Motion-compensated spatio-temporal wavelet compression of video data with optimised permutation of the frames
    1.
    发明公开
    Motion-compensated spatio-temporal wavelet compression of video data with optimised permutation of the frames 审中-公开
    视频数据的运动补偿时空小波压缩与所述帧的优化排列

    公开(公告)号:EP1575299A1

    公开(公告)日:2005-09-14

    申请号:EP04290692.5

    申请日:2004-03-12

    IPC分类号: H04N7/26

    摘要: In video encoding, the video frames are spatio-temporally filtered for reduction of spatial and temporal redundancy before they are entropy encoded. Known filtering schemes consider temporally successive frames and are static. It is probable but not necessary that successive frames are most efficient to encode. Therefore, a plurality or all possible frame order permutations are considered for a group of frames (GOP) and evaluated based on a global criterion, which is the sum of local criterion values computed over disjoint sets of successive frames considered in the new order. The local criterion value is deduced from motion estimation processed on each considered set of frames. The best ordering is chosen as the one that minimizes the global criterion value.

    摘要翻译: 在视频编码中,视频帧是空间 - 时间滤波用于减少空间和时间冗余的之前它们是熵编码。 已知的过滤方案考虑时间上连续的帧,是静态的。 这是可能的,但没有必要做连续帧是最有效的编码。 因此,多个或所有可能的帧顺序排列被认为是一组基于全局基准帧(GOP)和评估的,所有这一切是上计算不相交的集合中的新的顺序考虑连续帧的本地标准值的总和。 本地基准值是根据对每个所考虑的帧集合的处理的运动估计推导出。 作为一个做了最大限度地减少全球标准值选择最好的排序。

    Differential video coding method
    2.
    发明公开
    Differential video coding method 有权
    Differentielles Videokodierungsverfahren

    公开(公告)号:EP1521477A1

    公开(公告)日:2005-04-06

    申请号:EP04104541.0

    申请日:2004-09-20

    IPC分类号: H04N7/46 H04N7/26 H04N7/50

    摘要: The process for coding the current block comprises a step of selecting the predicted block (2) from among candidate blocks, the selection being dependent on a difference D B drx,dry between the co-located block of the current image block lying in an image of type B and the block of a reference image, the latter block being designated by the motion vector with components drx, dry which is allocated to the co-located block and which is colinear with the motion vector Vp allocated to the current block and designating the candidate block.
    Applications relate to data compression, the transmission of digital images using the video coding standard comprising a direct prediction mode, for example the h263, MPEG4 or h261 standard.

    摘要翻译: 用于对当前块进行编码的过程包括从候选块中选择预测块(2)的步骤,该选择取决于位于当前图像块的同位置块之间的差D drx 类型B的图像和参考图像的块,后一块由具有分配给共址的块的分量drx的运动矢量指定,并且与分配给当前块的运动矢量Vp并联 并指定候选块。 应用涉及数据压缩,使用包括直接预测模式的视频编码标准(例如h263,MPEG4或h261标准)传输数字图像。

    Blockwise MPEG coding process with different block resolution
    3.
    发明公开
    Blockwise MPEG coding process with different block resolution 有权
    Blockweise MPEG-Kodierung mit unterchiedlicherBlockauflösung

    公开(公告)号:EP1241895A1

    公开(公告)日:2002-09-18

    申请号:EP02290404.9

    申请日:2002-02-20

    IPC分类号: H04N7/30

    摘要: The invention relates to a process for coding images transmitted according to the so-called multiresolution technique. According to this process, a step of pixel level processing of so-called mixed blocks of pixels, that is to say those shared between at least one zone of a first resolution and at least one zone of a second resolution, is performed.
    A block is thus transmitted, the pixels of whose zone of the first resolution are assigned this first resolution and the pixels of whose zone of second resolution are assigned this second resolution.

    摘要翻译: 本发明涉及一种用于编码根据所谓的多分辨率技术传输的图像的方法。 根据该处理,执行所谓的混合像素块的像素级处理的步骤,也就是说,在第一分辨率的至少一个区域和至少一个第二分辨率区域之间共享的像素级处理。 因此传输块,将其第一分辨率的区域的像素分配给该第一分辨率,并且将其第二分辨率的区域的像素分配给该第二分辨率。

    Scalable encoding and decoding of interlaced digital video data
    4.
    发明公开
    Scalable encoding and decoding of interlaced digital video data 审中-公开
    Skalierbare Kodierung und Dekodierung von digitalen Zeilensprungvideosignalen

    公开(公告)号:EP1455534A1

    公开(公告)日:2004-09-08

    申请号:EP03290507.7

    申请日:2003-03-03

    IPC分类号: H04N7/26 H04N7/46

    摘要: A method for encoding an interlaced sequence of digital video data decomposes the interlaced video sequence (I) into first (F1) and second (F2) fields, performs digital filtering (SF1) to get lower frequency (L) and higher frequency (H) component signals of the first fields (F1), and uses spatio-temporal filtering (STF) and motion estimation (ME1) for generating base layer signals (P, MV1) being suitable for reconstruction of a progressive mode video sequence (V1,V2) in a receiver. Advantageously, both the spatio-temporal filter (STF) at the encoder, and the inverse process (STS) at the receiver, can perform scaling in spatial and temporal dimension. The second fields (F2) are used to generate enhancement signals (FF2, MV2), which enable a receiver to reproduce an interlaced video sequence of the full, or scaled, spatial and/or temporal resolution.

    摘要翻译: 用于编码数字视频数据的隔行序列的方法将隔行视频序列(I)分解为第一(F1)和第二(F2)场,执行数字滤波(SF1)以获得较低频率(L)和较高频率(H) (F1)的分量信号,并且使用时空滤波(STF)和运动估计(ME1)来生成适于重构逐行模式视频序列(V1,V2)的基本层信号(P,MV1) 在接收器中。 有利的是,编码器处的时空滤波器(STF)和接收器处的逆处理(STS)都可以执行空间和时间维度的缩放。 第二场(F2)用于产生增强信号(FF2,MV2),这使得接收机能够再现完整或缩放的空间和/或时间分辨率的隔行视频序列。

    Device and method for simulating movement in a virtual scene
    6.
    发明公开
    Device and method for simulating movement in a virtual scene 审中-公开
    Vorrichtung und Verfahren zur Simulation der Bewegung in einer virtuellen Szene

    公开(公告)号:EP1496476A1

    公开(公告)日:2005-01-12

    申请号:EP04102739.2

    申请日:2004-06-16

    IPC分类号: G06T15/20

    摘要: The invention relates to a device for coding two-dimensional images representing viewpoints of a three-dimensional virtual scene, a movement in this scene, simulated by the successive displaying of images, being limited according to predetermined trajectories.
    In accordance with the invention, the device is characterized in that it comprises means for coding a trajectory with the aid of a graph (300) of successive nodes N i such that with each node N i is associated at least one two-dimensional source and one transformation of this image.

    摘要翻译: 本发明涉及一种用于编码表示三维虚拟场景的二维图像的装置,该场景中由根据预定轨迹限制的图像的连续显示而模拟的运动。 根据本发明,该装置的特征在于,其包括借助于连续节点Ni的曲线图(300)对轨迹进行编码的装置,使得每个节点Ni与至少一个二维 来源和这个图像的一个转换。

    Device and method for inserting error correcting codes and for reconstructing data streams
    7.
    发明公开
    Device and method for inserting error correcting codes and for reconstructing data streams 审中-公开
    的装置和方法的纠错码插入和用于建立数据流的

    公开(公告)号:EP1345334A1

    公开(公告)日:2003-09-17

    申请号:EP03290553.1

    申请日:2003-03-07

    IPC分类号: H03M13/35

    摘要: The present invention relates to a device (1) for inserting error correcting codes into data streams (11) intended to be sent in packets in a network (8), a device (9) for reconstructing data streams (13), and corresponding methods and products.
    The insertion device comprises a unit (3) for identifying resynchronization indicators dispersed in the data streams and a unit (4) for determining successive segments in these streams, the segments forming partitions of the data lying between two consecutive resynchronization indicators. It also comprises a unit (6) for allocating a set of error correcting codes to each of these segments, these sets of codes having decreasing sizes between any two of the consecutive resynchronization indicators. Preferably, the device also comprises a data interleaving unit (7).

    摘要翻译: 本发明涉及一种装置(1),用于重构的数据流(13)(9)在网络中插入纠错意在报文发送时码插入数据流(11)(8),一个装置,以及相应的方法 和产品。 所述的插入装置包括用于识别分散在数据流的再同步指示的单元(3)和(4)用于确定性采矿连续段在合成流的单元中,形成数据的两个连续的重新同步指示符之间躺在的分区的段。 因此,它包括一个单元(6)的一组的纠错码分配给每一个段论文,论文集具有的连续再同步指标任意两个之间的尺寸减小码的。 优选地,该装置因此包括一个数据的交织单元(7)。