知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

73 条记录 (耗时 0.04 秒)

    Adjusting an electronic camera to acquire an image
    1.
    发明授权
    Adjusting an electronic camera to acquire an image 有权

    公开(公告)号：US06546116B2

    公开(公告)日：2003-04-08

    申请号：US10002352

    申请日：2001-11-13

    申请人： Hugh Brunk ,  Eliot Rogers ,  Brett T. Hannigan

    发明人： Hugh Brunk ,  Eliot Rogers ,  Brett T. Hannigan

    IPC分类号： G06K900

    CPC分类号： G06T1/0021 ,  G06T5/007 ,  G06T5/40 ,  G06T2200/24 ,  G06T2201/0051 ,  G06T2201/0052 ,  G06T2201/0065

    摘要： The present invention provides a mechanism for automatically setting the exposure time and gain of an electronic camera so that the acquired image has improved characteristics for the detection of a digital watermark. With the present invention the exposure time and gain of an electronic camera are set by first directing the camera at a test target with the camera's controls set to a default set of values. The system then calculates a histogram of the luminance values of the pixels in the image. Next characteristic values from the histogram such as the peak value, the centroid value, the RMS value, the median value, etc. are calculated. One or more of the characteristic values of the histogram are then applied as an index or pointer to values of pre-established settings that are stored in a table. Values from the table are used to set the exposure time and/or gain of the camera. In some embodiments, the variance of the luminance histogram is also measured and used to index data from the table.

    Adjusting an electronic camera to acquire a watermarked image
    2.
    发明授权
    Adjusting an electronic camera to acquire a watermarked image 有权
    调整电子照相机以获取水印图像

    公开(公告)号：US06366680B1

    公开(公告)日：2002-04-02

    申请号：US09444770

    申请日：1999-11-22

    申请人： Hugh Brunk ,  Eliot Rogers ,  Brett T. Hannigan

    发明人： Hugh Brunk ,  Eliot Rogers ,  Brett T. Hannigan

    IPC分类号： G06K900

    CPC分类号： G06T1/0021 ,  G06T5/007 ,  G06T5/40 ,  G06T2200/24 ,  G06T2201/0051 ,  G06T2201/0052 ,  G06T2201/0065

    摘要： The present invention provides a mechanism for automatically setting the exposure time and gain of an electronic camera so that the acquired image has improved characteristics for the detection of a digital watermark. With the present invention the exposure time and gain of an electronic camera are set by first directing the camera at a test target with the camera's controls set to a default set of values. The system then calculates a histogram of the luminance values of the pixels in the image. Next characteristic values from the histogram such as the peak value, the centroid value, the RMS value, the median value, etc. are calculated. One or more of the characteristic values of the histogram are then applied as an index or pointer to values of pre-established settings that are stored in a table. Values from the table are used to set the exposure time and/or gain of the camera. In some embodiments, the variance of the luminance histogram is also measured and used to index data from the table.

    摘要翻译： 本发明提供了一种用于自动设置电子照相机的曝光时间和增益的机构，使得所获取的图像具有用于检测数字水印的改进特性。 利用本发明，通过首先将照相机指向测试对象来设置电子照相机的曝光时间和增益，其中照相机的控制设置为默认值。 然后，系统计算图像中的像素的亮度值的直方图。 计算来自直方图的下一个特征值，例如峰值，质心值，RMS值，中值等。 然后将直方图的一个或多个特征值应用作为存储在表中的预先建立的设置的值的索引或指针。 表中的数值用于设置相机的曝光时间和/或增益。 在一些实施例中，还测量亮度直方图的方差，并用于从表中索引数据。

    CONTENT IDENTIFICATION AND ELECTRONIC TICKETS, COUPONS AND CREDITS
    4.
    发明申请
    CONTENT IDENTIFICATION AND ELECTRONIC TICKETS, COUPONS AND CREDITS 有权
    内容标识和电子票，优惠券和信用证

    公开(公告)号：US20120114169A1

    公开(公告)日：2012-05-10

    申请号：US13349948

    申请日：2012-01-13

    申请人： Brett T. Hannigan ,  Tyler J. McKinley

    发明人： Brett T. Hannigan ,  Tyler J. McKinley

    IPC分类号： G06K9/00

    CPC分类号： G07D7/162 ,  G06Q10/087 ,  G06Q10/10 ,  G06T1/0021 ,  G07D7/0034 ,  G09B21/003

    摘要： The present invention relates to digital watermarking methods and systems. In one embodiment, a handheld device displays a digitally watermarked image at an event center. An optical scanner captures optical scan data representing the device display. A watermark decoder analyzes the captured optical scan data to obtain the watermark. The watermark is used to determine authorized entry. The handheld device may include a cell phone or other portable computing device.

    摘要翻译： 本发明涉及数字水印方法和系统。 在一个实施例中，手持设备在事件中心处显示数字水印的图像。 光学扫描仪捕获表示设备显示的光学扫描数据。 水印解码器分析捕获的光扫描数据以获得水印。 水印用于确定授权条目。 手持设备可以包括蜂窝电话或其他便携式计算设备。

    Layered Security in Digital Watermarking
    6.
    发明申请
    Layered Security in Digital Watermarking 有权
    数字水印分层安全

    公开(公告)号：US20100091336A1

    公开(公告)日：2010-04-15

    申请号：US12422715

    申请日：2009-04-13

    申请人： Brett Alan Bradley ,  Brett T. Hannigan ,  John Kennedy Barr

    发明人： Brett Alan Bradley ,  Brett T. Hannigan ,  John Kennedy Barr

    IPC分类号： G06K15/02 ,  G06K9/00

    CPC分类号： G06T1/0071 ,  G06T1/0028 ,  G06T2201/0083 ,  H04N1/32149 ,  H04N1/32283 ,  H04N1/32304 ,  H04N2201/3235 ,  H04N2201/3236 ,  H04N2201/3239

    摘要： A media object authentication system uses layers of security features based on digital watermarks embedded in media objects. The system generates a first digital watermark with a message payload carrying data about the object, such as a hash of text data printed on the object. The first digital watermark is combined with a content signature derived from features of the media object, such as frequency domain attributes, edge attributes, or other filtered version of the media signal (e.g., image photo on a secure document) on the media object. This combination forms a new digital watermark signal that is embedded in the host media object. To verify the object, the digital watermark payload is extracted and compared with the data about the object. The combined digital watermark and content signature is also evaluated to authenticate the media signal on the media object.

    摘要翻译： 媒体对象认证系统使用基于嵌入在媒体对象中的数字水印的安全特征层。 该系统产生具有携带关于对象的数据的消息有效载荷的第一数字水印，诸如打印在对象上的文本数据的散列。 第一数字水印与从媒体对象的特征（例如频域属性，边缘属性或媒体对象上的媒体信号的其他滤波版本（例如安全文档上的图像照片））导出的内容签名组合。 该组合形成嵌入在主媒体对象中的新的数字水印信号。 为了验证对象，提取数字水印有效负载并将其与关于对象的数据进行比较。 还评估组合的数字水印和内容签名以对媒体对象上的媒体信号进行认证。

    Digital watermarking methods and related toy and game applications
    8.
    发明授权
    Digital watermarking methods and related toy and game applications 有权
    数字水印方法及相关玩具及游戏应用

    公开(公告)号：US07502759B2

    公开(公告)日：2009-03-10

    申请号：US10139147

    申请日：2002-05-02

    申请人： Brett T. Hannigan ,  Ravi K. Sharma ,  Stephen K. Decker ,  Phillip Andrew Seder ,  Tony F. Rodriguez ,  Andrew Klonsky

    发明人： Brett T. Hannigan ,  Ravi K. Sharma ,  Stephen K. Decker ,  Phillip Andrew Seder ,  Tony F. Rodriguez ,  Andrew Klonsky

    IPC分类号： G06F17/00

    CPC分类号： G06T1/0021 ,  A63H3/28 ,  A63H2200/00 ,  G06Q30/02 ,  G06T2201/0051 ,  G06T2201/0052 ,  G06T2201/0061 ,  G06T2201/0601 ,  G09B5/06 ,  H04N1/00127

    摘要： The present invention relates to toys and game applications that are enhanced with digital watermarks. In one embodiment, a character card includes a unique identifier in the form of a digital watermark. The identifier is used to link to a database record, which can be updated to reflect changes in game attributes. Some such game attributes include life, character type and name, health, strength, and power levels. The data record can be updated or modified to reflect changes in attributes due to activity or events during a computer software game. The database record can be used by the computer software game to alter or enhance the game. In another embodiment, a toy interacts with toy components or cards via digital watermarks. Digital watermarks enhance games, toys and books in still other embodiments.

    摘要翻译： 本发明涉及用数字水印增强的玩具和游戏应用。 在一个实施例中，字符卡包括数字水印形式的唯一标识符。 标识符用于链接到可以更新的数据库记录，以反映游戏属性的变化。 一些这样的游戏属性包括生命，字符类型和名称，健康，力量和功率水平。 可以更新或修改数据记录以反映由于计算机软件游戏期间的活动或事件而导致的属性变化。 计算机软件游戏可以使用数据库记录来改变或增强游戏。 在另一个实施例中，玩具通过数字水印与玩具组件或卡相互作用。 在其他实施例中，数字水印增强游戏，玩具和书籍。