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90 条记录 (耗时 0.026 秒)

    Apparatus and method for performing scalable hierarchical motion estimation
    81.
    发明授权
    Apparatus and method for performing scalable hierarchical motion estimation 失效
    用于执行可分级运动估计的装置和方法

    公开(公告)号：US06208692B1

    公开(公告)日：2001-03-27

    申请号：US09106706

    申请日：1998-06-29

    申请人： Xudong Song ,  Tihao Chiang ,  Ya-Qin Zhang ,  Ravi Krishnamurthy

    发明人： Xudong Song ,  Tihao Chiang ,  Ya-Qin Zhang ,  Ravi Krishnamurthy

    IPC分类号： H04N718

    CPC分类号： H04N19/53 ,  H04N19/56 ,  H04N19/63

    摘要： An apparatus and a concomitant method for performing hierarchial block-based motion estimation with a high degree of scalability is disclosed. The present invention decomposes each of the image frames within an image sequence into an M-ary pyramid. Different dynamic ranges for representing the pixel values are used for different levels of the M-ary pyramid, thereby generating a plurality of different “P-bit” levels, i.e., a plurality of different M-ary pyramid architectures. The present scalable hierarchical motion estimation provides the flexibility of switching from one M-ary pyramid architecture to another M-ary pyramid architecture according to the available platform resources and/or user's choice.

    摘要翻译： 公开了一种用于以高度可扩展性执行基于层次的基于块的运动估计的装置和并发方法。 本发明将图像序列中的每个图像帧分解成M字节金字塔。 用于表示像素值的不同动态范围用于不同级别的金字塔，从而产生多个不同的“P位”电平，即，多个不同的M元金字塔架构。 本发明的可分级运动估计提供了根据可用平台资源和/或用户的选择从一个M元金字塔架构切换到另一个M元金字塔架构的灵活性。

    Variable-block size multi-resolution motion estimation scheme for pyramid coding
    84.
    发明授权
    Variable-block size multi-resolution motion estimation scheme for pyramid coding 失效
    用于金字塔编码的可变块大小多分辨率运动估计方案

    公开(公告)号：US5477272A

    公开(公告)日：1995-12-19

    申请号：US96148

    申请日：1993-07-22

    申请人： Ya-Qin Zhang ,  Sohail Zafar

    发明人： Ya-Qin Zhang ,  Sohail Zafar

    IPC分类号： G06T7/20 ,  H04N7/26 ,  H04N7/36 ,  H04N7/30

    CPC分类号： G06T7/202 ,  H04N19/186 ,  H04N19/523 ,  H04N19/53 ,  H04N19/61 ,  H04N19/63

    摘要： A novel variable-size block multi-resolution motion estimation (MRME) scheme is presented. The motion estimation scheme can be used to estimate motion vectors in subband coding, wavelet coding and other pyramid coding systems for video compression. In the MRME scheme, the motion vectors in the highest layer of the pyramid are first estimated, then these motion vectors are used as the initial estimate for the next layer and gradually refined. A variable block size is used to adapt to its level in the pyramid. This scheme not only considerably reduces the searching and matching time but also provides a meaningful characterization of the intrinsic motion structure. In addition, the variable-MRME approach avoids the drawback of the constant-size MRME in describing small object motion activities. The proposed variable-block size MRME scheme can be used in estimating motion vectors for different video source formats and resolutions including video telephone, NTSC/PAL/SECAM, and HDTV applications.

    摘要翻译： 提出了一种新颖的可变大小块多分辨率运动估计（MRME）方案。 运动估计方案可用于估计子带编码，小波编码和视频压缩的其他金字塔编码系统中的运动矢量。 在MRME方案中，首先估计金字塔最高层的运动矢量，然后将这些运动矢量用作下一层的初始估计值并逐渐改进。 可变块大小用于适应其金字塔中的级别。 该方案不仅大大减少了搜索和匹配时间，而且还提供了内在运动结构的有意义的表征。 此外，可变MRME方法避免了定尺寸MRME描述小物体运动活动的缺点。 提出的可变块大小MRME方案可用于估计不同视频源格式和分辨率的运动矢量，包括视频电话，NTSC / PAL / SECAM和HDTV应用。

    Robust, inferentially synchronized transmission of compressed transport-layer-protocol headers
    85.
    发明授权
    Robust, inferentially synchronized transmission of compressed transport-layer-protocol headers 有权

    公开(公告)号：US07558244B2

    公开(公告)日：2009-07-07

    申请号：US11082496

    申请日：2005-03-17

    申请人： HongBin Liao ,  Qian Zhang ,  Wenwu Zhu ,  Ya-Qin Zhang

    发明人： HongBin Liao ,  Qian Zhang ,  Wenwu Zhu ,  Ya-Qin Zhang

    IPC分类号： H04J3/06

    CPC分类号： H04L69/04 ,  H04L47/10 ,  H04L47/193 ,  H04L47/27 ,  H04L47/37 ,  H04L69/16 ,  H04L69/161 ,  H04L69/163 ,  H04L69/22 ,  H04L69/326

    摘要： An implementation of a technology, described herein, for transmitting compressed network transport-layer-protocol headers in a speedy, efficient, inferentially synchronized, and robust manner. An implementation, described herein, models the transmission of compressed headers to the congestion procedure of the network transport-layer protocol (e.g., TCP's). Doing so, the sender of the compressed headers can infer whether the receiver correctly received them. Unlike the slow direct synchronization employed by conventional schemes, this implementation of the present claimed invention inferentially synchronizes by modeling after the congestion procedure of the network transport-layer protocol. This is inherently faster than direct synchronization. Since the implementation performs well over both noiseless and noisy links, it is particularly suited to use over wireless communications channels. This abstract itself is not intended to limit the scope of this patent. The scope of the present invention is pointed out in the appending claims.