Command description scheme providing for dynamic update of instance documents and their associated schema
    61.
    发明授权
    Command description scheme providing for dynamic update of instance documents and their associated schema 失效
    提供动态更新实例文档及其关联模式的命令描述方案

    公开(公告)号:US08296805B2

    公开(公告)日:2012-10-23

    申请号:US09865030

    申请日:2001-05-24

    IPC分类号: H04N5/445

    摘要: The present invention provides a method and system for dynamically updating descriptions of AV content, such as MPEG-7 content descriptions. One embodiment provides for a method in which first a server issues a command indicating the type of update to make to the description on a client computer. Specifically, the update may be to add, delete, or change a node in a tree or graph structure describing the AV content. For example, the command may specify an update to an instance document or its associated schema. The server also specifies the location in the description to perform the update, which may be at an absolute or relative address. Next, the server sends the data, if any, to be added or used for the change. Embodiments also provide for steps to check that the update is authorized.

    摘要翻译: 本发明提供一种用于动态地更新诸如MPEG-7内容描述的AV内容的描述的方法和系统。 一个实施例提供了一种方法,其中首先服务器发出指示要在客户端计算机上描述的更新类型的命令。 具体而言,更新可以是添加,删除或改变描述AV内容的树或图形结构中的节点。 例如,该命令可以指定对实例文档或其关联模式的更新。 服务器还指定描述中执行更新的位置,可能是绝对地址或相对地址。 接下来,服务器发送要添加或用于更改的数据(如果有)。 实施例还提供了检查更新被授权的步骤。

    Method of compensating the color tone differences between two images of the same scene
    62.
    发明授权
    Method of compensating the color tone differences between two images of the same scene 有权
    补偿相同场景的两幅图像之间的色调差异的方法

    公开(公告)号:US08199384B2

    公开(公告)日:2012-06-12

    申请号:US11811717

    申请日:2007-06-11

    IPC分类号: G03F3/08

    摘要: The color tone compensation method provides a simple and efficient method to compensate the color tone differences between two different sources of images. A first image sample, such as a still image, from a first image capturing source and a second image sample, such as a video frame, from a second image capturing source are aligned, and a tone-mapping estimation routine is applied to the two aligned images. The tone-mapping estimation routine uses the pixel intensity value histograms associated with the two aligned images and generates a tone mapping table. The tone mapping table includes a conversion intensity value for each intensity value in the second image. The conversion intensity value is a statistical measure, such as the mean, calculated according to the data in the corresponding pixel intensity value histogram. The tone-mapping table is applied to any image generated by the second image capturing source, thereby generating a new image with similar color tone as the first image generated by the first image capturing source.

    摘要翻译: 色调补偿方法提供了一种简单有效的方法来补偿两种不同图像源之间的色调差异。 将来自第一图像捕获源的第一图像样本(例如静止图像)和来自第二图像捕获源的诸如视频帧的第二图像样本对准,并且将色调映射估计例程应用于两个 对齐图像。 色调映射估计例程使用与两个对准图像相关联的像素强度值直方图,并生成色调映射表。 色调映射表包括第二图像中每个强度值的转换强度值。 转换强度值是统计度量,如平均值,根据相应像素强度值直方图中的数据计算。 色调映射表应用于由第二图像捕获源产生的任何图像,从而生成与由第一图像捕获源生成的第一图像相似的色调的新图像。

    MULTI-PARAMETER MOTION FOR EFFICIENT PREDICTION IN VIDEO COMPRESSION
    63.
    发明申请
    MULTI-PARAMETER MOTION FOR EFFICIENT PREDICTION IN VIDEO COMPRESSION 有权
    多参数运动在视频压缩中的有效预测

    公开(公告)号:US20120014452A1

    公开(公告)日:2012-01-19

    申请号:US13176124

    申请日:2011-07-05

    IPC分类号: H04N7/12

    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。

    VIDEO CODING SYSTEM USING TEXTURE ANALYSIS AND SYNTHESIS IN A SCALABLE CODING FRAMEWORK
    64.
    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。

    Image processing apparatus and method
    65.
    发明授权
    Image processing apparatus and method 失效
    图像处理装置及方法

    公开(公告)号:US07330584B2

    公开(公告)日:2008-02-12

    申请号:US10965297

    申请日:2004-10-14

    IPC分类号: G06K9/00

    CPC分类号: H04N7/144 G06K9/32 G06T7/33

    摘要: An image processing apparatus and an image processing method, applied to e.g. a TV conference system or a TV telephone system, in which an image to be transmitted or received is captured and reconstructed into a virtual view point image which may appear as if it is captured by a virtual camera. The correspondence between pixels may be taken with higher robustness and higher accuracy, while mismatch in such correspondence, otherwise caused due to disparity, may be reduced to as small a value as possible. To this end, the disparity between the images, obtained on imaging an object from different view points by at least two cameras 11a, 12a, are detected and, based on the detected disparity, each of the images is separated into plural image regions. The relation of correspondence is found of the separated each image region, in association with the object, from one pixel position on the same horizontal lines to the next. From the pixel positions and the associated luminance components, for which the relation of correspondence has been found, a virtual view point image, to be generated by a virtual camera, mounted imaginarily, is constructed.

    摘要翻译: 一种图像处理装置和图像处理方法。 电视会议系统或电视电话系统,其中要发送或接收的图像被捕获并重建成虚拟视点图像,虚拟视点图像可能看起来好象被虚拟相机捕获。 可以以更高的鲁棒性和更高的精度获得像素之间的对应关系,而否则由于视差引起的这种对应关系的失配可能减小到尽可能小的值。 为此,检测由至少两个摄像机11a,12a对来自不同视点的物体成像得到的图像之间的差异,并且基于检测到的视差,将每个图像分离成多个图像区域 。 从相同水平线上的一个像素位置到下一个像素位置,找出与对象相关联的分离的每个图像区域的对应关系。 从像素位置和已经找到对应关系的相关联的亮度分量构造出由虚拟照相机生成的虚拟视点图像。

    Scalable video coding (SVC) file format
    66.
    发明申请
    Scalable video coding (SVC) file format 有权
    可扩展视频编码(SVC)文件格式

    公开(公告)号:US20070016594A1

    公开(公告)日:2007-01-18

    申请号:US11398195

    申请日:2006-04-04

    IPC分类号: G06F7/00

    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。

    Coarse representation of visual object's shape for search/query/filtering applications
    68.
    发明授权
    Coarse representation of visual object's shape for search/query/filtering applications 有权
    用于搜索/查询/过滤应用程序的视觉对象形状的粗略表示

    公开(公告)号:US07155033B1

    公开(公告)日:2006-12-26

    申请号:US09494514

    申请日:2000-02-01

    IPC分类号: G06K9/00

    CPC分类号: G06T9/20 Y10S707/99937

    摘要: A method of coarse representation of a visual object's shape for search/query/filtering applications uses a binding box that fully encompasses the object of interest within the image to extract a feature vector. Once the feature vector is available, matching based on specific queries may be performed using a search engine to compare the query number to an appropriate element of the feature vector, performing sorting to pick the best matches.

    摘要翻译: 用于搜索/查询/过滤应用的视觉对象形状的粗略表示的方法使用完全包含图像内的感兴趣对象的绑定框来提取特征向量。 一旦特征向量可用,可以使用搜索引擎来执行基于特定查询的匹配,以将查询号码与特征向量的适当元素进行比较,执行排序以选择最佳匹配。

    Storing SVC streams in the AVC file format
    69.
    发明申请
    Storing SVC streams in the AVC file format 审中-公开
    以AVC文件格式存储SVC流

    公开(公告)号:US20060233247A1

    公开(公告)日:2006-10-19

    申请号:US11318904

    申请日:2005-12-23

    摘要: A system and method of coding (encoding and/or decoding) video content to extend file formats for storage. The system and method utilizes the concept to define additional sample group description entries. By way of example the method can comprise the steps of: (1) receiving a file with encoded media data as a scalable video codec stream; (2) extracting information identifying the various spatial resolutions, temporal resolutions, quality resolutions or combinations of spatio-temporal-quality resolutions from the media data; (3) generating new description entries and dependency grouping box; (4) populating boxes with extracted metadata; and (5) incorporating metadata into a file associated with the media data using a specific media file format.

    摘要翻译: 编码(编码和/或解码)视频内容以扩展用于存储的文件格式的系统和方法。 该系统和方法利用该概念来定义附加的样本组描述条目。 作为示例,该方法可以包括以下步骤:(1)接收具有编码媒体数据的文件作为可伸缩视频编解码流; (2)从媒体数据提取识别各种空间分辨率,时间分辨率,质量分辨率或时空质量分辨率的组合的信息; (3)生成新的描述条目和依赖关系分组框; (4)用提取的元数据填充框; 和(5)使用特定媒体文件格式将元数据结合到与媒体数据相关联的文件中。

    Method and apparatus for organizing data pertaining to audiovisual content
    70.
    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。