Method and system for optimal video transcoding based on utility function descriptors
    51.
    发明申请
    Method and system for optimal video transcoding based on utility function descriptors 有权
    基于效用函数描述符的最佳视频转码方法和系统

    公开(公告)号:US20090290635A1

    公开(公告)日:2009-11-26

    申请号:US10965040

    申请日:2004-10-14

    IPC分类号: H04N7/26

    摘要: Techniques for generating utility-based descriptors from compressed multimedia information are disclosed. A preferred method includes the steps of receiving least a segment of compressed multimedia information, determining two or more portions of utility based descriptor information based on one or more adaptation operations, each corresponding to a unique target rate, adapting the compressed multimedia segment by each the portions of utility based descriptor information to generate adapted multimedia segments, using a quality management method to generate measurement for each adapted multimedia segment, and generating a utility based descriptors based on the portions of utility based descriptor information and corresponding quality measurements.

    摘要翻译: 公开了从压缩多媒体信息生成基于实用的描述符的技术。 一种优选的方法包括以下步骤:接收压缩多媒体信息的最小部分,基于一个或多个自适应操作确定基于效用的描述符信息的两个或多个部分,每个自适应操作对应于唯一的目标速率, 使用基于效用的描述符信息的部分来生成适应的多媒体段,使用质量管理方法为每个适配的多媒体段生成测量,以及基于基于实用的描述符信息和对应的质量测量的部分生成基于实用的描述符。

    Methods and architecture for indexing and editing compressed video over the world wide web
    52.
    发明申请
    Methods and architecture for indexing and editing compressed video over the world wide web 有权
    通过万维网对压缩视频进行索引编辑的方法和架构

    公开(公告)号:US20080131072A1

    公开(公告)日:2008-06-05

    申请号:US10728345

    申请日:2003-12-04

    IPC分类号: H04N5/93

    CPC分类号: G11B27/28 G11B27/034

    摘要: A system and method is provided for editing and parsing compressed digital information. The compressed digital information may include visual information which is edited and parsed in the compressed domain. In a preferred embodiment, the present invention provides a method for detecting moving objects in a compressed digital bitstream which represents a sequence of fields or frames of video information for one or more captured scenes of video.

    摘要翻译: 提供了一种用于编辑和解析压缩数字信息的系统和方法。 压缩的数字信息可以包括在压缩域中编辑和解析的视觉信息。 在优选实施例中,本发明提供了一种用于检测压缩数字比特流中的运动对象的方法,该压缩数字比特流表示视频的一个或多个拍摄场景的视频信息的字段或帧序列。

    ACTIVE CONTEXT-BASED CONCEPT FUSION
    53.
    发明申请
    ACTIVE CONTEXT-BASED CONCEPT FUSION 有权
    基于活动的基于语境的概念融合

    公开(公告)号:US20070271256A1

    公开(公告)日:2007-11-22

    申请号:US11615120

    申请日:2006-12-22

    IPC分类号: G06F17/30

    CPC分类号: G06F17/30265

    摘要: A context-based concept fusion method detects a first concept in an image record. The method includes automatically determining at least one other concept in the image record which has a contextual relationship with the first concept and which is to be labeled by a user of the method; and labeling the at least one other concept by the user with a ground truth label to be used in the context-based concept fusion method to improve detection of the first concept in the image record.

    摘要翻译: 基于上下文的概念融合方法检测图像记录中的第一概念。 该方法包括自动确定图像记录中至少一个与第一概念具有上下文关系并且由该方法的用户标记的其它概念; 以及用户使用要在基于上下文的概念融合方法中使用的基本真值标签来标记所述至少一个其他概念,以改进对图像记录中的第一概念的检测。

    Multimedia Integration Description Scheme, Method and System For MPEG-7
    54.
    发明申请
    Multimedia Integration Description Scheme, Method and System For MPEG-7 有权
    MPEG-7多媒体集成说明方案,方法与系统

    公开(公告)号:US20060167876A1

    公开(公告)日:2006-07-27

    申请号:US11278671

    申请日:2006-04-04

    IPC分类号: G06F7/00 G06F17/30 G06F17/21

    摘要: The invention provides a system and method for integrating multimedia descriptions in a way that allows humans, software components or devices to easily identify, represent, manage, retrieve, and categorize the multimedia content. In this manner, a user who may be interested in locating a specific piece of multimedia content from a database, Internet, or broadcast media, for example, may search for and find the multimedia content. In this regard, the invention provides a system and method that receives multimedia content and separates the multimedia content into separate components which are assigned to multimedia categories, such as image, video, audio, synthetic and text. Within each of the multimedia categories, the multimedia content is classified and descriptions of the multimedia content are generated. The descriptions are then formatted, integrated, using a multimedia integration description scheme, and the multimedia integration description is generated for the multimedia content. The multimedia description is then stored into a database. As a result, a user may query a search engine which then retrieves the multimedia content from the database whose integration description matches the query criteria specified by the user. The search engine can then provide the user a useful search result based on the multimedia integration description.

    摘要翻译: 本发明提供一种用于以允许人,软件组件或设备容易地识别,表示,管理,检索和分类多媒体内容的方式来集成多媒体描述的系统和方法。 以这种方式,例如,可能有兴趣从数据库,因特网或广播媒体定位特定的多媒体内容的用户可以搜索和查找多媒体内容。 在这方面,本发明提供了一种接收多媒体内容并将多媒体内容分离成分配给多媒体类别(诸如图像,视频,音频,合成和文本)的组件的系统和方法。 在多媒体类别的每一个内,对多媒体内容进行分类,并且生成多媒体内容的描述。 然后使用多媒体集成描述方案对所述描述进行格式化,集成化,并且为多媒体内容生成多媒体集成描述。 然后将多媒体描述存储到数据库中。 结果,用户可以查询搜索引擎,该搜索引擎然后从整合描述与用户指定的查询标准匹配的数据库中检索多媒体内容。 然后,搜索引擎可以基于多媒体整合描述向用户提供有用的搜索结果。

    Algorithms and system for object-oriented content-based video search
    55.
    发明授权
    Algorithms and system for object-oriented content-based video search 有权
    面向对象内容视频搜索的算法和系统

    公开(公告)号:US06741655B1

    公开(公告)日:2004-05-25

    申请号:US09423409

    申请日:2000-02-22

    IPC分类号: H04N718

    摘要: Object-oriented methods and systems for permitting a user to locate one or more video objects from one or more video clips over an interactive network are disclosed. The system includes one or more server computers (110) comprising storage (111) for video clips and databases of video object attributes, a communications network (120), and a client computer (130). The client computer contains a query interface to specify video object attribute information, including motion trajectory information (134), a browser interface to browse through stored video object attributes within the server computers, and an interactive video player.

    摘要翻译: 公开了一种用于允许用户通过交互网络从一个或多个视频剪辑定位一个或多个视频对象的面向对象的方法和系统。 该系统包括一个或多个服务器计算机(110),其包括用于视频剪辑的存储(111)和视频对象属性的数据库,通信网络(120)和客户端计算机(130)。 客户端计算机包含用于指定视频对象属性信息的查询界面,包括运动轨迹信息(134),浏览服务器计算机内存储的视频对象属性的浏览器界面和交互式视频播放器。

    Method and apparatus for image authentication
    56.
    发明授权
    Method and apparatus for image authentication 失效
    图像认证方法和装置

    公开(公告)号:US06532541B1

    公开(公告)日:2003-03-11

    申请号:US09235862

    申请日:1999-01-22

    IPC分类号: H04L900

    摘要: A system for authentication of a digital image includes a signature generator for creating a robust digital signature for an original image based on instrument features of the image. An authentication processor extracts a set of invariant features for the original image from the digital signature, generates a corresponding set of invariant features for the present image to be authenticated and compares the two sets of invariant features to determine whether the image has been subjected to malicious manipulation. The invariant features include the polarity and magnitude of the difference between discrete cosine transform coefficients at corresponding coefficient locations in selected image block pairs. The intensity of the original image is also authenticated by comparing a mean value of coefficient of the original image to the mean value of the coefficient of the present image.

    摘要翻译: 用于认证数字图像的系统包括签名生成器,用于基于图像的乐器特征为原始图像创建鲁棒的数字签名。 认证处理器从数字签名中提取原始图像的一组不变特征,为要验证的当前图像生成相应的一组不变特征,并比较两组不变特征,以确定图像是否已经受到恶意 操纵。 不变特征包括所选图像块对中相应系数位置处的离散余弦变换系数之间的差异的极性和幅度。 通过将原始图像的系数的平均值与当前图像的系数的平均值进行比较,也可以对原始图像的强度进行认证。

    Error resilient transcoding for video over wireless channels
    57.
    发明授权
    Error resilient transcoding for video over wireless channels 有权
    通过无线频道对视频进行弹性转码错误

    公开(公告)号:US06339450B1

    公开(公告)日:2002-01-15

    申请号:US09399689

    申请日:1999-09-21

    IPC分类号: H04N704

    摘要: A method and system for maintaining the quality of video transported over wireless channels uses a transcoder to modify and maintain the optical resilience of an encoded bitstream. The transcoder increases the spatial resilience by reducing the number of blocks per slice, and increases the temporal resilience by increasing the proportion of I-blocks that are transmitted in each frame. Also, the transcoder maintains the same input bit rate by dropping less significant coefficients as it increases resilience. The transcoder of the present invention maintains the resilience at an optimal level to accommodate the prevailing channel conditions as measured by the BER of the wireless channel. Rate distortion theory is applied to determine the optimal allocation of bit rate among spatial resilience, temporal resilience and source rate, where it is has been found that the optimal allocation of the present invention (which occurs in near-real time) provides nearly the same result as doing an exhaustive search.

    摘要翻译: 用于维持通过无线信道传输的视频的质量的方法和系统使用代码转换器来修改和维持编码比特流的光弹性。 代码转换器通过减少每个片段的块数来增加空间弹性,并且通过增加在每个帧中发送的I块的比例来增加时间弹性。 此外,代码转换器通过在增加复原力的同时降低较不重要的系数来维持相同的输入比特率。 本发明的代码转换器将弹性保持在最佳水平以适应由无线信道的BER测量的主要信道条件。 应用速率失真理论来确定空间弹性,时间弹性和源速率之间的比特率的最佳分配,其中已经发现本发明的最佳分配(以近实时发生)提供几乎相同的 结果是做一个详尽的搜索。