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    • 11. 发明授权
    • Digital watermark detecting device and method thereof
    • 数字水印检测装置及其方法
    • US07599517B2
    • 2009-10-06
    • US11337806
    • 2006-01-24
    • Nakaba KogureTomoo Yamakage
    • Nakaba KogureTomoo Yamakage
    • G06K9/00
    • G06T1/0064G06T2201/0052G06T2201/0083
    • 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.
    • 提供一种数字水印检测装置,可以在不增加计算量和电路规模的情况下,精确地检测由诸如图像切出,缩放等的攻击而削弱的水印信息。 数字水印检测装置包括从水印嵌入图像提取特定频率分量的信号的提取器10,用于计算提取信号的正交变换图像和水印的正交变换图像的第一正交变换器11A,11B 嵌入图像,幅度调节器12A,12B,用于根据两个正交变换图像的幅度分量之间的差异来调整两个正交变换图像的振幅;合成器13,用于将两个经调幅的正交变换 图像,用于使复合信号进行正交变换以实现第二正交变换信号的第二正交变换器14,以及用于基于出现在第二正交变换信号中的峰值来估计水印信息的估计器15。
    • 15. 发明授权
    • Texture image compressing device and method, texture image decompressing device and method, data structures and storage medium
    • 纹理图像压缩装置和方法,纹理图像解压缩装置和方法,数据结构和存储介质
    • US07583846B2
    • 2009-09-01
    • US12078586
    • 2008-04-02
    • Yasunobu YamauchiShingo YanagawaMasahiro SekineTakeshi NagaiHideyuki UenoNakaba Kogure
    • Yasunobu YamauchiShingo YanagawaMasahiro SekineTakeshi NagaiHideyuki UenoNakaba Kogure
    • G06K9/36
    • G06T9/001G06T15/04G06T15/205
    • A texture image compressing device includes a separating unit configured to separate intensity maps that include intensity values and light source-independent texture images, those images including color components from a plurality of texture images corresponding to a plurality of different light source directions and a plurality of different viewpoint directions. The device also includes an intensity map compressing unit configured to compress the intensity maps to generate compressed intensity maps and representative intensity maps that are codebooks of the compressed intensity maps, a light source-independent texture image compressing unit configured to compress the light source-independent texture images to generate light source-independent texture compressed images and color component conversion tables that are codebooks of the light source-independent texture compressed images, and a compressed texture generating unit configured to generate compressed textures by combining the compressed intensity maps, the representative intensity maps, the light source-independent texture compressed images and the color component conversion tables.
    • 纹理图像压缩装置包括:分离单元,其被配置为分离强度图,所述强度图包括强度值和与光源无关的纹理图像,所述图像包括来自对应于多个不同光源方向的多个纹理图像的颜色分量;以及多个 视点方向不同 该装置还包括强度图压缩单元,其被配置为压缩强度图以产生作为压缩强度图的码本的压缩强度图和代表性强度图,与光源无关的纹理图像压缩单元,被配置为压缩光源独立 纹理图像以产生与光源无关的纹理压缩图像的码本的光源独立纹理压缩图像和颜色分量转换表;以及压缩纹理生成单元,被配置为通过组合压缩强度图来生成压缩纹理,代表强度 地图,光源独立纹理压缩图像和颜色分量转换表。
    • 16. 发明授权
    • Texture image compressing device and method, texture image decompressing device and method, data structures and storage medium
    • 纹理图像压缩装置和方法,纹理图像解压缩装置和方法,数据结构和存储介质
    • US07372990B2
    • 2008-05-13
    • US10765122
    • 2004-01-28
    • Yasunobu YamauchiShingo YanagawaMasahiro SekineTakeshi NagaiHideyuki UneoNakaba Kogure
    • Yasunobu YamauchiShingo YanagawaMasahiro SekineTakeshi NagaiHideyuki UneoNakaba Kogure
    • G06K9/36
    • G06T9/001G06T15/04G06T15/205
    • A texture image compressing device includes a separating unit configured to separate intensity maps, including intensity values and light source-independent texture images, those images including color components from a plurality of texture images corresponding to different light source directions and different viewpoint directions. The device includes an intensity map compressing unit configured to compress the intensity maps to generate compressed intensity maps and representative intensity maps that are codebooks of the compressed intensity maps, a light source-independent texture image compressing unit configured to compress the light source-independent texture images to generate light source-independent texture compressed images and color component conversion tables that are codebooks of the light source-independent texture compressed images, and a compressed texture generating unit configured to generate compressed textures by combining the compressed intensity maps, the representative intensity maps, the light source-independent texture compressed images and the color component conversion tables.
    • 纹理图像压缩装置包括分离单元,其被配置为分离强度图,包括强度值和光源独立纹理图像,包括来自对应于不同光源方向和不同视点方向的多个纹理图像的颜色分量的那些图像。 该装置包括:强度图压缩单元,被配置为压缩强度图以产生压缩强度图和作为压缩强度图的码本的代表性强度图;光源独立纹理图像压缩单元,被配置为压缩与光源无关的纹理 图像以产生与光源无关的纹理压缩图像的码本的光源独立纹理压缩图像和颜色分量转换表;以及压缩纹理生成单元,被配置为通过组合压缩强度图,代表性强度图 ,光源独立纹理压缩图像和颜色分量转换表。
    • 19. 发明申请
    • Texture image compressing device and method, texture image decompressing device and method, data structures and storage medium
    • 纹理图像压缩装置和方法,纹理图像解压缩装置和方法,数据结构和存储介质
    • US20080232647A1
    • 2008-09-25
    • US12078586
    • 2008-04-02
    • Yasunobu YamauchiShingo YanagawaMashiro SekineTakeshi NagaiHideyuki UenoNakaba Kogure
    • Yasunobu YamauchiShingo YanagawaMashiro SekineTakeshi NagaiHideyuki UenoNakaba Kogure
    • G06K9/48
    • G06T9/001G06T15/04G06T15/205
    • A texture image compressing device includes a separating unit configured to separate intensity maps that include intensity values and light source-independent texture images, those images including color components from a plurality of texture images corresponding to a plurality of different light source directions and a plurality of different viewpoint directions. The device also includes an intensity map compressing unit configured to compress the intensity maps to generate compressed intensity maps and representative intensity maps that are codebooks of the compressed intensity maps, a light source-independent texture image compressing unit configured to compress the light source-independent texture images to generate light source-independent texture compressed images and color component conversion tables that are codebooks of the light source-independent texture compressed images, and a compressed texture generating unit configured to generate compressed textures by combining the compressed intensity maps, the representative intensity maps, the light source-independent texture compressed images and the color component conversion tables.
    • 纹理图像压缩装置包括:分离单元,其被配置为分离强度图,所述强度图包括强度值和与光源无关的纹理图像,所述图像包括来自对应于多个不同光源方向的多个纹理图像的颜色分量;以及多个 视点方向不同 该装置还包括强度图压缩单元,其被配置为压缩强度图以产生作为压缩强度图的码本的压缩强度图和代表性强度图,与光源无关的纹理图像压缩单元,被配置为压缩光源独立 纹理图像以产生与光源无关的纹理压缩图像的码本的光源独立纹理压缩图像和颜色分量转换表;以及压缩纹理生成单元,被配置为通过组合压缩强度图来生成压缩纹理,代表强度 地图,光源独立纹理压缩图像和颜色分量转换表。