Distributed semantic descriptions of audiovisual content
    11.
    发明授权
    Distributed semantic descriptions of audiovisual content 有权
    视听内容的分布式语义描述

    公开(公告)号:US07925139B2

    公开(公告)日:2011-04-12

    申请号:US10005252

    申请日:2001-12-03

    IPC分类号: H04N5/93

    摘要: A method and apparatus for processing descriptions of audiovisual content are described. According to one embodiment, a description of audiovisual content is created, and information pertaining to reuse of the description of audiovisual content is defined. Further, the description of audiovisual content and the reuse information are stored in a repository of descriptive data to enable subsequent reuse of this description.

    摘要翻译: 描述了一种用于处理视听内容的描述的方法和装置。 根据一个实施例,创建对视听内容的描述,并且定义与视听内容的描述的重用有关的信息。 此外,对视听内容和再利用信息的描述被存储在描述性数据的存储库中,以便能够随后重复使用该描述。

    Proposed syntax for a synchronized commands execution
    12.
    发明授权
    Proposed syntax for a synchronized commands execution 失效
    用于同步命令执行的建议语法

    公开(公告)号:US06898607B2

    公开(公告)日:2005-05-24

    申请号:US09904176

    申请日:2001-07-11

    IPC分类号: B60J7/057 G06F17/00

    摘要: A system and method for allowing synchronized execution of a set of commands is provided. A first system contains a content description tree that may be dynamically updated by a set of commands from a second system. In the set of commands, commands may be executed in parallel or in sequence. If the group of commands are tagged to be executed in parallel, parallel execution of commands implies that there are no dependencies between the execution of the commands. As the result, the decoder will have more flexibility to schedule the execution of these commands. If the group of commands are tagged to be executed sequentially, then the order of execution matters. Therefore, in order to synchronize the execution of the group of commands in a set, a parallel or sequential tag is included identifying whether this group of commands should be executed in parallel or in sequence.

    摘要翻译: 提供了允许同步执行一组命令的系统和方法。 第一系统包含可以由来自第二系统的一组命令动态地更新的内容描述树。 在命令集中,可以并行或按顺序执行命令。 如果命令组被标记为并行执行,并行执行命令意味着执行命令之间没有依赖关系。 结果,解码器将具有更多的灵活性来调度这些命令的执行。 如果命令组被标记为顺序执行,则执行顺序很重要。 因此,为了使集合中的命令组的执行同步,包括并行或顺序的并行或顺序标签,以识别该组命令是应当并行还是顺序执行。

    VIDEO CODING SYSTEM USING TEXTURE ANALYSIS AND SYNTHESIS IN A SCALABLE CODING FRAMEWORK
    13.
    发明申请
    VIDEO CODING SYSTEM USING TEXTURE ANALYSIS AND SYNTHESIS IN A SCALABLE CODING FRAMEWORK 失效
    使用纹理分析和可缩放编码框架中的合成的视频编码系统

    公开(公告)号:US20090180552A1

    公开(公告)日:2009-07-16

    申请号:US12235499

    申请日:2008-09-22

    IPC分类号: H04N7/26

    摘要: An apparatus or method of efficiently coding high resolution video using texture analysis and synthesis techniques in a scalable video coding framework. A high-resolution video signal is spatially downsampled and encoded into a base-layer. Texture and structure information are extracted from the downsampled signal and base-layer for use by a texture synthesizer. The texture synthesizer is structurally and texturally aware utilizing edge information from a base-layer of the synthesizer to improve synthesis. After synthesis, a video quality assessor directs enhancement-layer coding of unacceptably synthesized areas by alternate (non-textural) coding means, such as conventional AVC or MPEG-2 coding. In one mode, the quality assessor iteratively improves synthesis of certain blocks to make them acceptable for enhancement-layer coding. The apparatus or method outputs a bit stream, or bit streams, containing both the coded base-layer and the enhancement-layer.

    摘要翻译: 一种在可扩展视频编码框架中使用纹理分析和合成技术高效编码高分辨率视频的装置或方法。 高分辨率视频信号在空间上被下采样并编码成基层。 从下采样信号和基层提取纹理和结构信息以供纹理合成器使用。 纹理合成器在结构和结构上意识到利用来自合成器的基层的边缘信息来改进合成。 在合成之后,视频质量评估者通过诸如常规AVC或MPEG-2编码的交替(非结构化)编码手段指导不可接受的合成区域的增强层编码。 在一种模式中,质量评估者迭代地改进某些块的合成以使其对于增强层编码是可接受的。 该装置或方法输出包含编码的基础层和增强层两者的比特流或比特流。

    Multi-parameter motion for efficient prediction in video compression
    17.
    发明授权
    Multi-parameter motion for efficient prediction in video compression 有权
    多参数运动用于视频压缩中的高效预测

    公开(公告)号:US08908755B2

    公开(公告)日:2014-12-09

    申请号:US13176124

    申请日:2011-07-05

    摘要: Motion Compensated Prediction (MCP) has been a key factor in most advanced video compression schemes. For further reduction in the residual signal energy in B-frames, bidirectional prediction where two motion-compensated signals are superimposed has also been utilized in most prior video coding standards such as MPEG-2 or MPEG-4/AVC. Syntax changes and appropriate motion vector prediction that allows efficient use of multi-parameter MCP is described. The prediction signal is constructed by linearly combining the motion-compensated signals from each parameter (or motion vector).

    摘要翻译: 运动补偿预测(MCP)一直是大多数高级视频压缩方案的关键因素。 为了进一步降低B帧中的残留信号能量,在大多数先前的视频编码标准(例如MPEG-2或MPEG-4 / AVC)中也已经使用了叠加两个运动补偿信号的双向预测。 描述了允许有效使用多参数MCP的语法改变和适当的运动矢量预测。 通过线性组合来自每个参数(或运动矢量)的运动补偿信号来构造预测信号。

    Optimal separable adaptive loop filter
    19.
    发明授权
    Optimal separable adaptive loop filter 有权
    最优可分离自适应环路滤波器

    公开(公告)号:US08787449B2

    公开(公告)日:2014-07-22

    申请号:US13071258

    申请日:2011-03-24

    IPC分类号: H04B1/66 H04N7/26

    摘要: An adaptive loop filter utilizing separable filters within a quadtree-based adaptive loop filter (QALF). The filters for at least the P and B pictures are replaced with a separable filter to provide Separable QALF (SQALF). In a preferred embodiment the filter comprises a Wiener filter as a best fit approximation of the non-separable filter. In response to decoding with the SQALF approach, computational complexity in the decoder is reduced without lowering perceived visual quality. Estimation of the separable filter is obtained in the encoder by iteratively minimizing the sum of squares error with the separable filter. The SQALF filtering is described within a video decoder.

    摘要翻译: 一种利用基于四叉树的自适应环路滤波器(QALF)中的可分离滤波器的自适应环路滤波器。 用于至少P和B图像的滤波器被替换为可分离滤波器以提供可分离的QALF(SQALF)。 在优选实施例中,滤波器包括作为不可分离滤波器的最佳拟合近似的维纳滤波器。 响应于使用SQALF方法的解码,解码器中的计算复杂度降低而不降低感知的视觉质量。 通过迭代地使可分离滤波器的平方和误差最小化,可以在编码器中获得可分离滤波器的估计。 在视频解码器中描述了SQALF滤波。

    Differential coding of intra directions (DCIC)
    20.
    发明授权
    Differential coding of intra directions (DCIC) 失效
    内部差分编码(DCIC)

    公开(公告)号:US08787444B2

    公开(公告)日:2014-07-22

    申请号:US13176132

    申请日:2011-07-05

    IPC分类号: H04N7/32 H04N7/34 H04N7/26

    摘要: Spatial domain directional intra prediction has been shown to be very effective to remove the correlation between the pixels in the current block and reconstructed neighbors. In AVC, 8 directional prediction modes (plus the DC prediction mode) are defined. The prediction mode number is signaled to the decoder using a simple predictive coding method. The previous intra prediction methods have two major disadvantages: lack of precision for arbitrary directional patterns and accuracy lack of accuracy to exploit geometric dependency between blocks. To address these issues, a new method accurately predicts the intra directions from reconstructed neighboring pixels and differentially encode the intra directions. This allows a more precise directional prediction without the significant increase in the cost for transmitting the side information.

    摘要翻译: 已经显示空间域定向帧内预测对于去除当前块中的像素与重建的邻居之间的相关性非常有效。 在AVC中,定义了8种方向预测模式(加上DC预测模式)。 使用简单的预测编码方法将预测模式信号发送给解码器。 以前的帧内预测方法有两个主要缺点:对于任意方向模式缺乏精度,精度缺乏利用块之间的几何依赖关系。 为了解决这些问题,一种新的方法准确地预测重建的相邻像素的帧内方向,并对帧内方向进行差分编码。 这允许更精确的方向预测,而不会显着增加用于发送侧信息的成本。