Video indexing and image retrieval system
    51.
    发明授权
    Video indexing and image retrieval system 失效
    视频索引和图像检索系统

    公开(公告)号:US07042525B1

    公开(公告)日:2006-05-09

    申请号:US09611133

    申请日:2000-07-06

    申请人: Hong Heather Yu

    发明人: Hong Heather Yu

    IPC分类号: H04N5/14 H04N7/12

    摘要: A video segmentation system generates an S-distance measurement that is a representation of the similarity between adjacent frames of a video sequence. The video segmentation system employs frequency decomposition of a direct current (DC) luminance signal of a compressed video sequence. High and low frequency component signatures are generated from a frequency-decomposed signal using wavelet transformation. A cut detector identifies cut transitions from the low frequency component signature. A fade detector identifies fade transitions the high frequency component signature. A dissolve transition detector employs a double frame differencing algorithm to identify dissolve transitions. A video retrieval system likewise generates an S-distance between a query image and a database image. The video retrieval system employs the low and high frequency component signature to generate the S-distance measurement of the similarity between the query image and the database image. The results of the S-distance measurement allow browsing and searching of the similar database images.

    摘要翻译: 视频分割系统产生作为视频序列的相邻帧之间的相似性的表示的S距离测量。 视频分割系统采用压缩视频序列的直流(DC)亮度信号的频率分解。 使用小波变换从频率分解信号产生高频和低频分量特征。 切割检测器识别来自低频分量签名的切换转换。 衰落检测器识别高频分量签名的衰落转换。 溶解跃迁检测器采用双帧差分算法来识别溶解跃迁。 视频检索系统同样在查询图像和数据库图像之间生成S距离。 视频检索系统采用低频和高频分量特征来生成查询图像和数据库图像之间的相似度的S距离测量。 S距离测量的结果允许浏览和搜索类似的数据库图像。

    Scalable streaming media authentication
    52.
    发明申请
    Scalable streaming media authentication 审中-公开
    可扩展的流媒体认证

    公开(公告)号:US20050281404A1

    公开(公告)日:2005-12-22

    申请号:US10870872

    申请日:2004-06-17

    申请人: Hong Heather Yu

    发明人: Hong Heather Yu

    摘要: Consumer networks, increasingly used for multimedia information and commercial content delivery, are destined to be heterogeneous. To provide QoS, it is necessary to adapt the multimedia stream to the heterogeneous network channel conditions and device capabilities. Meanwhile, security is an important component to restrict unauthorized multimedia content access and distribution. This suggests the need for new cryptography system implementations that can operate at different data rates, i.e., be scaled to various multimedia content, different network topology, changing bandwidth, and diverse receiver device capabilities. Content authentication is one important security tool for secure multimedia content communication. Conventional message authentication schemes do not offer suitable scalability for this new set of applications. The present invention addresses design of scalable media data stream authentication and presents a framework for multimedia authentication that supports various kinds of scalability.

    摘要翻译: 消费者网络越来越多地用于多媒体信息和商业内容传递,注定是异构的。 为了提供QoS,有必要使多媒体流适应异构网络信道条件和设备能力。 同时,安全是限制未经授权的多媒体内容访问和分发的重要组成部分。 这表明需要可以以不同的数据速率操作的新的密码系统实现,即,被缩放到各种多媒体内容,不同的网络拓扑,改变带宽以及各种接收机设备能力。 内容认证是安全多媒体内容通信的重要安全工具之一。 传统的消息认证方案不能为这一新的应用程序提供适当的可扩展性。 本发明解决了可扩展媒体数据流认证的设计,并提出了支持各种可扩展性的多媒体认证框架。

    System and method for transmission control protocol service delivery in wireless communications systems
    54.
    发明授权
    System and method for transmission control protocol service delivery in wireless communications systems 有权
    用于无线通信系统中传输控制协议服务传送的系统和方法

    公开(公告)号:US09456377B2

    公开(公告)日:2016-09-27

    申请号:US13340027

    申请日:2011-12-29

    摘要: A method for delivering packets in a wireless communications system includes determining a cause of loss for a previously transmitted packet based on a packet acknowledgement corresponding to the previously transmitted packet, the packet acknowledgement including at least one of a wireless loss indicator and a congestion warning indicator for the wireless communications system. The method also includes adjusting a transmission parameter in a packet transmission protocol according to the cause of loss, and retransmitting the previously transmitted packet.

    摘要翻译: 一种用于在无线通信系统中传送分组的方法包括基于与先前发送的分组相对应的分组确认来确定先前发送的分组的丢失的原因,分组确认包括无线丢失指示符和拥塞警告指示符中的至少一个 用于无线通信系统。 该方法还包括根据丢失的原因调整分组传输协议中的传输参数,并重传先前发送的分组。

    Method and system for video summarization
    55.
    发明授权
    Method and system for video summarization 有权
    视频摘要的方法和系统

    公开(公告)号:US09355635B2

    公开(公告)日:2016-05-31

    申请号:US13297142

    申请日:2011-11-15

    摘要: A video summary method comprises dividing a video into a plurality of video shots, analyzing each frame in a video shot from the plurality of video shots, determining a saliency of each frame of the video shot, determining a key frame of the video shot based on the saliency of each frame of the video shot, extracting visual features from the key frame and performing shot clustering of the plurality of video shots to determine concept patterns based on the visual features. The method further comprises fusing different concept patterns using a saliency tuning method and generating a summary of the video based upon a global optimization method.

    摘要翻译: 视频摘要方法包括将视频分成多个视频镜头,分析来自多个视频镜头的视频镜头中的每个帧,确定视频镜头的每个帧的显着性,基于 视频拍摄的每帧的显着性,从关键帧提取视觉特征并执行多个视频镜头的拍摄聚类,以基于视觉特征来确定概念模式。 该方法还包括使用显着性调整方法来融合不同的概念模式,并且基于全局优化方法生成视频的摘要。

    Compressed domain video watermarking
    57.
    发明授权
    Compressed domain video watermarking 有权
    压缩域视频水印

    公开(公告)号:US08848791B2

    公开(公告)日:2014-09-30

    申请号:US13198371

    申请日:2011-08-04

    IPC分类号: H04N7/12 H04N19/61 H04N19/48

    摘要: In accordance with an embodiment, a method of watermarking encoded video frames includes electronically receiving a bitstream comprising a plurality of encoded video frames that are divided into a plurality of macro-blocks, determining macro-block dependencies based on prediction information in the received bitstream, determining a set of macro-blocks having a minimal number of macro-block dependencies, and embedding a watermark in a plurality of macro-blocks selected from the set of macro-blocks having the minimal number of macro-block dependencies.

    摘要翻译: 根据实施例,一种对编码视频帧进行水印处理的方法包括电子地接收包含被划分成多个宏块的多个编码视频帧的比特流,基于接收的比特流中的预测信息确定宏块依赖性, 确定具有最小数量的宏块相关性的一组宏块,以及将水印嵌入从具有最少数量的宏块依赖性的宏组中选择的多个宏块中。

    System and method for image authentication
    59.
    发明授权
    System and method for image authentication 有权
    用于图像认证的系统和方法

    公开(公告)号:US08483427B2

    公开(公告)日:2013-07-09

    申请号:US12892148

    申请日:2010-09-28

    IPC分类号: G06K9/62

    摘要: In accordance with an embodiment, a method of authenticating images includes electronically receiving an anchor image and a query image, performing a feature point extraction of an anchor image, and performing a feature point extraction of a query image. The method also includes clustering feature points of the anchor image and feature points of the query image, where clustering includes determining matching feature points, determining outlier feature points, and excluding outlier feature points. Whether the anchor image is similar to the query image is determined based on a distance between the feature points of the anchor image and the feature points of the query image. If the anchor image is similar to the query image, possible tampered areas of the query image based on the outlier feature points are identified.

    摘要翻译: 根据实施例,认证图像的方法包括电子地接收锚图像和查询图像,执行锚图像的特征点提取,以及执行查询图像的特征点提取。 该方法还包括锚图像的聚类特征点和查询图像的特征点,其中聚类包括确定匹配特征点,确定离群点特征点,并排除异常值特征点。 基于锚图像的特征点与查询图像的特征点之间的距离来确定锚图像是否类似于查询图像。 如果锚图像与查询图像相似,则识别基于异常特征点的查询图像的可能的篡改区域。

    System and Method for Retargeting Video Sequences
    60.
    发明申请
    System and Method for Retargeting Video Sequences 有权
    重新定位视频序列的系统和方法

    公开(公告)号:US20130050574A1

    公开(公告)日:2013-02-28

    申请号:US13220000

    申请日:2011-08-29

    IPC分类号: H04N7/01

    CPC分类号: G06K9/00751 G06K9/4671

    摘要: A system and method for retargeting video sequences are provided. A method for retargeting a video includes a plurality of frames includes determining saliency information for the plurality of frames, determining a cost metric for the video, and retargeting the video based on the cost metric to produce a retargeted video. The cost metric considers loss due to cropping, scaling, temporal factors, and spatial factors. The retargeting makes use of a crop window for each frame in the plurality of frames.

    摘要翻译: 提供了一种用于重定向视频序列的系统和方法。 用于重新定位视频的方法包括多个帧包括确定多个帧的显着性信息,确定视频的成本度量,以及基于成本度量重新定位视频以产生重定向视频。 成本指标考虑到由于种植,缩放,时间因素和空间因素造成的损失。 重定向使用多个帧中的每个帧的裁剪窗口。