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    DIGITAL WATERMARK EMBEDDING APPARATUS, DIGITAL WATERMARK EMBEDDING METHOD, AND DIGITAL WATERMARK DETECTION APPARATUS
    4.
    发明申请
    DIGITAL WATERMARK EMBEDDING APPARATUS, DIGITAL WATERMARK EMBEDDING METHOD, AND DIGITAL WATERMARK DETECTION APPARATUS 有权
    数字水印嵌入式设备，数字水印嵌入方法和数字水印检测设备

    公开(公告)号：US20120163653A1

    公开(公告)日：2012-06-28

    申请号：US13331220

    申请日：2011-12-20

    申请人： Taizo ANAN ,  Kensuke Kuraki ,  Shohei Nakagata

    发明人： Taizo ANAN ,  Kensuke Kuraki ,  Shohei Nakagata

    IPC分类号： G06K9/00

    CPC分类号： H04N19/467 ,  G06T1/0021 ,  G06T1/0085 ,  G06T2201/0051 ,  G06T2201/0061 ,  H04N21/8358

    摘要： A digital watermark embedding apparatus includes an interface unit which acquires video data and digital watermark information, and a processing unit which embeds the digital watermark information into the video data. The processing unit is adapted to cause the area of a watermark pattern formed by a plurality of pixels having a prescribed value, and superimposed on each image contained in the video data, to vary in periodic fashion over time according to the value of a symbol contained in the digital watermark information, and correct, using the prescribed value, the value of each pixel contained in a region where each image in the video data and the watermark pattern corresponding to that image overlap each other.

    摘要翻译： 数字水印嵌入装置包括：获取视频数据和数字水印信息的接口单元;以及将数字水印信息嵌入到视频数据中的处理单元。 处理单元适于使由具有规定值的多个像素形成的水印图案的区域，并且叠加在视频数据中包含的每个图像上，根据包含的符号的值，以周期性方式随时间变化 在数字水印信息中，并且使用规定值来校正包含在视频数据中的每个图像和与该图像相对应的水印图案的区域中的每个像素的值彼此重叠。

    Motion vector encoding device and decoding device
    5.
    发明授权
    Motion vector encoding device and decoding device 有权
    运动矢量编码装置和解码装置

    公开(公告)号：US08184708B2

    公开(公告)日：2012-05-22

    申请号：US12470095

    申请日：2009-05-21

    申请人： Akira Nakagawa ,  Taizo Anan ,  Eishi Morimatsu ,  Takashi Itoh

    发明人： Akira Nakagawa ,  Taizo Anan ,  Eishi Morimatsu ,  Takashi Itoh

    IPC分类号： H04N7/12

    CPC分类号： H04N19/00587 ,  H04N19/105 ,  H04N19/12 ,  H04N19/13 ,  H04N19/137 ,  H04N19/15 ,  H04N19/176 ,  H04N19/51 ,  H04N19/513 ,  H04N19/52 ,  H04N19/61

    摘要： A prediction error generating unit generates a predictive vector from the motion vectors of a plurality of adjacent blocks, and obtains a difference from a target vector. A plurality of variable-length coding units respectively encode the output of the prediction error generating unit with different encoding methods. A determining unit estimates the accuracy of the predictive vector generated by the prediction error generating unit based on the degrees of non-uniformity of the motion vectors of the plurality of adjacent blocks. A selecting unit selects one of the encoding results obtained by the plurality of variable-length coding units.

    摘要翻译： 预测误差生成单元从多个相邻块的运动矢量生成预测矢量，并且从目标矢量获得差。 多个可变长度编码单元分别以不同的编码方式编码预测误差生成单元的输出。 确定单元基于多个相邻块的运动矢量的不均匀度来估计由预测误差生成单元生成的预测矢量的精度。 选择单元选择由多个可变长度编码单元获得的编码结果之一。

    IMAGE MARKER ATTACHING APPARATUS AND METHOD
    7.
    发明申请
    IMAGE MARKER ATTACHING APPARATUS AND METHOD 有权
    图像标记附件和方法

    公开(公告)号：US20100158383A1

    公开(公告)日：2010-06-24

    申请号：US12637256

    申请日：2009-12-14

    申请人： Kensuke KURAKI ,  Shohei Nakagata ,  Jun Takahashi ,  Taizo Anan

    发明人： Kensuke KURAKI ,  Shohei Nakagata ,  Jun Takahashi ,  Taizo Anan

    IPC分类号： G06K9/46

    CPC分类号： G06T11/60 ,  G06K7/1439 ,  G09C5/00

    摘要： A marker attaching apparatus attaches to an image a positioning marker for detecting a specific area in the image, and includes: an area size detection unit detecting a size of an area to which the positioning marker is attached; a marker adjustment unit adjusting the positioning marker depending on the detected size of the area; and a marker attaching unit attaching the adjusted positioning marker to the image.

    摘要翻译： 标记附着装置将图像附着到用于检测图像中的特定区域的定位标记，并且包括：区域尺寸检测单元，其检测定位标记附着的区域的大小; 标记调整单元，根据检测到的区域大小调整定位标记; 以及将调整后的定位标记附着到图像上的标记附着单元。

    IMAGE ENCRYPTION APPARATUS AND IMAGE DECRYPTION APPARATUS
    8.
    发明申请
    IMAGE ENCRYPTION APPARATUS AND IMAGE DECRYPTION APPARATUS 审中-公开
    图像加密装置和图像分解装置

    公开(公告)号：US20090214033A1

    公开(公告)日：2009-08-27

    申请号：US12338218

    申请日：2008-12-18

    申请人： Shohei Nakagata ,  Taizo Anan ,  Kensuke Kuraki ,  Jun Takahashi

    发明人： Shohei Nakagata ,  Taizo Anan ,  Kensuke Kuraki ,  Jun Takahashi

    IPC分类号： H04L9/14 ,  H04L9/00 ,  H04L9/16

    CPC分类号： H04N1/4486 ,  G09C5/00 ,  H04L9/088 ,  H04N1/4413 ,  H04N1/4426

    摘要： Area data indicating an encryption area of image data and level data indicating an authority level for the encryption area are received. Upon being triggered by an input password, an encryption key is generated for each received authority level. Check data to be detected in verifying whether or not the encrypted image data in the encryption area is appropriately decrypted through decryption is implanted in the encryption area. Image encryption is performed on the encryption area where the check data is implanted, by using the encryption key corresponding to the authority level designated for the encryption area. In decryption, all decryption keys corresponding to all authority levels lower than or equal to the set authority level are used to decrypt each encryption area and determines whether or not an appropriate decryption has been performed on the basis of the result of the detection of the check data.

    摘要翻译： 接收表示图像数据的加密区域和指示加密区域的权限级别的级数据的区域数据。 由输入密码触发时，会为每个接收到的权限级别生成加密密钥。 在验证加密区域中的加密图像数据是否通过解密适当地解密时，检查要检测的数据被植入加密区域。 通过使用与为加密区域指定的授权级别相对应的加密密钥，在植入了检查数据的加密区域上执行图像加密。 在解密中，使用与所设置的权限级别以下的所有权限级别相对应的所有解密密钥来解密每个加密区域，并根据检查结果确定是否已经执行了适当的解密 数据。