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    IMAGE ENCODING APPARATUS AND METHOD FOR THE SAME AND IMAGE DECODING APPARATUS AND METHOD FOR THE SAME
    1.
    发明申请
    IMAGE ENCODING APPARATUS AND METHOD FOR THE SAME AND IMAGE DECODING APPARATUS AND METHOD FOR THE SAME 有权
    图像编码装置及其相关方法和图像解码装置及其相关方法

    公开(公告)号：US20110262037A1

    公开(公告)日：2011-10-27

    申请号：US13023018

    申请日：2011-02-08

    申请人： Naoya OHNISHI ,  Tomoo Yamakage ,  Tomoya Kodama ,  Hiroaki Fukui

    发明人： Naoya OHNISHI ,  Tomoo Yamakage ,  Tomoya Kodama ,  Hiroaki Fukui

    IPC分类号： G06K9/36

    CPC分类号： H04N19/40 ,  H04N19/184 ,  H04N19/61

    摘要： In one embodiment, an image encoding apparatus converts bit depth of an input image formed of a plurality of pixels each having an N bit depth into an (N+M) bit depth larger than N bit depth by M bits. An adaptive bit depth converter converts the bit depth of each pixel of the decoded image of the (N+M) bits into the N bits selectively using one of a plurality of conversion systems. The converted image of the N bit depth is stored in a frame memory as a reference image. The bit depth of each pixel of the reference image of the N bit depth read out from the frame memory is converted into the (N+M) bit depth larger than the N bit depth by M bits in accordance with the conversion system by a pixel bit depth inverse converter.

    摘要翻译： 在一个实施例中，图像编码装置将由具有N比特深度的多个像素形成的输入图像的比特深度转换为大于N比特深度（N + M）比特深度M比特。 自适应位深度转换器使用多个转换系统之一选择性地将（N + M）位的解码图像的每个像素的比特深度转换成N比特。 将N位深度的转换图像作为参考图像存储在帧存储器中。 从帧存储器读出的N比特深度的参考图像的每个像素的比特深度根据转换系统被转换成比N比特深度大的比特深度M比特 位深度逆变换器。

    Image encoding apparatus and method for the same and image decoding apparatus and method for the same
    2.
    发明授权
    Image encoding apparatus and method for the same and image decoding apparatus and method for the same 有权
    图像编码装置及其相同方法及图像解码装置及其方法

    公开(公告)号：US08559734B2

    公开(公告)日：2013-10-15

    申请号：US13023018

    申请日：2011-02-08

    申请人： Naoya Ohnishi ,  Tomoo Yamakage ,  Tomoya Kodama ,  Hiroaki Fukui

    发明人： Naoya Ohnishi ,  Tomoo Yamakage ,  Tomoya Kodama ,  Hiroaki Fukui

    IPC分类号： G06K9/36

    CPC分类号： H04N19/40 ,  H04N19/184 ,  H04N19/61

    摘要： In one embodiment, an image encoding apparatus converts bit depth of an input image formed of a plurality of pixels each having an N bit depth into an (N+M) bit depth larger than N bit depth by M bits. An adaptive bit depth converter converts the bit depth of each pixel of the decoded image of the (N+M) bits into the N bits selectively using one of a plurality of conversion systems. The converted image of the N bit depth is stored in a frame memory as a reference image. The bit depth of each pixel of the reference image of the N bit depth read out from the frame memory is converted into the (N+M) bit depth larger than the N bit depth by M bits in accordance with the conversion system by a pixel bit depth inverse converter.

    摘要翻译： 在一个实施例中，图像编码装置将由具有N比特深度的多个像素形成的输入图像的比特深度转换为大于N比特深度（N + M）比特深度M比特。 自适应位深度转换器使用多个转换系统之一选择性地将（N + M）位的解码图像的每个像素的比特深度转换成N比特。 将N位深度的转换图像作为参考图像存储在帧存储器中。 从帧存储器读出的N比特深度的参考图像的每个像素的比特深度根据转换系统被转换成比N比特深度大的比特深度M比特 位深度逆变换器。

    DIGITAL WATERMARK EMBEDDING APPARATUS AND DIGITAL WATERMARK DETECTING APPARATUS
    7.
    发明申请
    DIGITAL WATERMARK EMBEDDING APPARATUS AND DIGITAL WATERMARK DETECTING APPARATUS 失效
    数字水印嵌入式设备和数字水印检测设备

    公开(公告)号：US20090089585A1

    公开(公告)日：2009-04-02

    申请号：US12235196

    申请日：2008-09-22

    申请人： Nakada Kogure ,  Tomoo Yamakage

    发明人： Nakada Kogure ,  Tomoo Yamakage

    IPC分类号： H04L9/00

    CPC分类号： H04N1/32149 ,  G06T1/0071 ,  G06T2201/0052 ,  G06T2201/0064 ,  G06T2201/0065 ,  H04N1/32304 ,  H04N1/32352 ,  H04N2201/3233 ,  H04N2201/3239 ,  H04N2201/327

    摘要： A digital watermark embedding apparatus includes: an extractor configured to extract a specific frequency component from each of N kinds of scaled images about an input image signal to generate N kinds of extracted signals; a generator configured to compress the amplitude of the respective extracted signals on the basis of N kinds of to-be-embedded information corresponding to the N kinds of extracted signals to generate watermark image signals by shifting the predetermined phases; and a superimposer configured to add the N kinds of watermark image signals to the input image signal to generate an output image signal.

    摘要翻译： 数字水印嵌入装置包括：提取器，被配置为从关于输入图像信号的N种缩放图像中的每一个提取特定频率分量，以产生N种提取的信号; 发生器，其被配置为基于与N种提取的信号相对应的N种待嵌入信息来压缩各个提取信号的幅度，以通过移动预定相位来生成水印图像信号; 以及重叠器，被配置为将N种水印图像信号添加到输入图像信号以生成输出图像信号。

    Digital watermark detecting device and method thereof
    10.
    发明申请
    Digital watermark detecting device and method thereof 失效

    公开(公告)号：US20060204030A1

    公开(公告)日：2006-09-14

    申请号：US11337806

    申请日：2006-01-24

    申请人： Nakaba Kogure ,  Tomoo Yamakage

    发明人： Nakaba Kogure ,  Tomoo Yamakage

    IPC分类号： G06K9/00 ,  H04L9/00 ,  G06K9/36

    CPC分类号： G06T1/0064 ,  G06T2201/0052 ,  G06T2201/0083

    摘要： There is provided a digital watermarking detecting device that can accurately detect watermarking information weakened by an attack such as image cut-out, scaling or the like without increasing a calculation amount and a circuit scale. The digital watermarking detecting device includes an extractor 10 for extracting a signal of a specific frequency component from a watermarking embedded image, first orthogonal transformers 11A, 11B for calculating an orthogonally-transformed image of an extraction signal and an orthogonally-transformed image of a watermarking embedded image, amplitude adjusters 12A, 12B for adjusting the amplitudes of the two orthogonally-transformed images in accordance with the difference between the amplitude components of the two orthogonally-trans formed images, a compositor 13 for combining the two amplitude-adjusted orthogonally-transformed images, a second orthogonally-transformer 14 for subjecting the composite signal to orthogonal transformation to achieve a second orthogonally-transformed signal, and an estimator 15 for estimating the watermarking information on the basis of a peak appearing in the second orthogonally-transformed signal.