发明名称 |
System and method for reversible data hiding based on integer wavelet spread spectrum |
摘要 |
A system and method are disclosed which may include subjecting an original, pixel domain image to an Integer Wavelet Transform (IWT) to obtain a matrix of IWT coefficients; selecting a plurality of the IWT coefficients for incorporation of information therein; and setting signs for the plurality of selected IWT coefficients according to bit values of a plurality of respective data bits. The system and method can also include subjecting a marked pixel domain image to an Integer Wavelet Transform to obtain a matrix of wavelet coefficients; selecting a plurality of the coefficients from the matrix that contain embedded information; and for each selected coefficient, extracting the data bit embedded in the coefficient, a bit value of the extracted data bit determined based on a sign of the coefficient.
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申请公布号 |
US7706566(B2) |
申请公布日期 |
2010.04.27 |
申请号 |
US20050068063 |
申请日期 |
2005.02.28 |
申请人 |
NEW JERSEY INSTITUTE OF TECHNOLOGY |
发明人 |
SHI YUN-QING;XUAN GUORONG |
分类号 |
G06K9/00;G06K9/36;G06T1/00;H04N1/32;H04N7/26 |
主分类号 |
G06K9/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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