公开(公告)号：US20180014010A1

公开(公告)日：2018-01-11

申请号：US15448586

申请日：2017-03-02

申请人： Wei Dai ,  Zesen Zhuang ,  Jian Lou ,  Qianzong Chen ,  Jiali Li

发明人： Wei Dai ,  Zesen Zhuang ,  Jian Lou ,  Qianzong Chen ,  Jiali Li

IPC分类号： H04N19/105 ,  H04N19/115 ,  H04N19/15 ,  H04N19/59 ,  H04N19/172 ,  H04N19/184

CPC分类号： H04N19/105 ,  H04N19/114 ,  H04N19/115 ,  H04N19/15 ,  H04N19/164 ,  H04N19/172 ,  H04N19/184 ,  H04N19/58 ,  H04N19/59 ,  H04N21/6373

摘要： System and methods of managing reference frame adaptively for video communication under a network are provided. For connection process, based on the network types of all clients and network conditions the system adaptively decides the interval between each I frame, the bitrate of the encoded bit steams, and the resolution of the encoded video to achieve quick connection. Based on the feedback of other clients and network conditions, the system may decide to re-enter the connection stage. For communication process, according to the feedback from other clients and the network conditions, the system may set the appropriate reference frame(s) for the current frame, manage the reference frame(s) in the DPB to be long/short term reference frame(s) or mark them as unused for reference; mark the current frame to be a long term reference frame, a short term reference frame, unused for reference or skip encoding the current frame; adaptively change the ratio of long term reference frame(s) with respect to the short term reference frame(s) in the DPB; adaptively change the frequency ratio of marking the current frame as long term reference frame and marking the current frame as short term reference frame.

公开(公告)号：US09172967B2

公开(公告)日：2015-10-27

申请号：US13253385

申请日：2011-10-05

申请人： Jian Lou ,  Krit Panusopone ,  Limin Wang

发明人： Jian Lou ,  Krit Panusopone ,  Limin Wang

IPC分类号： H04N7/12 ,  H04N19/18 ,  H04N19/196 ,  H04N19/13 ,  H04N19/134 ,  H04N19/61 ,  H04N19/463 ,  H04N19/136

CPC分类号： H04N19/18 ,  H04N19/13 ,  H04N19/134 ,  H04N19/136 ,  H04N19/196 ,  H04N19/463 ,  H04N19/61

摘要： There is a coding. The coding may include preparing video compression data based on source pictures utilizing a processor. The preparing may include processing a generated transform unit, including generating a significance map having a significance map array with y-x locations corresponding to the transform array. The generating may include scanning, utilizing a zigzag scanning pattern, a plurality of significance map elements in the significance map array. The generating may also include determining, utilizing the zigzag scanning pattern, a context model for coding a significance map element of the plurality of significance map elements based on a value associated with at least one coded neighbor significance map element of the significance map element in the significance map array. There is also a decoding including processing video compression data which is generated in the coding.

摘要翻译： 有一个编码。 编码可以包括利用处理器来准备基于源图像的视频压缩数据。 所述准备可以包括处理所生成的变换单元，包括生成具有与所述变换数组对应的y-x位置的重要性映射数组的重要性映射。 生成可以包括使用锯齿形扫描图案扫描显着图数组中的多个有效图元素。 该生成还可以包括：基于与至少一个编码的相邻重要性映射要素相关联的值来确定利用Z字形扫描模式来编码多个有效图元素的有效图元素的上下文模型 意义地图数组。 还包括处理在编码中生成的视频压缩数据的解码。

公开(公告)号：US08953690B2

公开(公告)日：2015-02-10

申请号：US13363432

申请日：2012-02-01

申请人： Jian Lou ,  Krit Panusopone ,  Limin Wang

发明人： Jian Lou ,  Krit Panusopone ,  Limin Wang

IPC分类号： H04N7/30 ,  H03M7/30 ,  H03M7/40 ,  H04N19/18 ,  H04N19/436 ,  H04N19/13 ,  H04N19/102

CPC分类号： H03M7/6023 ,  H03M7/4018 ,  H04N19/13 ,  H04N19/18 ,  H04N19/436 ,  H04N19/91

摘要： In various embodiments, a significance map of a matrix of video data coefficients is encoded or decoded using context-based adaptive binary arithmetic coding (CABAC). The significance map scanned line-by-line along a scanning pattern. Each line may be a vertical, horizontal, or diagonal section of the scanning pattern. Context models for each element processed in a particular line are chosen based on values of neighboring elements that are not in the line. The neighboring elements may be limited to those contained within one or two other scanning lines. Avoiding reliance on neighbors that are in the same scanning line facilitates parallel processing.

摘要翻译： 在各种实施例中，使用基于上下文的自适应二进制算术编码（CABAC）对视频数据系数矩阵的显着图进行编码或解码。 沿着扫描模式逐行扫描的重要性图。 每行可以是扫描图案的垂直，水平或对角线部分。 基于不在行中的相邻元素的值来选择在特定行中处理的每个元素的上下文模型。 相邻的元件可以限于包含在一个或两个其它扫描线内的元件。 避免依赖于相同扫描行中的邻居有助于并行处理。

公开(公告)号：US20130016785A1

公开(公告)日：2013-01-17

申请号：US13351782

申请日：2012-01-17

申请人： Limin Wang ,  Yue Yu ,  Jian Lou

发明人： Limin Wang ,  Yue Yu ,  Jian Lou

IPC分类号： H04N7/34

CPC分类号： H04N19/196 ,  H04N19/176 ,  H04N19/197 ,  H04N19/52

摘要： In one embodiment, a spatial merge mode for a block of video content may be used in merging motion parameters. Spatial merge parameters are considered and do not require utilization of bits or flags or indexing to signal at the encoder or decoder. If the spatial merge mode is determined, the method merges the block of video content with a spatially-located block, where merging shares motion parameters between the spatially-located block and the block of video content.

摘要翻译： 在一个实施例中，用于视频内容块的空间合并模式可用于合并运动参数。 考虑空间合并参数，并且不需要使用位或标志或索引以在编码器或解码器处发信号。 如果确定空间合并模式，则该方法将视频内容块与空间位置块合并，其中合并在空间位置块和视频内容块之间共享运动参数。

公开(公告)号：US20120230407A1

公开(公告)日：2012-09-13

申请号：US13415901

申请日：2012-03-09

申请人： Koohyar Minoo ,  David M. Baylon ,  Jian Lou ,  Krit Panusopone ,  Limin Wang

发明人： Koohyar Minoo ,  David M. Baylon ,  Jian Lou ,  Krit Panusopone ,  Limin Wang

IPC分类号： H04N7/36

CPC分类号： H04N19/523 ,  H04N19/117 ,  H04N19/46

摘要： In one embodiment, a method for encoding or decoding video content is provided. The method includes determining a set of interpolation filters for use in interpolating sub-pel pixel values and a mapping between interpolation filters in the set of interpolation filters and different prediction indexes of the video content. A unit of video content is received and a prediction index is determined in a plurality of prediction indexes that are used to determine a prediction block for the unit of video content. The method then determines an interpolation filter in the set of interpolation filters based on a mapping between the interpolation filter and the prediction index to interpolate a sub-pel pixel value for use in a temporal prediction process for the unit of video content.

摘要翻译： 在一个实施例中，提供了一种用于编码或解码视频内容的方法。 该方法包括确定用于内插子像素像素值的插值滤波器集合以及内插滤波器组中的插值滤波器之间的映射以及视频内容的不同预测索引。 接收视频内容的单位，并且在用于确定视频内容单元的预测块的多个预测索引中确定预测索引。 然后，该方法基于内插滤波器和预测索引之间的映射来确定内插滤波器组中的内插滤波器，以内插用于视频内容单元的时间预测处理中的子像素像素值。

公开(公告)号：US07876257B2

公开(公告)日：2011-01-25

申请号：US12110834

申请日：2008-04-28

申请人： Anthony Vetro ,  Shan Liu ,  Jian Lou ,  Stephen R. Burgess

发明人： Anthony Vetro ,  Shan Liu ,  Jian Lou ,  Stephen R. Burgess

IPC分类号： G01S13/90

CPC分类号： G01S13/90 ,  G01S7/003 ,  H03M7/30 ,  H03M7/4006

摘要： A method compresses synthetic aperture radar (SAR) data by sampling the SAR data into blocks and transforming each block to a corresponding block of transform coefficients. Each block of transform coefficient is quantized according to a quantization parameter to obtain a corresponding block of quantized transform coefficients, which are demultiplexed into sets of blocks of quantized transform coefficients. The quantized transform coefficients in the blocks in each set are arithmetically encoding in parallel according to a probability model to produce an intermediate bitstream for each set of blocks. The encoding of the quantized transform coefficients of one block is independent of the quantized transform coefficients of a successive block. The intermediate of bitstreams are then multiplexed to a compressed bitstream, which can be transmitted, or stored, for subsequent decoding to construct an SAR image.

摘要翻译： 一种方法通过将SAR数据采样到块中并将每个块变换成相应的变换系数块来压缩合成孔径雷达（SAR）数据。 根据量化参数对变换系数的每个块进行量化，以获得相应的量化变换系数块，其被解复用为量化变换系数块集合。 每组中块中的量化变换系数根据概率模型并行进行算术编码，以产生每组块的中间比特流。 一个块的量化变换系数的编码与连续块的量化变换系数无关。 然后将比特流的中间复用到可以被发送或存储的压缩比特流，以便后续解码以构建SAR图像。

公开(公告)号：US07689052B2

公开(公告)日：2010-03-30

申请号：US11423387

申请日：2006-06-09

申请人： Gary J. Sullivan ,  Jian Lou

发明人： Gary J. Sullivan ,  Jian Lou

IPC分类号： G06K9/36

CPC分类号： G06F17/147

摘要： Close approximations of ideal linear transforms, such as the forward and inverse discrete cosine transformation (DCT), are formed with minimum complexity using fixed-point arithmetic. The transformation is decomposed into a smaller set of transformations (e.g., the LLM decomposition of the DCT). The multiplication factors of the decomposition are then approximated by a fixed-point representation. However, instead of simply applying scaling and rounding operations to produce fixed-point approximations closest to the multiplication factors themselves, fixed-point multiplication factors are chosen that have the effect (after the cascaded operations of the various stages of decomposition) of being the closest feasible approximations of the entries in the resulting complete ideal transformation matrix.

摘要翻译： 使用定点算法以最小复杂度形成理想线性变换的近似，例如正向和反向离散余弦变换（DCT）。 该变换被分解成较小的一组变换（例如，DCT的LLM分解）。 然后，分解的乘法因子用定点表示近似。 然而，不是简单地应用缩放和舍入操作来产生最接近乘法因子本身的定点近似，而是选择具有效应的定点乘法因子（在各种分解阶段的级联操作之后）是最接近的 所得到的完整理想变换矩阵中条目的可行逼近。

公开(公告)号：US20070081734A1

公开(公告)日：2007-04-12

申请号：US11423387

申请日：2006-06-09

申请人： Gary Sullivan ,  Jian Lou

发明人： Gary Sullivan ,  Jian Lou

IPC分类号： G06K9/36

CPC分类号： G06F17/147

摘要： Close approximations of ideal linear transforms, such as the forward and inverse discrete cosine transformation (DCT), are formed with minimum complexity using fixed-point arithmetic. The transformation is decomposed into a smaller set of transformations (e.g., the LLM decomposition of the DCT). The multiplication factors of the decomposition are then approximated by a fixed-point representation. However, instead of simply applying scaling and rounding operations to produce fixed-point approximations closest to the multiplication factors themselves, fixed-point multiplication factors are chosen that have the effect (after the cascaded operations of the various stages of decomposition) of being the closest feasible approximations of the entries in the resulting complete ideal transformation matrix.

摘要翻译： 使用定点算法以最小复杂度形成理想线性变换的近似，例如正向和反向离散余弦变换（DCT）。 该变换被分解成较小的一组变换（例如，DCT的LLM分解）。 然后，分解的乘法因子用定点表示近似。 然而，不是简单地应用缩放和舍入操作来产生最接近乘法因子本身的定点近似，而是选择具有效应的定点乘法因子（在各种分解阶段的级联操作之后）是最接近的 所得到的完整理想变换矩阵中条目的可行逼近。

公开(公告)号：US07203792B2

公开(公告)日：2007-04-10

申请号：US10835892

申请日：2004-04-29

申请人： Chang Jian Lou ,  Fang He

发明人： Chang Jian Lou ,  Fang He

IPC分类号： G06F12/00

CPC分类号： G06F17/30067

摘要： A method for modifying file contents of a flash file stored in a flash memory while balancing wear of the flash memory includes: finding first file nodes recording the file contents to be modified; searching for a plurality of void file nodes in the flash memory, selecting void nodes as second file nodes, and sequencing the second nodes based on node versions thereof; writing modified contents of the first nodes to one or more of the second nodes in ascending order of node versions of the second nodes; building node link information of the second nodes that have been written; marking the first nodes with a predetermined flag; vacating the first nodes that have been marked with the predetermined flag, and canceling node link information of the first nodes; and updating node versions of the second nodes that have been written and the first nodes that have been vacated.

摘要翻译： 一种用于在平衡闪存的磨损的同时修改存储在闪存中的闪存文件的文件内容的方法包括：找到记录要修改的文件内容的第一文件节点; 搜索闪存中的多个空白文件节点，选择空格节点作为第二文件节点，并根据其节点版本对第二节点排序; 以第二节点的节点版本的升序将第一节点的修改内容写入一个或多个第二节点; 构建已经写入的第二节点的节点链接信息; 用预定标志标记第一个节点; 取消已经标记了预定标志的第一节点，并且取消第一节点的节点链接信息; 并更新已经写入的第二个节点的节点版本和已经腾空的第一个节点。

公开(公告)号：US10652532B2

公开(公告)日：2020-05-12

申请号：US15448586

申请日：2017-03-02

申请人： Wei Dai ,  Zesen Zhuang ,  Jian Lou ,  Qianzong Chen ,  Jiali Li

发明人： Wei Dai ,  Zesen Zhuang ,  Jian Lou ,  Qianzong Chen ,  Jiali Li

IPC分类号： H04N19/105 ,  H04N19/164 ,  H04N19/114 ,  H04N19/58 ,  H04N21/6373 ,  H04N19/115 ,  H04N19/15 ,  H04N19/172 ,  H04N19/59 ,  H04N19/184

摘要： System and methods of managing reference frame adaptively for video communication under a network are provided. The system adaptively decides the interval between each I frame, the bitrate of the encoded bit steams, and the resolution of the encoded video to achieve quick connection. The system may set the appropriate reference frame(s) for the current frame, manage the reference frame(s) in the DPB to be long/short term reference frame(s) or mark them as unused for reference; mark the current frame to be a long term reference frame, a short term reference frame, unused for reference or skip encoding the current frame; adaptively change the ratio of long term reference frame(s) with respect to the short term reference frame(s) in the DPB; adaptively change the frequency ratio of marking the current frame as long term reference frame and marking the current frame as short term reference frame.