HIGH SPEED VIDEO ACTION RECOGNITION AND LOCALIZATION
    21.
    发明申请
    HIGH SPEED VIDEO ACTION RECOGNITION AND LOCALIZATION 有权
    高速视频行动识别和本地化

    公开(公告)号:US20080310734A1

    公开(公告)日:2008-12-18

    申请号:US11764754

    申请日:2007-06-18

    IPC分类号: G06K9/62 G09G5/00

    摘要: An apparatus for detecting an action in a test video. In an illustrative embodiment, the apparatus includes a first mechanism for receiving a query for a particular action via a query video. A second mechanism employs motion vectors associated with the test video to compute one or more motion-similarity values. The one or more motion-similarity values represent motion similarity between a first group of pixels in a first frame of a query video and a second group of pixels in a second frame of the test video based on the motion vectors. A third mechanism uses the one or more similarity values to search for the particular action or similar action in the test video. In a more specific embodiment, another mechanism aggregates the similarity values over a predetermined number of frames to facilitate estimating where the particular action or version thereof occurs or is likely to occur in the test video.

    摘要翻译: 一种用于检测测试视频中的动作的装置。 在说明性实施例中,该装置包括用于经由查询视频接收针对特定动作的查询的第一机制。 第二机制使用与测试视频相关联的运动矢量来计算一个或多个运动相似度值。 一个或多个运动相似性值表示基于运动矢量的查询视频的第一帧中的第一组像素与测试视频的第二帧中的第二组像素之间的运动相似度。 第三种机制使用一个或多个相似性值来搜索测试视频中的特定动作或类似动作。 在更具体的实施例中,另一种机制在预定数量的帧上聚合相似度值,以便于估计其测试视频中发生或可能发生的特定动作或版本的位置。

    Transcoding multimedia information within a network communication system
    22.
    发明授权
    Transcoding multimedia information within a network communication system 有权
    在网络通信系统内转码多媒体信息

    公开(公告)号:US07444418B2

    公开(公告)日:2008-10-28

    申请号:US10143441

    申请日:2002-05-09

    IPC分类号: G06F15/16

    摘要: Multimedia information communicated between a transmitter and a receiver may be transcoded by intercepting the multimedia information within a network communication system. The available transmission rate of the downlink channel may be estimated by, for example, calculating a ratio of the smoothed round trip time of packets communicated to the receiver and a smoothed congestion window associated with the downlink channel. If the transmission rate at which the multimedia information is encoded is greater than the available transmission rate, the multimedia information may be transcoded to conform the multimedia information to the available transmission rate. The transcoded multimedia information may then be transmitted to the receiver over the downlink channel using a transmission timer.

    摘要翻译: 通过在网络通信系统内拦截多媒体信息,可以在发射机和接收机之间传送的多媒体信息进行转码。 可以通过例如计算传送到接收机的分组的平滑的往返时间和与下行链路信道相关联的平滑拥塞窗口的比率来估计下行链路信道的可用传输速率。 如果多媒体信息被编码的传输速率大于可用的传输速率,则可以对多媒体信息进行转码以使多媒体信息符合可用的传输速率。 然后可以使用传输定时器通过下行链路信道将经代码转换的多媒体信息发送到接收机。

    Encoding and decoding of digital data using cues derivable at a decoder
    23.
    发明申请
    Encoding and decoding of digital data using cues derivable at a decoder 有权
    使用可在解码器导出的提示对数字数据进行编码和解码

    公开(公告)号:US20050031219A1

    公开(公告)日:2005-02-10

    申请号:US10651854

    申请日:2003-08-29

    摘要: Encoding digital data by using cues at a decoder. An encoder selects an index to indicate a target codeword from the complete space of all codewords to a decoder. The index identifies a group or a set of codewords that contain the target codeword. The sets are represented by a bit-length that is smaller than the code word bit-length thus achieving compression. Two or more codewords in such a set are separated by a predetermined distance and all such sets of codewords considered together form the complete space of all codewords. The encoder sends syntax information, including the index, to specify the decoding. The decoder then uses a set of candidate cues in a comparison operation to determine the target codeword from the indexed set. Processing complexity can be allocated among the encoder, decoder and other possible devices as, for example, in a digital network.

    摘要翻译: 在解码器上使用提示对数字数据进行编码。 编码器从所有码字的完整空间中选择索引以指示目标码字到解码器。 索引标识包含目标码字的组或一组码字。 这些集合由比特长度小的代码字比特长度来表示,从而实现压缩。 这样的集合中的两个或更多个码字被隔开预定的距离,并且所有这些一起考虑的码字集合形成所有码字的完整空间。 编码器发送语法信息,包括索引,以指定解码。 解码器然后在比较操作中使用一组候选提示来确定来自索引集合的目标码字。 处理复杂度可以在编码器,解码器和其他可能的设备中分配,例如在数字网络中。

    Section division operating point determination method for multicarrier communication systems
    24.
    发明授权
    Section division operating point determination method for multicarrier communication systems 有权
    多载波通信系统的分段工作点确定方法

    公开(公告)号:US06400773B1

    公开(公告)日:2002-06-04

    申请号:US09326246

    申请日:1999-06-04

    IPC分类号: H04L2728

    CPC分类号: H04L27/2608

    摘要: Optimum bit rates and power levels are determined for subchannels in multicarrier communication systems. A tangent of the rate-power curve has a slope &lgr;. The slope is defined by the quotient difference between high/low power and high/low rate. A particular &lgr; is evaluated to find its corresponding total power followed by an update of &lgr;, in the form of an increase or decrease, to get closer to the optimal solution. Each &lgr; is evaluated to find the optimal operating point for each subchannel on the rate-power curve by summing the power allocated to the subchannels, and comparing the result to the power budget. Look-up tables are stored for individual channels, but similarity between channels permits joint use of look-up tables by multiple channels. The tables are used to determine the rate-power characteristics at each iteration. An optimal solution is found when either a newly chosen power allocation meets the power budget exactly or a newly chosen power budget equals the high or low power of a previous iteration.

    摘要翻译: 为多载波通信系统中的子信道确定最佳比特率和功率电平。 速率 - 功率曲线的切线具有斜率lambd。 斜率由高/低功率和高/低速率之间的商差定义。 评估特定的羔羊以找到其对应的总功率,然后以增加或减少的形式更新羔羊以更接近最优解。 评估每个羔羊通过对分配给子信道的功率进行求和并将结果与​​功率预算进行比较,来找出速率 - 功率曲线上每个子信道的最佳工作点。 为单个通道存储查找表,但是通道之间的相似性允许通过多个通道联合使用查找表。 这些表用于确定每次迭代时的速率 - 功率特性。 当新选择的功率分配恰好满足功率预算或新选择的功率预算等于先前迭代的高功率或低功率时,可以找到最佳解决方案。