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1.发明公开METHODS AND APPARATUS FOR REVERSIBLE DATA HIDING THROUGH HISTOGRAM MODIFICATION 有权方法和装置可逆数据隐藏BY直方图修改
公开(公告)号：EP1665123A2
公开(公告)日：2006-06-07
申请号：EP04750047.5
申请日：2004-04-12
发明人： SHI, Yun-Qing , NI, Zhi-Cheng , ANSARI, Nirwan
IPC分类号： G06K9/00
CPC分类号： G06T1/0092 , G06T1/0028 , G06T2201/0051 , G06T2201/0203 , H04N1/32208 , H04N1/32251
摘要： Methods and apparatus are provided for encoding (118) a pixel domain image with hidden data (120) by modifying the histogram (112) of the pixel domain image to make space for such hidden data.
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2.发明授权METHODS AND APPARATUS FOR REVERSIBLE DATA HIDING THROUGH HISTOGRAM MODIFICATION 有权方法和装置可逆数据隐藏BY直方图修改
公开(公告)号：EP1665123B1
公开(公告)日：2011-05-18
申请号：EP04750047.5
申请日：2004-04-12
发明人： SHI, Yun-Qing , NI, Zhi-Cheng , ANSARI, Nirwan
IPC分类号： G06T1/00
CPC分类号： G06T1/0092 , G06T1/0028 , G06T2201/0051 , G06T2201/0203 , H04N1/32208 , H04N1/32251
摘要： Methods and apparatus are provided for encoding (118) a pixel domain image with hidden data (120) by modifying the histogram (112) of the pixel domain image to make space for such hidden data.
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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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4.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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5.发明公开SYSTEM AND METHOD FOR ROBUST REVERSIBLE DATA HIDING AND DATA RECOVERY IN THE SPATIAL DOMAIN 审中-公开系统和方法在空间域鲁棒可逆数据隐藏和数据恢复
公开(公告)号：EP1692637A2
公开(公告)日：2006-08-23
申请号：EP04817942.8
申请日：2004-12-03
发明人： SHI, Yun-Qing , NI, Zhi-Cheng , ANSARI, Nirwan
IPC分类号： G06K1/00
CPC分类号： H04N19/467 , G06T1/0028 , G06T1/005 , G06T2201/0051 , G06T2201/0061 , G06T2201/0065 , G06T2201/0203 , H04N1/32208 , H04N1/32251 , H04N1/32309 , H04N5/913 , H04N19/63 , H04N21/2541 , H04N21/4405 , H04N21/835 , H04N21/8358 , H04N2005/91307 , H04N2201/3281 , H04N2201/3284
摘要： A method including identifying at least two subsets of pixels within a block of an image; forming a plurality of pixel groups from the at least two subsets of pixels, each pixel group having at least one pixel from a first of the at least two subsets and at least one pixel from a second of the at least two subsets; producing a plurality of difference values, each pixel group providing one of said difference values, each difference value being based on differences between pixel values of pixels within one of the pixel groups; and modifying pixel values of pixels in less than all of the at least two subsets, thereby embedding a bit value into the block.
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