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1.发明授权
公开(公告)号：EP1695539B1
公开(公告)日：2018-07-18
申请号：EP04812873.0
申请日：2004-12-03
发明人： SHI, Yun-Qing , ZOU, Dekun , NI, Zhi-Cheng
IPC分类号： H04N19/48 , H04N19/467 , G06T1/00 , H04N1/32 , H04N21/835 , H04N21/254
CPC分类号： H04N19/46 , G06T1/0028 , G06T1/0057 , G06T2201/0051 , G06T2201/0052 , G06T2201/0061 , G06T2201/0083 , G06T2201/0203 , H04N1/32154 , H04N1/3217 , H04N19/467 , H04N21/2541 , H04N21/835
摘要： A method is provided which comprises providing a block of IWT (integer wavelet transform) coefficients for preferably one high frequency sub-band of an image; determining a mean value of said coefficients within said block; and establishing an encoded mean value to embed one of a logical-0 bit value and a logical-1 bit into said first block.
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公开(公告)号：EP1971961A1
公开(公告)日：2008-09-24
申请号：EP06718417.6
申请日：2006-01-13
发明人： ZOU, Dekun , SHI, Yun-Qing
IPC分类号： G06K9/62
CPC分类号： G06T1/0021
摘要： Briefly, in accordance with one embodiment, a method of identifying marked content is described.
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3.发明公开SYSTEM AND METHOD FOR ROBUST LOSSLESS DATA HIDING AND RECOVERING FROM THE INTEGER WAVELET REPRESENTATION 有权对于可靠的数据丢失地段隐藏和关闭系统和方法恢复整数WAVELETREPRÄSENTATION
公开(公告)号：EP1695539A2
公开(公告)日：2006-08-30
申请号：EP04812873.0
申请日：2004-12-03
发明人： SHI, Yun-Qing , ZOU, Dekun , NI, Zhi-Cheng
IPC分类号： H04N1/00
CPC分类号： H04N19/46 , G06T1/0028 , G06T1/0057 , G06T2201/0051 , G06T2201/0052 , G06T2201/0061 , G06T2201/0083 , G06T2201/0203 , H04N1/32154 , H04N1/3217 , H04N19/467 , H04N21/2541 , H04N21/835
摘要： A method is provided which comprises providing a block of IWT (integer wavelet transform) coefficients for preferably one high frequency sub-band of an image; determining a mean value of said coefficients within said block; and establishing an encoded mean value to embed one of a logical-0 bit value and a logical-1 bit into said first block.
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