公开(公告)号：US08804837B2

公开(公告)日：2014-08-12

申请号：US13545414

申请日：2012-07-10

申请人： Dake He ,  Ashish Jagmohan ,  Ligang Lu

发明人： Dake He ,  Ashish Jagmohan ,  Ligang Lu

IPC分类号： H04N11/02

CPC分类号： H04N19/395 ,  H04N19/103 ,  H04N19/18 ,  H04N19/48

摘要： A method and system are disclosed for selecting a mode to encode video data. The method comprises the steps of (a) transforming a source video frame into a set of coefficients, (b) partitioning said set of coefficients into a plurality of subsets of the coefficients on the basis of probability statistics corresponding to a plurality of encoding modes, wherein each of said subsets is identified for encoding by one of the plurality of encoding modes. The method comprises the further steps of (c) for each of the plurality of subsets of coefficients, computing defined parameters of an associated probability distribution for said subset, and (d) repeating steps (b) and (c) until a predetermined termination condition is satisfied. When this predetermined termination condition is satisfied, the subsets of coefficients, as they exist at that time, are output to a video encoder, which preferably is a Wyner-Ziv encoder.

摘要翻译： 公开了一种用于选择对视频数据进行编码的模式的方法和系统。 该方法包括以下步骤：（a）将源视频帧变换成一组系数，（b）基于对应于多个编码模式的概率统计，将所述系数集合划分成系数的多个子集， 其中所述子集中的每一个被识别用于通过所述多个编码模式之一进行编码。 该方法还包括以下步骤：（c）针对所述多个系数子集中的每一个，计算所述子集的关联概率分布的定义参数，以及（d）重复步骤（b）和（c）直到预定终止条件 满意 当满足该预定终止条件时，如同在那时存在的系数子集被输出到视频编码器，其优选地是Wyner-Ziv编码器。

公开(公告)号：US20130346998A1

公开(公告)日：2013-12-26

申请号：US13531799

申请日：2012-06-25

申请人： Ligang Lu ,  Michael Peter Perrone

发明人： Ligang Lu ,  Michael Peter Perrone

IPC分类号： G06F9/46

CPC分类号： G06F9/5083

摘要： Systems and techniques for computational load balancing. A problem space is partitioned into subspaces and the subspaces are assigned to processing nodes. The load of nodes associated with outer subspaces is compared with the load of nodes associated with inner subspaces, and partition boundary adjustments are made based on the relative loads of outer versus inner subspaces.

摘要翻译： 用于计算负载平衡的系统和技术。 问题空间被划分为子空间，子空间被分配给处理节点。 将与外部子空间相关联的节点的负载与与内部子空间相关联的节点的负载进行比较，并且基于外部与内部子空间的相对负载进行分区边界调整。

公开(公告)号：US20130197877A1

公开(公告)日：2013-08-01

申请号：US13362754

申请日：2012-01-31

申请人： Ligang Lu ,  Michael P. Perrone

发明人： Ligang Lu ,  Michael P. Perrone

IPC分类号： G06F17/11 ,  G06G7/48

CPC分类号： G01V99/00 ,  E21B44/00 ,  G01V1/282 ,  G01V2210/614 ,  G01V2210/665 ,  G01V2210/667 ,  G01V2210/67

摘要： A system, method and computer program product for generating probabilistic models of a subsurface region of the earth of interest. The system, method can be implemented efficiently to enable real-time imaging of a sub-surface structure. The system, method can provide users with the ability to assess where their subsurface images are reliable and where they are not in order to assist in the selection of low-risk, high-reward sights indicated as having oil potential for drilling. The system, method allows users to estimate a degree of uncertainty to be expected when drilling in a specific location. The knowledge of this uncertainly can be used to guide drilling in real-time to reduce the time to oil (and thereby the cost of drilling), increase the efficiency of drill maintenance and reduce the risk associated with incorrectly identifying the depth at which pressure might spike.

摘要翻译： 一种用于生成感兴趣的地球的地下区域的概率模型的系统，方法和计算机程序产品。 该系统的方法可以有效地实现，以实现子表面结构的实时成像。 该系统的方法可以使用户能够评估地下图像的可靠性，以及它们不在何处，以帮助选择具有钻井潜力的低风险，高回报景点。 该系统的方法允许用户估计在特定位置钻探时预期的不确定程度。 这种不确定的知识可以用于实时引导钻井，以减少油的时间（从而降低钻井成本），提高钻井维护的效率，并降低与错误识别压力深度相关的风险 穗。

公开(公告)号：US08396256B2

公开(公告)日：2013-03-12

申请号：US12731579

申请日：2010-03-25

申请人： Ligang Lu ,  Brent Paulovicks ,  Michael Peter Perrone ,  Vadim Sheinin

发明人： Ligang Lu ,  Brent Paulovicks ,  Michael Peter Perrone ,  Vadim Sheinin

IPC分类号： G06K9/00 ,  G06F15/80 ,  G01C1/00

CPC分类号： G06T17/05 ,  G06T1/20 ,  G06T2200/28 ,  G06T2210/52

摘要： Techniques are disclosed for parallel computing of a line of sight (LoS) map (e.g., view-shed) in a parallel computing system. For example, a method for computing an LoS map comprises the following steps. Data representing at least one image is obtained. An observation point in the at least one image is identified. A portion of the data that is associated with a given area in the image is partitioned into a plurality of sub-areas. The plurality of sub-areas are assigned to a plurality of processor elements of a parallel computing system, respectively, such that the data associated with each one of the plurality of sub-areas is processed independent from the data associated with each other of the plurality of sub-areas, wherein results of the processing by the processor elements represents the LoS map. The parallel computing system may be a multicore processor.

摘要翻译： 公开了用于并行计算并行计算系统中的视线（LoS）映射（例如，视图）的技术。 例如，用于计算LoS映射的方法包括以下步骤。 获得表示至少一个图像的数据。 识别至少一个图像中的观察点。 与图像中的给定区域相关联的数据的一部分被划分为多个子区域。 多个子区域分别被分配给并行计算系统的多个处理器元件，使得与多个子区域中的每一个子区域相关联的数据被独立于与多个子区段中的彼此相关联的数据进行处理 的子区域，其中由处理器元件处理的结果表示LoS映射。 并行计算系统可以是多核处理器。

公开(公告)号：US20090268818A1

公开(公告)日：2009-10-29

申请号：US12111677

申请日：2008-04-29

申请人： Ligang Lu ,  Vadim Sheinin

发明人： Ligang Lu ,  Vadim Sheinin

IPC分类号： H04N7/32 ,  H04N7/26

CPC分类号： H04N19/85 ,  H04N19/117 ,  H04N19/137 ,  H04N19/61 ,  H04N19/82

摘要： A method and system are disclosed for coding and filtering video data. The method comprises the steps of using a predictive coding technique to compress a stream of video data, integrating a noise filtering process into said predictive coding technique, and using said noise filtering process to noise filter said stream of video data while compressing said stream of video data. In the preferred embodiment of the invention, the stream of video data is comprised of a series of macroblocks, including a current macroblock and at least one reference macroblock. Also, in this preferred embodiment, the step of using a predictive coding technique includes the step of calculating the difference between the current macroblock and the at least one reference macroblock, and the step of integrating the noise filtering process includes the step of integrating the noise filtering process into said step of calculating. The invention may be used with a forward predictive code mode and with a bi-directional predictive mode.

摘要翻译： 公开了用于编码和过滤视频数据的方法和系统。 该方法包括以下步骤：使用预测编码技术来压缩视频数据流，将噪声滤波处理整合到所述预测编码技术中，以及使用所述噪声滤波处理对所述视频数据流进行噪声滤波，同时压缩所述视频流 数据。 在本发明的优选实施例中，视频数据流由包括当前宏块和至少一个参考宏块的一系列宏块构成。 此外，在本实施方式中，使用预测编码技术的步骤包括计算当前宏块与至少一个参考宏块之间的差的步骤，并且对噪声滤波处理进行积分的步骤包括对噪声进行积分的步骤 过滤进入所述计算步骤。 本发明可以与前向预测码模式和双向预测模式一起使用。

公开(公告)号：US20080112483A1

公开(公告)日：2008-05-15

申请号：US12016049

申请日：2008-01-17

申请人： Ligang Lu ,  Shan Liu

发明人： Ligang Lu ,  Shan Liu

IPC分类号： H04N7/12

CPC分类号： H04N19/40

摘要： A video transcoding method is provided for transcoding a first signal stream compressed by a first coding scheme to a second signal stream compressed by a second coding scheme. The method employs an adaptive frame rate and a joint temporal-spatial rate control technique, such that the overall quality of compressed MPEG video can be significantly enhanced when the transcoding is controlled in the joint temporal (picture or frame rate) and spatial (quantization) domains. One embodiment considers transcoding from high bit rate video with larger image size (e.g. 4CIF/4SIF, CIF) coded by one coding technique, e.g., MPEG-2 to a lower bit rate video with smaller image size (e.g. CIF, QCIF) coded by the same or another coding technique, e.g., MPEG-4.

摘要翻译： 提供了一种视频转码方法，用于将由第一编码方案压缩的第一信号流转码为由第二编码方案压缩的第二信号流。 该方法采用自适应帧速率和联合时空速率控制技术，使得当在联合时间（图像或帧速率）和空间（量化）控制中进行代码转换时，可以显着增强压缩MPEG视频的总体质量， 域名 一个实施例考虑通过一种编码技术（例如MPEG-2）将较大图像大小（例如4CIF / 4SIF，CIF）的高比特率视频代码转换为具有较小图像大小的较低比特率视频（例如，CIF，QCIF），其由 相同或另一种编码技术，例如MPEG-4。

公开(公告)号：US20070160144A1

公开(公告)日：2007-07-12

申请号：US11327072

申请日：2006-01-06

申请人： Ligang Lu ,  Vadim Sheinin

发明人： Ligang Lu ,  Vadim Sheinin

IPC分类号： H04N11/02 ,  H04N7/12

CPC分类号： H04N19/521 ,  H04N19/40 ,  H04N19/51 ,  H04N19/513 ,  H04N19/553 ,  H04N19/56 ,  H04N19/577 ,  H04N19/895

摘要： The present invention relates to computer-based systems and methods for visual signal extrapolation or interpolation based on statistic similarity estimation. Specifically, a first and a second reference pictures are provided, and motion estimation is conducted on the first and second reference pictures to generate motion vectors indicative of movement of at least one of the first and second reference pictures in relation to the other. Subsequently, an estimate picture is generated by extrapolation or interpolation from the first and/or the second reference picture using the motion vectors, followed by optional refinement of the estimate picture. Statistic similarity estimation is used either in motion estimation or in refining the estimate picture, or a combination of both, so as to provide improved visual signals.

摘要翻译： 本发明涉及基于计算机的系统和方法，用于基于统计相似度估计的视觉信号外插或插值。 具体地，提供第一和第二参考图片，并且对第一和第二参考图片进行运动估计，以产生指示第一和第二参考图片中的至少一个相对于另一参考图片的移动的运动矢量。 随后，使用运动矢量从第一参考图像和/或第二参考图像进行外推或内插生成估计图像，随后可选地细化估计图像。 统计学相似度估计用于运动估计或精简估计图像，或两者的组合，以便提供改进的视觉信号。

公开(公告)号：US09207992B2

公开(公告)日：2015-12-08

申请号：US13557696

申请日：2012-07-25

申请人： Ligang Lu ,  Michael Peter Perrone

发明人： Ligang Lu ,  Michael Peter Perrone

IPC分类号： G06F9/46 ,  G06F15/173 ,  G06F9/50

CPC分类号： G06F9/5083

摘要： Systems and techniques for computational load balancing. A problem space is partitioned into subspaces and the subspaces are assigned to processing nodes. The load of nodes associated with outer subspaces is compared with the load of nodes associated with inner subspaces, and partition boundary adjustments are made based on the relative loads of outer versus inner subspaces.

公开(公告)号：US08983779B2

公开(公告)日：2015-03-17

申请号：US13364054

申请日：2012-02-01

申请人： Lurng-Kuo Liu ,  Ligang Lu ,  Michael P. Perrone

发明人： Lurng-Kuo Liu ,  Ligang Lu ,  Michael P. Perrone

IPC分类号： G01V1/30

CPC分类号： G01V1/303

摘要： A system and method implementing a hierarchical approach to RTM (Reverse Time Migration) seismic imaging at different granularity in space and time. An RTM seismic imaging algorithm utilizes RTM technique to convert a parallel problem into one solved using massive domain partitioning. In the method, a coarse-grain grid for the 3D volume of the geological subsurface structure under investigation is initially processed, permitting the RTM imaging process to be performed faster and produces lower level seismic image for inspection. Criteria are then applied to the first level of seismic image to determine whether to reject the image or whether a finer resolution seismic imaging is needed. In the case of finer resolution is needed, RTM resolution for the target volume is adjusted accordingly and RTM imaging process is applied with the new resolution. The process is repeated until either the image is accepted or rejected.

摘要翻译： 一种以时间和空间不同粒度实现RTM（反向时间迁移）地震成像分层方法的系统和方法。 RTM地震成像算法利用RTM技术将并行问题转化为使用大规​​模域划分解决的问题。 在该方法中，对初步处理的地质地下结构三维体积的粗粒格栅进行了初步处理，使RTM成像过程更快地进行，产生较低水平的地震图像进行检查。 然后将标准应用于第一级地震图像，以确定是否拒绝图像，还是需要更精细的分辨率地震成像。 在需要更精细的分辨率的情况下，相应地调整目标体积的RTM分辨率，并使用新分辨率应用RTM成像过程。 重复该过程直到图像被接受或拒绝。

公开(公告)号：US20130346999A1

公开(公告)日：2013-12-26

申请号：US13557696

申请日：2012-07-25

申请人： Ligang Lu ,  Michael Peter Perrone

发明人： Ligang Lu ,  Michael Peter Perrone

IPC分类号： G06F9/46

CPC分类号： G06F9/5083

摘要： Systems and techniques for computational load balancing. A problem space is partitioned into subspaces and the subspaces are assigned to processing nodes. The load of nodes associated with outer subspaces is compared with the load of nodes associated with inner subspaces, and partition boundary adjustments are made based on the relative loads of outer versus inner subspaces.