申请人: Xu Yang , Zhouchen Lin , Sijun Liu , Tianjun Ye , Dongmei Zhang
发明人: Xu Yang , Zhouchen Lin , Sijun Liu , Tianjun Ye , Dongmei Zhang
摘要: Described is a technology, such as implemented in a computational software program, by which a minimal polynomial is efficiently determined for a radical expression over the ring Z of integer numbers or the ring Q of rational numbers. The levels of the radical are grouped into a level permutation group that is used to find a level permutation set. An annihilation polynomial is found based upon the level permutation set. The annihilation polynomial is factored, and a selection mechanism selects the minimal polynomial based upon the annihilation polynomial's factors.
摘要翻译: 描述了一种技术,例如在计算软件程序中实现的技术,通过该技术,对于整数的环Z或有理数的环Q,对于根基表达式有效地确定最小多项式。 激进的级别被分组成用于找到级别置换集合的级别置换组。 湮没多项式是基于层次排列集合找到的。 湮灭多项式被考虑,选择机制根据湮灭多项式的因素选择最小多项式。
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