Method and apparatus for organizing data pertaining to audiovisual content
    61.
    发明授权
    Method and apparatus for organizing data pertaining to audiovisual content 失效
    用于组织有关视听内容的数据的方法和装置

    公开(公告)号:US06944608B2

    公开(公告)日:2005-09-13

    申请号:US10693278

    申请日:2003-10-23

    IPC分类号: G06F17/30

    摘要: A method and apparatus for organizing data pertaining to audiovisual content are described. According to one embodiment, an exemplary method for organizing data pertaining to audiovisual content includes defining at least one descriptive list for a descriptive portion of the data pertaining to audiovisual content, defining at least one accessing list for an accessing portion of the data pertaining to audiovisual content, and generating a matrix that connects the accessing list to the descriptive list.

    摘要翻译: 描述用于组织与视听内容有关的数据的方法和装置。 根据一个实施例,用于组织与视听内容相关的数据的示例性方法包括为与视听内容相关的数据的描述部分定义至少一个描述列表,为视听内容的数据的访问部分定义至少一个访问列表 内容,并生成将访问列表连接到描述性列表的矩阵。

    Adaptive joint source channel coding
    62.
    发明申请
    Adaptive joint source channel coding 失效
    自适应联合信道编码

    公开(公告)号:US20050129128A1

    公开(公告)日:2005-06-16

    申请号:US11015840

    申请日:2004-12-16

    IPC分类号: H04B1/66

    摘要: Adaptive joint source channel coding associates multiple predictors with a reference data unit, such as a macroblock or frame of video data. An encoder determines a sub-codebook in which each of the selected multiple predictors decodes to the reference data unit. An identifier for the sub-codebook is transmitted through a channel to a decoder for subsequent decoding of the reference data unit. The reference data unit itself does not need to be sent. The multiple predictors are contained within a decoding region and the identifier for the sub-codebook specifies the decoding region. The decoder uses the identified sub-codebook and one of the predictors to decode the reference data unit. If none of the original predictors are correctly received, different types of error handling are employed based on the type of channel.

    摘要翻译: 自适应联合源信道编码将多个预测器与诸如宏块或视频数据帧的参考数据单元相关联。 编码器确定其中每个所选择的多个预测器解码到参考数据单元的子码本。 子码本的标识符通过信道发送到解码器,用于参考数据单元的后续解码。 参考数据单元本身不需要发送。 多个预测器被包含在解码区域内,并且子码本的标识符指定解码区域。 解码器使用所识别的子码本和预测器之一来解码参考数据单元。 如果没有正确接收到原始预测器,则基于通道的类型采用不同类型的错误处理。

    Method to optimize the transforms and/or predictions in a video codec
    63.
    发明授权
    Method to optimize the transforms and/or predictions in a video codec 有权
    优化视频编解码器中的变换和/或预测的方法

    公开(公告)号:US09066097B2

    公开(公告)日:2015-06-23

    申请号:US13019068

    申请日:2011-02-01

    摘要: A joint optimization iterative algorithm determines optimized mode pairs. Each mode pair includes an intra-predictor and a transform pair that are iteratively modified to determine an optimized intra-predictor and an optimized transform that forms the optimized mode pair. A set of training videos and a set of quantization parameters (QPs) are used as the base data for determining the optimized mode pairs. Each video includes a plurality of pixel blocks, herein referred to as blocks. Block statistics associated with each mode pair are accumulated by separately encoding each block using each mode pair, and selecting the best mode pair for each block according to a measured characteristic of each encoding. The accumulated block statistics are used to modify the intra-predictor and the transform within each mode pair.

    摘要翻译: 联合优化迭代算法确定优化模式对。 每个模式对包括内部预测器和变换对,其被迭代地修改以确定优化的预测器和形成优化模式对的优化变换。 使用一组训练视频和一组量化参数(QP)作为确定优化模式对的基础数据。 每个视频包括多个像素块,这里称为块。 通过使用每个模式对分别对每个模块进行编码来累积与每个模式对相关联的块统计量,并且根据每个编码的测量特性为每个块选择最佳模式对。 累积的块统计量用于修改每个模式对内的预测器和变换。

    Iterative computation of adaptive interpolation filter
    64.
    发明授权
    Iterative computation of adaptive interpolation filter 失效
    自适应插值滤波器的迭代计算

    公开(公告)号:US08553763B2

    公开(公告)日:2013-10-08

    申请号:US12797873

    申请日:2010-06-10

    IPC分类号: H04N7/12

    摘要: The invention is an apparatus and method for estimating an optimized sub-pixel interpolation filter using iterative estimations as needed for sub-pixel motion compensation and motion estimation in a video codec for improving coding efficiency. Multiple iterations of adaptive interpolation filter estimation are performed including more than one iteration based on sub-pixel motion vectors. During testing of the inventive apparatus and method on various video segments, average bit rate reductions were exhibited of approximately 5%.

    摘要翻译: 本发明是一种用于根据视频编解码器中的子像素运动补偿和运动估计所需的迭代估计来估计优化的子像素内插滤波器的装置和方法,用于提高编码效率。 执行自适应内插滤波估计的多次迭代,其包括基于子像素运动矢量的多次迭代。 在针对各种视频片段的本发明装置和方法的测试期间,显示出大约5%的平均比特率降低。

    QUANTIZATION MATRIX DESIGN FOR HEVC STANDARD
    65.
    发明申请
    QUANTIZATION MATRIX DESIGN FOR HEVC STANDARD 审中-公开
    HEVC标准的量化矩阵设计

    公开(公告)号:US20130188691A1

    公开(公告)日:2013-07-25

    申请号:US13597131

    申请日:2012-08-28

    IPC分类号: H04N7/26

    摘要: Quantization (scaling) matrices for HEVC standards using an HVS-based mathematical model and data analysis are described herein. A quadratic parameter model-based quantization matrix design is also included.

    摘要翻译: 本文描述了使用基于HVS的数学模型和数据分析的HEVC标准的量化(缩放)矩阵。 还包括基于二次参数模型的量化矩阵设计。

    Scalable video coding (SVC) file format
    66.
    发明授权
    Scalable video coding (SVC) file format 失效
    可扩展视频编码(SVC)文件格式

    公开(公告)号:US08291104B2

    公开(公告)日:2012-10-16

    申请号:US12755674

    申请日:2010-04-07

    IPC分类号: G06F15/16

    摘要: The currently existing ISO/AVC file format is modified by providing extensions to store and access video content currently being defined by the SVC standard. Specifically, extensions to the AVC file format are made to provide a new SVC file format that enables the storage and access of scalable video data. The scalable video data is stored as a single track within a media data section of the SVC file format. New extensions are defined for description entries and boxes within a metadata section of the SVC file format. These extensions provide means for extracting sub-streams or layers from the single track of scalable video data stored in the media data section.

    摘要翻译: 通过提供扩展来修改当前存在的ISO / AVC文件格式,以存储和访问当前由SVC标准定义的视频内容。 具体来说,AVC文件格式的扩展是为了提供一种新的SVC文件格式,可以实现可扩展视频数据的存储和访问。 可扩展视频数据作为单个轨道存储在SVC文件格式的媒体数据部分内。 为SVC文件格式的元数据部分中的描述条目和框定义新的扩展。 这些扩展提供用于从存储在媒体数据部分中的可伸缩视频数据的单个轨道中提取子流或层的装置。

    RUN LENGTH CODING WITH CONTEXT MODEL FOR IMAGE COMPRESSION USING SPARSE DICTIONARIES
    67.
    发明申请
    RUN LENGTH CODING WITH CONTEXT MODEL FOR IMAGE COMPRESSION USING SPARSE DICTIONARIES 失效
    使用稀疏字体的图像压缩的运行长度编码与图像压缩

    公开(公告)号:US20120057799A1

    公开(公告)日:2012-03-08

    申请号:US12962638

    申请日:2010-12-07

    IPC分类号: G06K9/46

    摘要: Apparatus and methods for coding images geometric vector quantization (GVQ) having an over-complete dictionary which produces a sparse vector of coefficients as it contains large runs of zeros. The sparse encoding is particularly well suited for use with run-length entropy coding techniques. Image blocks are sparse coded using GVQ, with the vector of coefficients converted to RUN-LENGTH symbols, and binarized into a set of binary symbols. At least a portion of the binary symbols are used as contexts which can be selected when performing binary arithmetic coding of the binary coded RUN and LENGTH data to generate a bit stream containing the encoded image that provides enhanced compression.

    摘要翻译: 用于编码具有过完整字典的图像几何矢量量化(GVQ)的装置和方法,其在包含大量零的零时产生系数的稀疏矢量。 稀疏编码特别适用于游程长度熵编码技术。 使用GVQ对图像块进行稀疏编码,将系数矢量转换为RUN-LENGTH符号,并将其二值化为一组二进制符号。 二进制符号的至少一部分被用作当对二进制编码的RUN和LENGTH数据执行二进制算术编码时可以选择的上下文,以生成包含提供增强压缩的编码图像的比特流。

    Encoding and distribution of schema for multimedia content descriptions
    68.
    发明授权
    Encoding and distribution of schema for multimedia content descriptions 有权
    多媒体内容描述模式的编码和分配

    公开(公告)号:US07870483B2

    公开(公告)日:2011-01-11

    申请号:US11805942

    申请日:2007-05-25

    IPC分类号: G06F17/00

    摘要: The encoding and distribution of schema for multimedia content descriptions are described. Before the schema is sent to a system for use, it is encoded by assigning a first token for each component in the schema and a second token for each attribute of each component. In one aspect, a signifier is sent first to signal that the schema is to be sent in a particular format. In one aspect, the schema is sent as a whole entity first. In another aspect, some of the components of the schema are sent first, followed by the schema that refers to these components. In another aspect, the schema is sent first, followed by a set of component types. When the decoder receives the signifier and encoded schema, it looks up values for the first and second tokens in a look up table for all components and attributes to decode the schema.

    摘要翻译: 描述了用于多媒体内容描述的模式的编码和分发。 在将模式发送到系统以供使用之前,通过为模式中的每个组件分配第一个令牌,并为每个组件的每个属性分配第二个令牌来进行编码。 在一个方面,首先发送指示符以表明将以特定格式发送模式。 在一个方面,该模式首先作为整体实体发送。 在另一方面,模式的一些组件首先发送,后面是引用这些组件的模式。 另一方面,首先发送模式,然后发送一组组件类型。 当解码器接收到指示符和编码模式时,它会查找查找表中第一个和第二个令牌的值,以便解码该模式的所有组件和属性。

    METHOD AND APPARATUS FOR HIERARCHICAL BI-DIRECTIONAL INTRA-PREDICTION IN A VIDEO ENCODER
    70.
    发明申请
    METHOD AND APPARATUS FOR HIERARCHICAL BI-DIRECTIONAL INTRA-PREDICTION IN A VIDEO ENCODER 有权
    视频编码器中分层双向预测的方法与装置

    公开(公告)号:US20100246672A1

    公开(公告)日:2010-09-30

    申请号:US12415901

    申请日:2009-03-31

    IPC分类号: H04N7/32

    摘要: Method and apparatus for hierarchical bi-directional intra-prediction in a video encoder is described. In some examples, initial reference blocks are selected in an image. Sets of blocks in the image are predicted successively over a plurality of stages based on a respectively plurality of templates, each of the plurality of templates including reference blocks selected from at least one of: the initial reference blocks; or previously encoded and reconstructed blocks of the image. The image is encoded in the video encoder using the initial reference blocks and the sets of blocks as predicted.

    摘要翻译: 描述了视频编码器中分级双向帧内预测的方法和装置。 在一些示例中,在图像中选择初始参考块。 基于分别多个模板,在多个级中连续地预测图像中的块的集合,所述多个模板中的每一个包括从以下各项中的至少一个中选择的参考块:初始参考块; 或先前编码和重构的图像块。 图像在视频编码器中使用初始参考块和预测的块组进行编码。