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    Video signature based on image hashing and shot detection
    13.
    发明授权
    Video signature based on image hashing and shot detection 有权
    基于图像散列和镜头检测的视频签名

    公开(公告)号：US08837769B2

    公开(公告)日：2014-09-16

    申请号：US13098042

    申请日：2011-04-29

    Applicant: Lei Yang ,  Qian Chen ,  Jun Tian ,  Dapeng Oliver Wu ,  Hong Heather Yu

    Inventor： Lei Yang ,  Qian Chen ,  Jun Tian ,  Dapeng Oliver Wu ,  Hong Heather Yu

    IPC: G06K9/00 ,  G06K9/62 ,  G06F17/30

    CPC classification number: G06F17/30799 ,  G06K9/00744

    Abstract: In accordance with an embodiment, a method of comparing a first group of frames to a second group of frames includes electronically receiving the first group of frames, selecting a group of frames from the first group of frames as a first key frame set, calculating a hash distance between an image hash for each frame in the first key frame set to an image hash of each frame of a second key frame set taken from second group of frames, and choosing frames in the first group of frames with a minimum hash distances to respective reference frames to form a series of minimum hash distances.

    Abstract translation: 根据实施例，将第一组帧与第二组帧进行比较的方法包括电子地接收第一组帧，从第一组帧中选择一组帧作为第一关键帧集合，计算一个 第一关键帧中的每帧的图像散列之间的散列距离设置为从第二组帧取得的第二关键帧集合的每个帧的图像散列，并且选择具有最小散列距离的第一组帧中的帧 相应的参考帧以形成一系列最小散列距离。

    System and method for content protection in a content delivery network
    15.
    发明授权
    System and method for content protection in a content delivery network 有权
    内容传送网络内容保护的系统和方法

    公开(公告)号：US08731236B2

    公开(公告)日：2014-05-20

    申请号：US13340908

    申请日：2011-12-30

    Applicant: Zhu Li ,  Jun Tian ,  Hong Heather Yu

    Inventor： Zhu Li ,  Jun Tian ,  Hong Heather Yu

    IPC: G06K9/00 ,  H04N1/40 ,  B42D15/00 ,  G09C3/00 ,  H04L9/32

    CPC classification number: G06K9/00744

    Abstract: An embodiment of an apparatus to authenticate a sequence of video frames includes a process to choose intra-frames of the sequence and sample DC components thereof to produce a set of test fingerprints. To reduce a dimensionality of the test fingerprints, the DC components of the chosen intra-frames are multiplied by a projection matrix formed of eigenvectors associated with the larger eigenvalues of a covariance matrix for a library of frames. The projected test fingerprints are compared against a reference set of fingerprints for authentication. Time-stamp spacings of the chosen intra-frames are determined, and these spacings are employed to select candidate frames for authentication in the reference set of fingerprints.

    Abstract translation: 用于认证视频帧序列的装置的实施例包括选择序列的帧内和其DC样本的处理，以产生一组测试指纹。 为了降低测试指纹的维度，将所选择的帧内的DC分量乘以由与帧库相关的协方差矩阵的较大特征值相关联的特征向量形成的投影矩阵。 将投影的测试指纹与用于认证的参考指纹集进行比较。 确定所选择的帧内的时间间隔，并且采用这些间隔来选择参考指纹集中的认证候选帧。

    Compressive sampling for multimedia coding
    16.
    发明授权
    Compressive sampling for multimedia coding 有权
    多媒体编码的压缩采样

    公开(公告)号：US08553994B2

    公开(公告)日：2013-10-08

    申请号：US12358077

    申请日：2009-01-22

    Applicant: Jun Tian ,  Dong Cao ,  Hong Heather Yu

    Inventor： Jun Tian ,  Dong Cao ,  Hong Heather Yu

    IPC: G06K9/36 ,  G06K9/46

    CPC classification number: H04N19/18 ,  H04N19/12 ,  H04N19/124 ,  H04N19/132 ,  H04N19/60 ,  H04N19/91

    Abstract: An apparatus comprising a decorrelator, a compressive sampler coupled to the decorrelator, and an encoder coupled to the compressive sampler, wherein the compressive sampler is configured to receive sparse data and compress the sparse data using compressive sampling. Also included is a network component comprising at least one processor configured to implement a method comprising decorrelating sparse data or data including sparse data, compressing the sparse data using compressive sampling, and encoding the data. Also included is a method comprising receiving a data stream comprising a sparse data portion, compressing the sparse data portion using compressive sampling, and compressing the remaining data portion without using compressive sampling.

    Abstract translation: 一种包括去相关器，耦合到去相关器的压缩采样器和耦合到压缩采样器的编码器的装置，其中压缩采样器被配置为接收稀疏数据并使用压缩采样来压缩稀疏数据。 还包括网络组件，其包括至少一个处理器，其被配置为实现包括使稀疏数据解复用的稀疏数据或包括稀疏数据的数据，使用压缩采样来压缩稀疏数据以及对数据进行编码的方法。 还包括一种方法，包括接收包括稀疏数据部分的数据流，使用压缩采样压缩稀疏数据部分，并且在不使用压缩采样的情况下压缩剩余的数据部分。

    System and Method for Transmission Control Protocol Slow-Start
    17.
    发明申请
    System and Method for Transmission Control Protocol Slow-Start 有权
    传输控制协议慢启动的系统和方法

    公开(公告)号：US20130044598A1

    公开(公告)日：2013-02-21

    申请号：US13340354

    申请日：2011-12-29

    Applicant: Yan Zhang ,  Nirwan Ansari ,  Mingquan Wu ,  Hong Heather Yu

    Inventor： Yan Zhang ,  Nirwan Ansari ,  Mingquan Wu ,  Hong Heather Yu

    IPC: H04L12/26 ,  H04L12/24

    CPC classification number: H04L43/0882 ,  H04L43/16 ,  H04L47/193 ,  H04L47/27 ,  H04L47/283 ,  H04L47/29

    Abstract: An embodiment of a system and method that uses inline measurements to probe available bandwidth for a transmission control protocol, and adaptively sets a slow-start threshold according to the available bandwidth. The method includes initializing a congestion window “cwnd,” sending cwnd packets, estimating an available bandwidth for the cwnd packets. The congestion window cwnd is set to a higher number, and the higher number of further packets is sent if the available bandwidth is greater than a first threshold level. The available bandwidth is re-estimated for the higher number of the further packets, and a soft start threshold “ssthresh” is set to the re-estimated available bandwidth. A statistical measure is calculated for the re-estimated available bandwidth, and the congestion window cwnd is set equal to ssthresh if a ratio of the statistical measure to the re-estimated available bandwidth is less than a second threshold level.

    Abstract translation: 使用在线测量来探测传输控制协议的可用带宽的系统和方法的实施例，并且根据可用带宽自适应地设置慢启动阈值。 该方法包括初始化拥塞窗口cwnd，发送cwnd分组，估计cwnd分组的可用带宽。 拥塞窗口cwnd被设置为更高的数量，并且如果可用带宽大于第一阈值水平，则发送更多数量的另外的分组。 对于更多数量的其他分组重新估计可用带宽，并且将软启动阈值ssthresh设置为重新估计的可用带宽。 对于重新估计的可用带宽计算统计度量，并且如果统计度量与重新估计的可用带宽的比率小于第二阈值水平，则将拥塞窗口cwnd设置为等于ssthresh。

    Compressed Domain Video Watermarking
    18.
    发明申请
    Compressed Domain Video Watermarking 有权
    压缩域视频水印

    公开(公告)号：US20120076206A1

    公开(公告)日：2012-03-29

    申请号：US13198371

    申请日：2011-08-04

    Applicant: Jingteng Xue ,  Jun Tian ,  Hong Heather Yu

    Inventor： Jingteng Xue ,  Jun Tian ,  Hong Heather Yu

    IPC: H04N7/32 ,  H04N7/24 ,  H04N7/26

    CPC classification number: H04N19/00781 ,  H04N19/48 ,  H04N19/61

    Abstract: In accordance with an embodiment, a method of watermarking encoded video frames includes electronically receiving a bitstream comprising a plurality of encoded video frames that are divided into a plurality of macro-blocks, determining macro-block dependencies based on prediction information in the received bitstream, determining a set of macro-blocks having a minimal number of macro-block dependencies, and embedding a watermark in a plurality of macro-blocks selected from the set of macro-blocks having the minimal number of macro-block dependencies.

    Abstract translation: 根据实施例，一种对编码视频帧进行水印处理的方法包括电子地接收包含被划分成多个宏块的多个编码视频帧的比特流，基于接收的比特流中的预测信息确定宏块依赖性， 确定具有最小数量的宏块相关性的一组宏块，以及将水印嵌入从具有最少数量的宏块依赖性的宏组中选择的多个宏块中。

    Combined Binary String for Signaling Byte Range of Media Fragments in Adaptive Streaming
    19.
    发明申请
    Combined Binary String for Signaling Byte Range of Media Fragments in Adaptive Streaming 有权
    用于自适应流中媒体片段的信令字节范围的组合二进制字符串

    公开(公告)号：US20110196981A1

    公开(公告)日：2011-08-11

    申请号：US13015237

    申请日：2011-01-27

    Applicant: Hongbing Li ,  Ye-Kui Wang ,  Peng Zhang ,  Yunchao Gao ,  Hong Heather Yu

    Inventor： Hongbing Li ,  Ye-Kui Wang ,  Peng Zhang ,  Yunchao Gao ,  Hong Heather Yu

    IPC: G06F15/16

    CPC classification number: H04L65/607 ,  H04L65/60 ,  H04L65/608 ,  H04L65/80

    Abstract: A system and method for providing media streaming are provided. A media description file having a range string indicator is used to specify location offsets of a plurality of media fragments within a media file. The range string may be stored directly in the media description file or the media description file may contain an indicator specifying a file containing the range string. The media description file may also include a range unit specifying the size of the offsets in the range string. In an embodiment, offsets within the individual media fragments may also be provided, either in the media description file or in a different file.

    Abstract translation: 提供了一种用于提供媒体流的系统和方法。 使用具有范围字符串指示符的媒体描述文件来指定媒体文件中的多个媒体片段的位置偏移。 范围字符串可以直接存储在媒体描述文件中，或者媒体描述文件可以包含指定包含范围字符串的文件的指示符。 媒体描述文件还可以包括指定范围串中的偏移的大小的范围单位。 在一个实施例中，也可以在媒体描述文件中或不同的文件中提供各个媒体片段内的偏移。

    Media Processing Devices With Joint Encryption-Compression, Joint Decryption-Decompression, And Methods Thereof
    20.
    发明申请
    Media Processing Devices With Joint Encryption-Compression, Joint Decryption-Decompression, And Methods Thereof 审中-公开
    具有联合加密压缩，联合解密 - 解压缩及其方法的媒体处理设备

    公开(公告)号：US20110191587A1

    公开(公告)日：2011-08-04

    申请号：US13015308

    申请日：2011-01-27

    Applicant: Jun Tian ,  Hong Heather Yu

    Inventor： Jun Tian ,  Hong Heather Yu

    IPC: H04L9/32

    CPC classification number: H04L9/32

    Abstract: In one embodiment, a method of adaptive media streaming includes receiving a cipher media stream at a media device. The cipher media stream is compliant with a media compression standard. The cipher media stream is decrypted and decoded using an inverse stream cipher algorithm and a compressed media stream is generated by combining the cipher media stream with a keystream.

    Abstract translation: 在一个实施例中，自适应媒体流的方法包括在媒体设备处接收加密媒体流。 密码媒体流符合媒体压缩标准。 使用逆流密码算法对密码媒体流进行解密和解码，并通过将密码媒体流与密钥流组合来生成压缩媒体流。

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