公开(公告)号：US20090252146A1

公开(公告)日：2009-10-08

申请号：US12061661

申请日：2008-04-03

申请人： Chong Luo ,  Wei Pu ,  Feng Wu ,  Shipeng Li ,  Chang Wen Chen

发明人： Chong Luo ,  Wei Pu ,  Feng Wu ,  Shipeng Li ,  Chang Wen Chen

IPC分类号： H04L12/28

CPC分类号： H04B7/15521 ,  H03M13/1102 ,  H03M13/2906 ,  H03M13/3761 ,  H04L1/0057 ,  H04L1/0077 ,  H04L2001/0097

摘要： Described is continuous network coding, in which a relay sends probability data comprising a continuous number for use as parity data. The node receives streams of bits sent from sources towards a destination, and computes the probability data based on current noise data and/or fading data. A selected set of the bits (all or some subset thereof) are combined, e.g., XOR-ed or concatenated, and send to the destination. Phase modulation is performed to convey probability information based on the probability data. The destination demodulates the signal to obtain the probability information, and combines the probability information with the data directly received from sources to perform joint decoding. The number of bits in the set of selected bits may be adaptively chosen based on current channel conditions, e.g., increased when the channel conditions from the sources directly to a destination are poor relative to the channel conditions via the relay.

摘要翻译： 描述了连续网络编码，其中中继发送包括用作奇偶校验数据的连续数字的概率数据。 节点接收从源向目的地发送的比特流，并且基于当前噪声数据和/或衰落数据计算概率数据。 选择的一组位（其全部或某些子集）被组合，例如XOR编辑或级联，并发送到目的地。 执行相位调制以基于概率数据传送概率信息。 目的地解调信号以获得概率信息，并且将概率信息与从源直接接收的数据组合以执行联合解码。 可以基于当前信道条件来自适应地选择所选位组中的比特数，例如，当从源直接到目的地的信道条件相对于经由中继的信道条件差时，增加。

公开(公告)号：US08358693B2

公开(公告)日：2013-01-22

申请号：US11457705

申请日：2006-07-14

申请人： Yan Lu ,  Feng Wu ,  Wei Pu ,  Shipeng Li

发明人： Yan Lu ,  Feng Wu ,  Wei Pu ,  Shipeng Li

IPC分类号： H04N7/12 ,  H04N11/02

CPC分类号： H04N19/567 ,  H04N19/127 ,  H04N19/156 ,  H04N19/172 ,  H04N19/19 ,  H04N19/196 ,  H04N19/43 ,  H04N19/533 ,  H04N19/557

摘要： Computation scheduling and allocation for visual communication is described. In one aspect, multiple frames of video data are encoded by allocating for at least a subset of inter-coded frames, on frame-by-frame basis, computational resources to encode the inter-coded frame. To this end, a computational budget to encode a current inter-coded frame is estimated. The estimate is based on the actual computational costs to encode a previous inter-coded frame of video data. Next, sets of operations associated with encoding the current inter-coded frame are analyzed to determine computational resources to implement the operations. If the computational resources exceed the computational budget, complexity of the operations is reduced until the associated computational resources are less than or equal to the computational budget. At this point, the current inter-coded frame is encoded using the operations and the computational budget. This process is repeated for the remaining inter-coded frames of video data.

摘要翻译： 描述视觉通信的计算调度和分配。 在一个方面，通过在逐帧的基础上为帧间编码帧的至少一个子集分配计算资源来编码帧间编码帧来编码多个视频数据帧。 为此，估计用于编码当前帧间编码帧的计算预算。 该估计是基于对先前的视频数据的帧间编码帧进行编码的实际计算成本。 接下来，分析与当前帧间编码帧的编码相关联的操作集合，以确定用于实现操作的计算资源。 如果计算资源超过计算预算，则减少操作的复杂度，直到相关的计算资源小于或等于计算预算。 此时，使用操作和计算预算对当前帧间编码帧进行编码。 对于视频数据的剩余帧间编码帧重复该过程。

公开(公告)号：US20080013628A1

公开(公告)日：2008-01-17

申请号：US11457705

申请日：2006-07-14

申请人： Yan Lu ,  Feng Wu ,  Wei Pu ,  Shipeng Li

发明人： Yan Lu ,  Feng Wu ,  Wei Pu ,  Shipeng Li

IPC分类号： H04N7/12

CPC分类号： H04N19/567 ,  H04N19/127 ,  H04N19/156 ,  H04N19/172 ,  H04N19/19 ,  H04N19/196 ,  H04N19/43 ,  H04N19/533 ,  H04N19/557

摘要： Computation scheduling and allocation for visual communication is described. In one aspect, multiple frames of video data are encoded by allocating for at least a subset of inter-coded frames, on frame-by-frame basis, computational resources to encode the inter-coded frame. To this end, a computational budget to encode a current inter-coded frame is estimated. The estimate is based on the actual computational costs to encode a previous inter-coded frame of video data. Next, sets of operations associated with encoding the current inter-coded frame are analyzed to determine computational resources to implement the operations. If the computational resources exceed the computational budget, complexity of the operations is reduced until the associated computational resources are less than or equal to the computational budget. At this point, the current inter-coded frame is encoded using the operations and the computational budget. This process is repeated for the remaining inter-coded frames of video data.

摘要翻译： 描述视觉通信的计算调度和分配。 在一个方面，通过在逐帧的基础上为帧间编码帧的至少一个子集分配计算资源来编码帧间编码帧来编码多个视频数据帧。 为此，估计用于编码当前帧间编码帧的计算预算。 该估计是基于对先前的视频数据的帧间编码帧进行编码的实际计算成本。 接下来，分析与当前帧间编码帧的编码相关联的操作集合，以确定用于实现操作的计算资源。 如果计算资源超过计算预算，则减少操作的复杂度，直到相关的计算资源小于或等于计算预算。 此时，使用操作和计算预算对当前帧间编码帧进行编码。 对于视频数据的剩余帧间编码帧重复该过程。

公开(公告)号：US07953224B2

公开(公告)日：2011-05-31

申请号：US11419464

申请日：2006-05-19

申请人： Bin Zhu ,  Chang Wen Chen ,  Shipeng Li ,  Yang Yang

发明人： Bin Zhu ,  Chang Wen Chen ,  Shipeng Li ,  Yang Yang

IPC分类号： H04L9/00

CPC分类号： H04N7/1675 ,  H04N19/20 ,  H04N19/34 ,  H04N21/2347 ,  H04N21/8451

摘要： A method and system for encrypting a video compressed with MPEG-4 FGS compression with minimal overhead is provided. The encryption system encrypts the video into independently encrypted segments that can be either a video packet or a video block. When the encryption system encrypts based on video packets, it encrypts the data to ensure that the encrypted data does not emulate any video packet delimiting markers. When the encryption system encrypts based on video blocks, it encrypts the coded bitstream for each video block independently, from the most significant bitplane to the least significant bitplane, using either a stream or a block cipher. After all the video blocks are independently encrypted, the encryption system partitions the encrypted data into video packets and adds a buffering bit, if necessary, to prevent emulation of video packet delimiting markers. The encryption system may generate an initialization vector for each independently encrypted segment.

摘要翻译： 提供了一种用于以最小的开销加密以MPEG-4FGS压缩压缩的视频的方法和系统。 加密系统将视频加密成可以是视频分组或视频块的独立加密的分段。 当加密系统基于视频数据包进行加密时，它对数据进行加密，以确保加密的数据不会模拟任何视频数据包分隔标记。 当加密系统基于视频块加密时，它使用流或分组密码，从最高有效位平面到最低有效位平面，独立地加密每个视频块的编码位流。 在所有视频块被独立加密之后，加密系统将加密的数据分割成视频分组，并在必要时添加缓冲位以防止视频分组分隔标记的仿真。 加密系统可以为每个独立加密的段生成初始化向量。

公开(公告)号：US20050256925A1

公开(公告)日：2005-11-17

申请号：US10837315

申请日：2004-04-30

申请人： Chong Luo ,  Jiang Li ,  Shipeng Li

发明人： Chong Luo ,  Jiang Li ,  Shipeng Li

IPC分类号： H04L12/18 ,  H04L29/06 ,  G06F15/16

CPC分类号： H04L12/1822 ,  H04L12/1854 ,  H04L65/4046

摘要： The techniques and mechanisms described herein are directed to controlling communication paths between conference members in a decentralized multi-party conference that supports a full mesh architecture. Several check points are tested in order to handle concurrency issues and to ensure quality of service. First, a check is made to determine whether any pending communication paths exist between the two systems. Second, a check is made to determine whether one of the systems is in the process of leaving the multi-party conference. Third, a check is made to determine whether a maximum number of conference members already exist in the conference. Upon failing any of these checks, the communication path between the two systems fails. Upon success, the new system initiates the joining process with each of the other members in the conference in order to maintain the full mesh architecture.

摘要翻译： 本文描述的技术和机制旨在控制支持全网状架构的分散式多方会议中的会议成员之间的通信路径。 测试了几个检查点，以处理并发问题并确保服务质量。 首先，检查两个系统之间是否存在任何挂起的通信路径。 第二，进行检查以确定其中一个系统是否正在离开多方会议。 第三，进行检查以确定会议中是否已经存在最多会议成员。 在任何这些检查失败之后，两个系统之间的通信路径失败。 成功后，新系统将启动会议中每个其他成员的加入过程，以维护完整的网状结构。

公开(公告)号：US07552175B2

公开(公告)日：2009-06-23

申请号：US10837315

申请日：2004-04-30

申请人： Chong Luo ,  Jiang Li ,  Shipeng Li

发明人： Chong Luo ,  Jiang Li ,  Shipeng Li

IPC分类号： G06F15/16

CPC分类号： H04L12/1822 ,  H04L12/1854 ,  H04L65/4046

摘要： The techniques and mechanisms described herein are directed to controlling communication paths between conference members in a decentralized multi-party conference that supports a full mesh architecture. Several check points are tested in order to handle concurrency issues and to ensure quality of service. First, a check is made to determine whether any pending communication paths exist between the two systems. Second, a check is made to determine whether one of the systems is in the process of leaving the multi-party conference. Third, a check is made to determine whether a maximum number of conference members already exist in the conference. Upon failing any of these checks, the communication path between the two systems fails. Upon success, the new system initiates the joining process with each of the other members in the conference in order to maintain the full mesh architecture.

摘要翻译： 本文描述的技术和机制旨在控制支持全网状架构的分散式多方会议中的会议成员之间的通信路径。 测试了几个检查点，以处理并发问题并确保服务质量。 首先，检查两个系统之间是否存在任何挂起的通信路径。 第二，进行检查以确定其中一个系统是否正在离开多方会议。 第三，进行检查，以确定会议中是否已经存在最多会议成员。 在任何这些检查失败之后，两个系统之间的通信路径失败。 成功后，新系统将启动会议中每个其他成员的加入过程，以维护完整的网状结构。

公开(公告)号：US07760659B2

公开(公告)日：2010-07-20

申请号：US10912488

申请日：2004-08-05

申请人： Chong Luo ,  Jiang Li ,  Shipeng Li

发明人： Chong Luo ,  Jiang Li ,  Shipeng Li

IPC分类号： G01R31/08

CPC分类号： H04L65/403 ,  H04L12/1827 ,  H04L12/185 ,  H04L12/1886 ,  H04L29/06027 ,  H04L45/12 ,  H04L45/16 ,  H04L45/48 ,  H04L65/4046 ,  H04M3/567 ,  H04M7/006 ,  H04M2203/5009 ,  H04N7/152

摘要： Transmission optimization for application-level multicast is described. For each member of a video conference, a multicast tree is generated that represents a data communication configuration of a data source and the other members of a video conference which are data recipients that receive video and audio data from the data source. An end-to-end transmission delay from each data source to each of the respective data recipients is determined, and the available bandwidth between each data source and the respective data recipients is determined. One or more of the multicast trees, each corresponding to a data source, are refined according to the end-to-end transmission delay and available bandwidth for a particular data source to optimize the data communication configuration of the data source in the video conference.

摘要翻译： 描述了应用层组播的传输优化。 对于视频会议的每个成员，生成表示数据源和作为从数据源接收视频和音频数据的数据接收者的视频会议的其他成员的数据通信配置的多播树。 确定从每个数据源到每个相应数据接收者的端到端传输延迟，并且确定每个数据源和各个数据接收者之间的可用带宽。 根据用于特定数据源的端到端传输延迟和可用带宽来改进每个对应于数据源的一个或多个多播树，以优化视频会议中的数据源的数据通信配置。

公开(公告)号：US20060029092A1

公开(公告)日：2006-02-09

申请号：US10912488

申请日：2004-08-05

申请人： Chong Luo ,  Jiang Li ,  Shipeng Li

发明人： Chong Luo ,  Jiang Li ,  Shipeng Li

IPC分类号： H04J3/26

CPC分类号： H04L65/403 ,  H04L12/1827 ,  H04L12/185 ,  H04L12/1886 ,  H04L29/06027 ,  H04L45/12 ,  H04L45/16 ,  H04L45/48 ,  H04L65/4046 ,  H04M3/567 ,  H04M7/006 ,  H04M2203/5009 ,  H04N7/152

摘要： Transmission optimization for application-level multicast is described. For each member of a video conference, a multicast tree is generated that represents a data communication configuration of a data source and the other members of a video conference which are data recipients that receive video and audio data from the data source. An end-to-end transmission delay from each data source to each of the respective data recipients is determined, and the available bandwidth between each data source and the respective data recipients is determined. One or more of the multicast trees, each corresponding to a data source, are refined according to the end-to-end transmission delay and available bandwidth for a particular data source to optimize the data communication configuration of the data source in the video conference.

摘要翻译： 描述了应用层组播的传输优化。 对于视频会议的每个成员，生成表示数据源和作为从数据源接收视频和音频数据的数据接收者的视频会议的其他成员的数据通信配置的多播树。 确定从每个数据源到每个相应数据接收者的端到端传输延迟，并且确定每个数据源和各个数据接收者之间的可用带宽。 根据用于特定数据源的端到端传输延迟和可用带宽来改进每个对应于数据源的一个或多个多播树，以优化视频会议中的数据源的数据通信配置。

公开(公告)号：US08498476B2

公开(公告)日：2013-07-30

申请号：US13429208

申请日：2012-03-23

申请人： Yan Lu ,  Wen Sun ,  Feng Wu ,  Shipeng Li

发明人： Yan Lu ,  Wen Sun ,  Feng Wu ,  Shipeng Li

IPC分类号： G06K9/00

CPC分类号： G06T9/00

摘要： A method for compressing a high dynamic range (HDR) texture. A first block of texels of the HDR texture in a red-green-blue (RGB) space may be transformed to a second block of texels in a luminance-chrominance space. The first block may have red values, green values and blue values. The second block may have luminance values and chrominance values. The chrominance values may be based on a sum of the red values, a sum of the green values and a sum of the blue values. The luminance values and the chrominance values may be converted to an 8-bit integer format. The luminance values may be modified to restore a local linearity property to the second block. The second block may be compressed.

摘要翻译： 一种用于压缩高动态范围（HDR）纹理的方法。 红 - 绿 - 蓝（RGB）空间中的HDR纹理的纹素的第一块可以被变换为亮度 - 色度空间中的第二纹理纹理块。 第一个块可能具有红色值，绿色值和蓝色值。 第二块可以具有亮度值和色度值。 色度值可以基于红色值的总和，绿色值的和与蓝色值的和。 亮度值和色度值可以被转换成8位整数格式。 可以修改亮度值以恢复与第二块的局部线性特性。 第二个块可能被压缩。

公开(公告)号：US08208556B2

公开(公告)日：2012-06-26

申请号：US11768862

申请日：2007-06-26

申请人： Xiaoyan Sun ,  Chunbo Zhu ,  Feng Wu ,  Shipeng Li

发明人： Xiaoyan Sun ,  Chunbo Zhu ,  Feng Wu ,  Shipeng Li

IPC分类号： H04N11/04

CPC分类号： G06T7/40 ,  G06T2207/10016 ,  H04N19/27 ,  H04N19/577

摘要： Systems and methods for video coding using spatio-temporal texture synthesis are described. In one aspect, a video data coding pipeline portion of the codec removes texture blocks from the video data to generate coded video data. The removed texture blocks are selected based on an objective determination that each of the remove texture blocks can be synthesized from spatio-temporal neighboring samples during decoding operations. The objective determinations are made using local block-based motion information independent of global motion models. An indication of which texture blocks were removed is provided to a decoder in addition to the coded video data. Decoding logic of the codec decodes the video data using a standard decoding algorithm. The decoding logic also restores the removed texture blocks via spatio-temporal texture synthesis to generate synthesized video data. The decoded and synthesized video data is presented to a user.

摘要翻译： 描述使用时空纹理合成的视频编码的系统和方法。 一方面，编解码器的视频数据编码流水线部分从视频数据中去除纹理块以产生编码视频数据。 基于在解码操作期间可以从空时相邻采样中合成每个去除纹理块的目标确定来选择去除的纹理块。 使用与全局运动模型无关的局部基于块的运动信息进行客观确定。 去除了纹理块的指示除了编码的视频数据之外还提供给解码器。 编解码器的解码逻辑使用标准解码算法解码视频数据。 解码逻辑还通过空间 - 时间纹理合成恢复去除的纹理块，以产生合成的视频数据。 解码和合成的视频数据被呈现给用户。