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    Video Codec With Weighted Prediction Utilizing Local Brightness Variation
    141.
    发明申请
    Video Codec With Weighted Prediction Utilizing Local Brightness Variation 有权
    具有加权预测的视频编解码器利用局部亮度变化

    公开(公告)号：US20080253456A1

    公开(公告)日：2008-10-16

    申请号：US11662903

    申请日：2005-09-14

    申请人： Peng Yin ,  Jill MacDonald Boyce ,  Alexandros Tourapis

    发明人： Peng Yin ,  Jill MacDonald Boyce ,  Alexandros Tourapis

    IPC分类号： H04N7/32

    CPC分类号： H04N19/189 ,  H04N19/105 ,  H04N19/172 ,  H04N19/176 ,  H04N19/46 ,  H04N19/61

    摘要： There are provided video encoders, video decoders, and corresponding encoding and decoding methods for video data for a picture, wherein the video data has local brightness variation. The video encoder includes an encoder for inter-coding the video data using a localized weighted function to determine weights for the local brightness variation. The weights for the localized weighted function are derived without explicit coding.

    摘要翻译： 提供视频编码器，视频解码器以及用于图像的视频数据的相应编码和解码方法，其中视频数据具有局部亮度变化。 视频编码器包括编码器，用于使用局部加权函数对视频数据进行帧间编码，以确定局部亮度变化的权重。 本地加权函数的权重是没有明确编码的。

    Encoder with adaptive rate control for h.264
    142.
    发明申请
    Encoder with adaptive rate control for h.264 有权
    编码器，适用于h.264的自适应速率控制

    公开(公告)号：US20070153892A1

    公开(公告)日：2007-07-05

    申请号：US10586123

    申请日：2005-01-11

    申请人： Peng Yin ,  Jill Boyce

    发明人： Peng Yin ,  Jill Boyce

    IPC分类号： H04N11/04 ,  H04N7/12

    CPC分类号： H04N19/19 ,  H04N19/124 ,  H04N19/132 ,  H04N19/147 ,  H04N19/15 ,  H04N19/152 ,  H04N19/172 ,  H04N19/176 ,  H04N19/61

    摘要： A video encoder is disclosed, the encoder for encoding image frames that are divisible into macroblocks. The video encoder includes means for generating a QP estimate for the macroblocks of an image frame. The video encoder further includes means for selection of a frame level quantization parameter (QP) for the image frame, using one of mean, median, and mode of QP estimates for the macroblocks. A method for encoding video is disclosed for encoding image frames that are divisible into macroblocks. The method generates a quantization parameter (QP) estimate for the macroblocks of an image frame and selects a frame level QP for the image frame, using one of mean, median, and mode of QP estimates for the macroblocks.

    摘要翻译： 公开了一种视频编码器，用于对可分为宏块的图像帧进行编码的编码器。 视频编码器包括用于为图像帧的宏块生成QP估计的装置。 视频编码器还包括使用宏块的QP估计的平均值，中值和模式之一来选择图像帧的帧级量化参数（QP）的装置。 公开了一种用于编码视频的方法，用于对可被划分为宏块的图像帧进行编码。 该方法使用图像帧的宏块的量化参数（QP）估计，并且使用宏块的QP估计的均值，中值和模式之一来选择图像帧的帧级QP。

    Method and apparatus for encoding hybrid intra-inter coded blocks
    143.
    发明申请
    Method and apparatus for encoding hybrid intra-inter coded blocks 有权
    混合帧内编码块的编码方法和装置

    公开(公告)号：US20070047648A1

    公开(公告)日：2007-03-01

    申请号：US10569236

    申请日：2004-08-24

    申请人： Alexandros Tourapis ,  Jill Boyce ,  Peng Yin

    发明人： Alexandros Tourapis ,  Jill Boyce ,  Peng Yin

    IPC分类号： H04N11/04

    CPC分类号： H04N19/577 ,  H04N19/107 ,  H04N19/109 ,  H04N19/11 ,  H04N19/119 ,  H04N19/136 ,  H04N19/17 ,  H04N19/174 ,  H04N19/176 ,  H04N19/44 ,  H04N19/593 ,  H04N19/61 ,  H04N19/70 ,  H04N19/82 ,  H04N19/86 ,  H04N19/895

    摘要： A hybrid intra-inter bi-predictive (or multi-predictive) coding mode allows both intraframe (intra) and interframe (inter) predictions to be combined together for hybrid-encoding a current macroblock or a subblock Bi-prediction may be used also in I-pictures, combining two intra predictions that use two different intra prediction directions. A video encoder processes data representing a two-dimensional video image which has been produced by a conventional commercially available video camera. The video encoder is adapted to select, for coding a current macroblock, between an intra encoding mode, an P-frame inter encoding mode, a B-frame bi-predictive inter mode, and a hybrid intra-inter bi-predictive encoding mode. A video decoder (800) receives and decodes a data stream that may contain a block/macroblock encoded in accordance with the hybrid intra-inter bi-predictive encoding mode.

    摘要翻译： 混合帧内双向预测（或多预测）编码模式允许将帧内（帧内）和帧间（帧间）预测组合在一起用于混合编码当前宏块或子块双预测也可以用于 I图像，组合使用两个不同的帧内预测方向的两个帧内预测。 视频编码器处理表示由传统市售摄像机产生的二维视频图像的数据。 视频编码器适于在帧内编码模式，P帧编码模式，B帧双预测帧间模式和混合帧内双向预测编码模式之间选择用于对当前宏块进行编码。 视频解码器（800）接收并解码可以包含根据混合帧内双向预测编码模式编码的块/宏块的数据流。

    Video transcoder with spatial resolution reduction and drift compensation
    144.
    发明授权
    Video transcoder with spatial resolution reduction and drift compensation 有权
    具有空间分辨率降低和漂移补偿的视频转码器

    公开(公告)号：US07170932B2

    公开(公告)日：2007-01-30

    申请号：US10046366

    申请日：2002-01-14

    申请人： Anthony Vetro ,  Huifang Sun ,  Peng Yin ,  Bede Liu

    发明人： Anthony Vetro ,  Huifang Sun ,  Peng Yin ,  Bede Liu

    IPC分类号： H04B1/66

    CPC分类号： G06T3/4084 ,  H04N19/40 ,  H04N19/48 ,  H04N19/90

    摘要： A method and system reduces the spatial resolution of a compressed bitstream of a sequence of frames of a video signal by first decoding the frames, and storing the decoded frames in a first frame buffer. While performing the decoding, motion compensating is performed with full resolution motion vectors of the stored decoded frames. The decoded frames are then down-sampled to a reduced resolution, and stored in a second frame buffer. The reduced resolution frames are partially encoded to produce a reduced resolution compressed bitstream of the video. While performing the partial encoding, motion compensation is performed with reduced resolution motion vectors of the stored reduced resolution frames.

    摘要翻译： 一种方法和系统通过首先对帧进行解码并将解码的帧存储在第一帧缓冲器中来降低视频信号的帧序列的压缩比特流的空间分辨率。 在执行解码时，利用所存储的解码帧的全分辨率运动矢量来执行运动补偿。 然后将经解码的帧进行下采样以降低分辨率，并存储在第二帧缓冲器中。 缩小分辨率帧被部分编码以产生视频的降低分辨率的压缩比特流。 在执行部分编码的同时，利用所存储的分辨率降低的帧的分辨率降低的运动矢量执行运动补偿。

    Semi-fragile watermarking system for MPEG video authentication
    145.
    发明授权
    Semi-fragile watermarking system for MPEG video authentication 失效

    公开(公告)号：US06996717B2

    公开(公告)日：2006-02-07

    申请号：US09865158

    申请日：2001-05-24

    申请人： Peng Yin ,  Hong Heather Yu

    发明人： Peng Yin ,  Hong Heather Yu

    IPC分类号： G06F17/00

    CPC分类号： H04N1/32299 ,  H04N19/467 ,  H04N2201/3236 ,  H04N2201/3239 ,  H04N2201/3281

    摘要： The semi-fragile watermark comprises a fragile watermark component and a robust watermark component. Features are extracted from the video stream and subsequent hashing and encryption processes are performed to generate the fragile watermark. The fragile watermark includes control data information at the block level as well as frame and group level information. The fragile watermark is added on top of the robust watermark, giving the system the ability to detect alteration at the block level as well as the group level. The resulting semi-fragile watermark has the advantage of being both sensitive to malicious attack while being robust enough to survive bit rate reduction and other types of manipulation typically performed on digital multimedia signals.

    Device selection by a disk adapter scheduler
    146.
    发明授权
    Device selection by a disk adapter scheduler 有权
    磁盘适配器调度程序进行设备选择

    公开(公告)号：US06904470B1

    公开(公告)日：2005-06-07

    申请号：US10397403

    申请日：2003-03-26

    申请人： Adi Ofer ,  William P. Powers, Jr. ,  Gilad Sade ,  Amit Kumar ,  Stephen R. Ives ,  Ran Margalit ,  Daniel E. Rabinovich ,  Peng Yin

    发明人： Adi Ofer ,  William P. Powers, Jr. ,  Gilad Sade ,  Amit Kumar ,  Stephen R. Ives ,  Ran Margalit ,  Daniel E. Rabinovich ,  Peng Yin

    IPC分类号： G06F3/06 ,  G06F13/00

    CPC分类号： G06F3/0659 ,  G06F3/061 ,  G06F3/0689 ,  G06F11/2056

    摘要： A scheduler for selecting a logical volume for scheduling pending I/O tasks for job generation. The scheduler includes a main scheduler that selects from among multiple sub-schedulers that operate according to different scheduling approaches, e.g., high priority read I/O request scheduling, urgency of non-read I/O tasks, as well as load balancing and round robin schemes. In selecting a sub-scheduler, the main scheduler considers the amount of time allocated to performing read I/O requests, as well as the level of urgency associated with the logical volumes and the disk adapter that manages those logical volumes for non-read I/O tasks.

    摘要翻译： 用于选择用于调度用于作业生成的等待的I / O任务的逻辑卷的调度器。 调度器包括主调度器，其从根据不同调度方式操作的多个子调度器中进行选择，例如，高优先级读I / O请求调度，非读I / O任务的紧急性以及负载平衡和圆 知识产权计划。 在选择子调度器时，主调度器考虑分配用于执行读I / O请求的时间量以及与逻辑卷相关联的紧急程度以及管理用于非读I的逻辑卷的磁盘适配器 / O任务。

    Modifying a coded bitstream
    149.
    发明授权
    Modifying a coded bitstream 有权

    公开(公告)号：US09299120B2

    公开(公告)日：2016-03-29

    申请号：US12450343

    申请日：2007-11-02

    申请人： Dekun Zou ,  Jeffrey Adam Bloom ,  Peng Yin ,  Oscar Divorra Escoda

    发明人： Dekun Zou ,  Jeffrey Adam Bloom ,  Peng Yin ,  Oscar Divorra Escoda

    IPC分类号： G06F17/30 ,  G06T1/00 ,  H04N19/70 ,  H04N19/13 ,  H04N19/48 ,  H04N19/467

    CPC分类号： G06T1/0035 ,  G06T2201/0053 ,  H04N19/13 ,  H04N19/467 ,  H04N19/48 ,  H04N19/70

    摘要： Implementations may relate to various aspects of modifying, or using, a coded bitstream, or to recovering watermarking information from data. In one implementation, a coded bitstream is modified to allow for the application of a watermark to the coded bitstream without changing the coding of any other syntax elements in the bitstream. This is performed by identifying conditions necessary to change a coded syntax element without disrupting the interpretation of subsequent coded elements. The coded syntax element is replaced with another coded value if the modified value generates the same decoding variables as the original value would have generated. Particular implementations focus on syntax elements coded using entropy coding, including, for example, Context-based Adaptive Binary Arithmetic Coding (CABAC). Regardless of the type of coding or watermarking, various implementations may provide for recovering watermarking information. Particular implementations recover watermarking information using detection data and feature information.