Method for coding video pictures by determining a sub-target value for the number of bits per sub-series of coefficients
    1.
    发明授权
    Method for coding video pictures by determining a sub-target value for the number of bits per sub-series of coefficients 失效
    通过确定每个子系列系数的比特数的子目标值来对视频图像进行编码的方法

    公开(公告)号:US07257159B1

    公开(公告)日:2007-08-14

    申请号:US08604698

    申请日:1996-02-21

    IPC分类号: H04N7/12

    摘要: The bitrate control of known video encoders is based on a control of the quantization step size per picture block. In transform coding of relatively large picture blocks, the video picture comprises a too small number of picture blocks to obtain a desired number of bits per picture. In conformity with the invention, the target value for the number of bits per picture block is divided into N sub-targets (Rt(k,n)). The series of coefficients of a picture block is divided into N segments (L(n)) with reference to an estimation for the cumulative distribution 20 of the bit cost per picture block. The quantization step size is subsequently adapted per segment to the corresponding sub-target. Since the number of segments is N times larger than the number of picture blocks, an accurate bitrate control is possible. If desired, the estimation for the cumulative distribution is adapted from picture to picture.

    摘要翻译: 已知视频编码器的比特率控制基于每个图像块的量化步长的控制。 在相对大的图像块的变换编码中,视频图像包括太少数量的图像块以获得每图像所需的位数。 根据本发明,每个图像块的比特数的目标值被划分为N个子目标(R t)(k,n))。 参考每个图像块的比特成本的累积分布20的估计,图像块的系列系列被分成N个段(L(n))。 随后,每个段将量化步长适应于相应的子目标。 由于段的数量比图像块的数量大N倍,因此可以进行精确的比特率控制。 如果需要,累积分布的估计是从图片到图片进行的。

    Image based 3D video format
    2.
    发明授权
    Image based 3D video format 有权
    基于图像的3D视频格式

    公开(公告)号:US08767046B2

    公开(公告)日:2014-07-01

    申请号:US13139365

    申请日:2009-12-10

    IPC分类号: H04N13/00

    摘要: The present invention relates to a method and device (580) for encoding three-dimensional video data, the device comprising: a first encoder (505) arranged to encode multiple simultaneous views (501) of a scene from different viewpoints; a second encoder (510) arranged to encode depth information of the scene and a third encoder (515) arranged to encode additional information indicative of a relationship between the multiple views and the depth information and a combiner (520) arranged to combine the encoded information into a representation (513) of the three-dimensional video data. The additional information comprises a group classifier indicating whether or not the depth information and at least one of the multiple views correspond to the same source material for, when corresponding, using the depth information and the at least one of the multiple views to render further views of the scene from further different viewpoints. The invention further related to a method and device (585) for decoding three-dimensional video data, as well as a computer program product comprising program instructions for executing a method according to the present invention.

    摘要翻译: 本发明涉及一种用于对三维视频数据进行编码的方法和装置(580),该装置包括:第一编码器(505),用于从不同的视点编码场景的多个同时视图(501); 布置成编码场景的深度信息的第二编码器(510)和被配置为编码表示多个视图和深度信息之间的关系的附加信息的第三编码器(515),以及组合器(520),其被组合以编码信息 成为三维视频数据的表示(513)。 所述附加信息包括指示深度信息是否是深度信息的组,并且所述多个视图中的至少一个视图对应于相同的源材料,当对应时,使用所述深度信息和所述至少一个所述多个视图来呈现进一步的视图 从不同的观点出发, 本发明还涉及用于解码三维视频数据的方法和设备(585),以及包括用于执行根据本发明的方法的程序指令的计算机程序产品。

    Encoding an information stream organized as a sequence of pictures
    3.
    发明授权
    Encoding an information stream organized as a sequence of pictures 失效
    编码作为一系列图片组织的信息流

    公开(公告)号:US06385243B1

    公开(公告)日:2002-05-07

    申请号:US09313600

    申请日:1999-05-18

    IPC分类号: H04N712

    摘要: An audio and/or video information stream organized as a sequence of pictures is encoded through an at least partly software-based procedure. The sequence includes Intrapictures, Predictive pictures, and Bidirectional predictive pictures. In particular, for a substantial and predictively located selection (77) among said Bidirectional predictive pictures only one prediction direction is used (76). For any remaining Bidirectional predictive picture both prediction directions are maintained.

    摘要翻译: 组织为图片序列的音频和/或视频信息流通过至少部分基于软件的过程进行编码。 该序列包括Intrapictures,Predictive图片和Bidirectional预测图片。 特别地,对于所述双向预测图像中的实质和预测位置的选择(77),仅使用一个预测方向(76)。 对于任何剩余的双向预测图像,两个预测方向都保持不变。

    Encoding block-organized data
    4.
    发明授权
    Encoding block-organized data 失效
    编码块组织的数据

    公开(公告)号:US06999515B2

    公开(公告)日:2006-02-14

    申请号:US10146399

    申请日:2002-05-16

    IPC分类号: H04B1/66

    摘要: An information stream organized as a sequence of blocks is encoded according to a graceful degradation principle. The stream poses temporal non-uniform data processing requirements. In particular, with respect to a received block one or more blockwise defined control parameters and an associated blockwise processing load are detected (44). Under control (46) of a processing load for one or more previous blocks, one or more later blocks before processing thereof get an adjustment (48) of one or more of the control parameters. This lowers an expected load for the later block in case of an excessive load, and vice versa when detecting a sub-standard load.

    摘要翻译: 根据优雅的降级原理对作为块序列组织的信息流进行编码。 流提供了时间不均匀的数据处理要求。 特别地,对于接收到的块,检测到一个或多个块状定义的控制参数和相关联的块状处理负载(44)。 在一个或多个先前块的处理负载的控制(46)下,在处理之前的一个或多个稍后的块获得一个或多个控制参数的调整(48)。 这会在过载时降低后期块的预期负载,反之亦然。

    Encoding block-organized data
    5.
    发明授权
    Encoding block-organized data 失效
    编码块组织的数据

    公开(公告)号:US06498812B1

    公开(公告)日:2002-12-24

    申请号:US09315081

    申请日:1999-05-19

    IPC分类号: H04B166

    摘要: An information stream organized as a sequence of blocks is encoded according to a graceful degradation principle. The stream poses temporal non-uniform data processing requirements. In particular, with respect to a received block one or more blockwise defined control parameters and an associated blockwise processing load are detected. Under control of a processing load for one or more previous blocks, one or more later blocks before processing thereof get an adjustment of one or more of the control parameters. This lowers an expected load for the later block in case of an excessive load, and vice versa when detecting a sub-standard load.

    摘要翻译: 根据优雅的降级原理对作为块序列组织的信息流进行编码。 流提供了时间不均匀的数据处理要求。 特别地,对于接收到的块,检测到一个或多个块定义的控制参数和相关联的块状处理负载。 在一个或多个先前块的处理负载的控制下,在处理之前的一个或多个稍后的块获得对一个或多个控制参数的调整。 这会在过载时降低后期块的预期负载,反之亦然。