Method and Apparatus for Hybrid Watermarking
    1.
    发明申请
    Method and Apparatus for Hybrid Watermarking 审中-公开
    混合水印方法与装置

    公开(公告)号:US20090172404A1

    公开(公告)日:2009-07-02

    申请号:US12226915

    申请日:2006-08-11

    CPC分类号: G06T1/0071 G06T2201/0052

    摘要: A hybrid watermark insertion method includes the steps of dividing the digital image into a low frequency region and a high frequency region using an edge map of the digital image; inserting a watermark into the low frequency region of the image by employing a watermarking method using a human visual system (HVS); and inserting the watermark into the high frequency region of the image by employing a quantization index modulation (QIM) method. A hybrid watermark extraction method includes the steps of estimating a reference value used when inserting a watermark, and searching a maximum value of correlation coefficients in an image of the watermark image while changing the estimated reference value within a designated range, to thereby find out the watermark insertion method. Accordingly, the watermark insertion method can be easily identified, thereby enabling the watermark extraction in a more readily manner.

    摘要翻译: 混合水印插入方法包括以下步骤:使用数字图像的边缘图将数字图像分割成低频区域和高频区域; 通过使用人类视觉系统(HVS)的水印方法将水印插入图像的低频区域; 并通过采用量化索引调制(QIM)方法将水印插入图像的高频区域。 混合水印提取方法包括以下步骤:估计在插入水印时使用的参考值,并且在指定范围内改变估计的参考值的同时,在水印图像的图像中搜索相关系数的最大值,从而找出 水印插入法。 因此,可以容易地识别水印插入方法,从而能够更容易地进行水印提取。

    INDEX DATABASE CREATING APPARATUS AND INDEX DATABASE RETRIEVING APPARATUS
    5.
    发明申请
    INDEX DATABASE CREATING APPARATUS AND INDEX DATABASE RETRIEVING APPARATUS 有权
    索引数据库创建设备和索引数据库检索设备

    公开(公告)号:US20100268715A1

    公开(公告)日:2010-10-21

    申请号:US12744146

    申请日:2008-12-08

    IPC分类号: G06F17/30

    CPC分类号: G06F17/30247

    摘要: An index database creating apparatus includes a feature extracting unit for extracting features from a content; an index creating unit for creating feature indices of the extracted features; an index selector for selecting one or more of the feature indices based on frequency-based importance levels thereof; and a feature index database for storing therein the selected feature indices along with locations thereof in the content. The index selector obtains the frequency-based importance levels based on frequency distributions of the feature indices in the content and in other contents to be stored in the feature index database.

    摘要翻译: 索引数据库创建装置包括:特征提取单元,用于从内容中提取特征; 索引创建单元,用于创建所提取的特征的特征索引; 索引选择器,用于基于其基于频率的重要性级别来选择一个或多个特征索引; 以及特征索引数据库,用于在其中存储所选择的特征索引及其在内容中的位置。 索引选择器基于要存储在特征索引数据库中的内容和其他内容中的特征索引的频率分布来获得基于频率的重要性级别。

    Index database creating apparatus and index database retrieving apparatus
    6.
    发明授权
    Index database creating apparatus and index database retrieving apparatus 有权
    索引数据库创建装置和索引数据库检索装置

    公开(公告)号:US08341161B2

    公开(公告)日:2012-12-25

    申请号:US12744146

    申请日:2008-12-08

    IPC分类号: G06F17/30

    CPC分类号: G06F17/30247

    摘要: An index database creating apparatus includes a feature extracting unit for extracting features from a content; an index creating unit for creating feature indices of the extracted features; an index selector for selecting one or more of the feature indices based on frequency-based importance levels thereof; and a feature index database for storing therein the selected feature indices along with locations thereof in the content. The index selector obtains the frequency-based importance levels based on frequency distributions of the feature indices in the content and in other contents to be stored in the feature index database.

    摘要翻译: 索引数据库创建装置包括:特征提取单元,用于从内容中提取特征; 索引创建单元,用于创建所提取的特征的特征索引; 索引选择器,用于基于其基于频率的重要性级别来选择一个或多个特征索引; 以及特征索引数据库,用于在其中存储所选择的特征索引及其在内容中的位置。 索引选择器基于要存储在特征索引数据库中的内容和其他内容中的特征索引的频率分布来获得基于频率的重要性级别。

    FORENSIC MARK INSERTION APPARATUS AND METHOD
    10.
    发明申请
    FORENSIC MARK INSERTION APPARATUS AND METHOD 失效
    威胁标记插入装置和方法

    公开(公告)号:US20110261997A1

    公开(公告)日:2011-10-27

    申请号:US13091569

    申请日:2011-04-21

    IPC分类号: G06K9/00

    摘要: A forensic mark insertion apparatus includes: an original content segment storage unit for storing multiple original contents; and a service control unit for, in response to a request for a content from a user, retrieving an original content corresponding to the request for the content from the original content segment storage unit, separating the retrieved original content into plurality of content segments, selectively inserting a forensic mark into some of the content segments, and assembling the content segments to produce an forensic-mark inserted content to be provided to the user.

    摘要翻译: 法医标记插入装置包括:原始内容段存储单元,用于存储多个原始内容; 以及服务控制单元,用于响应于来自用户的内容的请求,从原始内容段存储单元检索与该内容的请求相对应的原始内容,选择性地将检索的原始内容分离成多个内容段 将取证标记插入到一些内容段中,以及组合内容段以产生要提供给用户的插入法定标记的内容。