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    • 4. 发明授权
    • Image-processing apparatus and method
    • 图像处理装置和方法
    • US07583850B2
    • 2009-09-01
    • US11017883
    • 2004-12-22
    • Hisashi InoueKenichi NoridomiMasataka Ejima
    • Hisashi InoueKenichi NoridomiMasataka Ejima
    • G06K9/36
    • G06T1/0057G06T2201/0052G06T2201/0053
    • A bit stream is decoded to generate first quantized DCT-coefficients. The first quantized DCT-coefficients are inversely quantized using a first quantization table, thereby generating DCT-coefficients. The resulting DCT-coefficients are quantized using a second quantization table, thereby generating second quantized DCT-coefficients. Elements in the second quantization table are smaller in value than those in the first quantization table. Predetermined additional information is embedded into the second quantized DCT-coefficients. The second quantized DCT-coefficients having the additional information embedded therein are encoded to produce a bit stream having the additional information embedded therein. The second quantization table is set to be smaller in value than the first quantization table.
    • 解码比特流以产生第一量化DCT系数。 第一量化DCT系数使用第一量化表进行逆量化,从而生成DCT系数。 使用第二量化表量化得到的DCT系数,从而生成第二量化的DCT系数。 第二量化表中的元素的值比第一量化表中的要小。 预定的附加信息被嵌入到第二量化DCT系数中。 具有嵌入其中的附加信息的第二量化DCT系数被编码以产生其中嵌入有附加信息的比特流。 第二量化表被设置为比第一量化表小的值。
    • 5. 发明申请
    • Information-Detecting Apparatus and Method
    • 信息检测装置及方法
    • US20080273627A1
    • 2008-11-06
    • US10582964
    • 2005-10-07
    • Kenichi NoridomiHisashi InoueMasataka Ejima
    • Kenichi NoridomiHisashi InoueMasataka Ejima
    • H04N1/32
    • H04N1/32203H04N1/32208H04N1/32245H04N1/32251H04N1/32288H04N1/3232H04N1/32341
    • An information-detecting apparatus (1) including a receiving unit (3) operable to receive digital data (2) that includes several pieces of element data, in which a change amount is imparted to a value of each of first and second element data among the several pieces of element data, a first selecting unit (4) operable to select, as target data (6), a data set that includes the first and second element data, a second selecting unit (5) operable to select, as neighboring data (7), element data in proximity to each of the first and second element data, a calculating unit (8) operable to calculate, based on both of the target data (6) and the neighboring data (7), the change amount imparted to each of the first and second element data, and a detecting unit (10) operable to detect the additional information in accordance with the change amount.
    • 一种信息检测装置(1),包括:接收单元(3),用于接收数字数据(2),数字数据(2)包括数个元素数据,其中对第一和第二元素数据中的每一个的值赋予变化量 多个元件数据,第一选择单元(4),其可操作以选择作为目标数据(6)的包含第一和第二元件数据的数据组;第二选择单元(5),可操作以选择相邻 数据(7),靠近第一和第二元素数据中的每一个的元素数据;可操作以基于目标数据(6)和相邻数据(7)两者来计算改变量的计算单元(8) 赋予第一和第二元件数据中的每一个;以及检测单元(10),用于根据变化量检测附加信息。
    • 6. 发明申请
    • Device, Method, And Recording Medium For Embedding/Detecting A Digital Watermark
    • 用于嵌入/检测数字水印的设备,方法和记录介质
    • US20080101650A1
    • 2008-05-01
    • US11791838
    • 2005-11-30
    • Masataka EjimaHisashi InoueKenichi Noridomi
    • Masataka EjimaHisashi InoueKenichi Noridomi
    • G06K9/00
    • G06T1/005G06T2201/0051G06T2201/0061G06T2201/0065H04N1/32144
    • Even in the case where a positional misalignment occurs to an embedded digital watermark, accurate detection of watermark information is provided. A digital watermark embedding device includes: a block dividing section (101) for dividing digital data into a plurality of blocks each having a predetermined size; a block selecting section (102) for selecting m blocks (m is an integer no less than 2) from the plurality of the blocks in accordance with a predetermined order; an additional pattern setting section (103) for setting a combination of m additional patterns which are selected from a plurality types of additional patterns, the combination corresponding to one data element to be embedded into the selected m blocks; and an additional pattern embedding section (104) for embedding each of the set additional patterns into each of the selected blocks.
    • 即使在嵌入式数字水印发生位置偏移的情况下,也提供了水印信息的准确检测。 数字水印嵌入装置包括:块分割部(101),用于将数字数据分割成具有预定尺寸的多个块; 用于根据预定顺序从多个块中选择m个块(m是不小于2的整数)的块选择部分(102) 用于设置从多种类型的附加图案中选择的m个附加图案的组合的附加图案设置部分,所述组合对应于要嵌入所选择的m个块中的一个数据元素; 以及附加模式嵌入部分(104),用于将每个所设置的附加模式嵌入每个所选择的块中。
    • 7. 发明授权
    • Device, method, and recording medium for embedding/detecting a digital watermark
    • 用于嵌入/检测数字水印的装置,方法和记录介质
    • US07907747B2
    • 2011-03-15
    • US11791838
    • 2005-11-30
    • Masataka EjimaHisashi InoueKenichi Noridomi
    • Masataka EjimaHisashi InoueKenichi Noridomi
    • G06K9/00H04L9/32
    • G06T1/005G06T2201/0051G06T2201/0061G06T2201/0065H04N1/32144
    • Even in the case where a positional misalignment occurs to an embedded digital watermark, watermark information is accurately detected. A digital watermark embedding device includes a block dividing section for dividing digital data into a plurality of blocks each having a predetermined size, and a block selecting section for selecting m blocks (m is an integer no less than 2) from the plurality of the blocks in accordance with a predetermined order. The device further includes an additional pattern setting section for setting a combination of m additional patterns which are selected from a plurality types of additional patterns, the combination corresponding to one data element to be embedded into the selected m blocks, and an additional pattern embedding section for embedding each of the set additional patterns into each of the selected blocks.
    • 即使在嵌入式数字水印发生位置偏移的情况下,也能够精确地检测出水印信息。 一种数字水印嵌入装置,具有:数字数据分割部,将数字数据分割成多个具有预定尺寸的块;块选择部,从多个块中选择m个块(m为2以上的整数) 按照预定的顺序。 该装置还包括附加模式设置部分,用于设置从多种类型的附加模式中选择的m个附加模式的组合,对应于要嵌入到所选择的m个模块中的一个数据元素的组合,以及附加模式嵌入部分 用于将每个所设置的附加图案嵌入到每个所选择的块中。
    • 8. 发明授权
    • Information-detecting apparatus and method
    • 信息检测装置及方法
    • US07676055B2
    • 2010-03-09
    • US10582964
    • 2005-10-07
    • Kenichi NoridomiHisashi InoueMasataka Ejima
    • Kenichi NoridomiHisashi InoueMasataka Ejima
    • G06K9/00H04B1/66
    • H04N1/32203H04N1/32208H04N1/32245H04N1/32251H04N1/32288H04N1/3232H04N1/32341
    • An information-detecting apparatus (1) including a receiving unit (3) operable to receive digital data (2) that includes several pieces of element data, in which a change amount is imparted to a value of each of first and second element data among the several pieces of element data, a first selecting unit (4) operable to select, as target data (6), a data set that includes the first and second element data, a second selecting unit (5) operable to select, as neighboring data (7), element data in proximity to each of the first and second element data, a calculating unit (8) operable to calculate, based on both of the target data (6) and the neighboring data (7), the change amount imparted to each of the first and second element data, and a detecting unit (10) operable to detect the additional information in accordance with the change amount.
    • 一种信息检测装置(1),包括:接收单元(3),用于接收数字数据(2),数字数据(2)包括数个元素数据,其中对第一和第二元素数据中的每一个的值赋予变化量 多个元件数据,第一选择单元(4),其可操作以选择作为目标数据(6)的包含第一和第二元件数据的数据组;第二选择单元(5),可操作以选择相邻 数据(7),靠近第一和第二元素数据中的每一个的元素数据;可操作以基于目标数据(6)和相邻数据(7)两者来计算改变量的计算单元(8) 赋予第一和第二元件数据中的每一个;以及检测单元(10),用于根据变化量检测附加信息。
    • 9. 发明申请
    • Image-processing apparatus and method
    • 图像处理装置和方法
    • US20050141748A1
    • 2005-06-30
    • US11017883
    • 2004-12-22
    • Hisashi InoueKenichi NoridomiMasataka Ejima
    • Hisashi InoueKenichi NoridomiMasataka Ejima
    • G06T1/00G06K9/00G06K9/36
    • G06T1/0057G06T2201/0052G06T2201/0053
    • A bit stream is decoded to generate first quantized DCT-coefficients. The first quantized DCT-coefficients are inversely quantized using a first quantization table, thereby generating DCT-coefficients. The resulting DCT-coefficients are quantized using a second quantization table, thereby generating second quantized DCT-coefficients. Elements in the second quantization table are smaller in value than those in the first quantization table. Predetermined additional information is embedded into the second quantized DCT-coefficients. The second quantized DCT-coefficients having the additional information embedded therein are encoded to produce a bit stream having the additional information embedded therein. The second quantization table is set to be smaller in value than the first quantization table.
    • 解码比特流以产生第一量化DCT系数。 第一量化DCT系数使用第一量化表进行逆量化,从而生成DCT系数。 使用第二量化表量化得到的DCT系数,从而生成第二量化的DCT系数。 第二量化表中的元素的值比第一量化表中的要小。 预定的附加信息被嵌入到第二量化DCT系数中。 具有嵌入其中的附加信息的第二量化DCT系数被编码以产生其中嵌入有附加信息的比特流。 第二量化表被设置为比第一量化表小的值。