发明名称 |
Methods and apparatus for lossless data hiding |
摘要 |
Methods and apparatus are provided for subjecting an original, pixel domain image to an Integer Wavelet Transform (IWT) to obtain a matrix of wavelet coefficients; selecting at least one bit plane between a least significant bit plane and a most significant bit plane of the matrix of wavelet coefficients; compressing the at least one selected bit plane to produce free space in the at least one selected bit plane; embedding hidden data in the free space of the at least one compressed bit plane; and subjecting the at least one embedded bit plane to an Inverse IWT to produce a marked pixel domain image. Methods and apparatus are also provided for reversing this process.
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申请公布号 |
US2006126890(A1) |
申请公布日期 |
2006.06.15 |
申请号 |
US20030737327 |
申请日期 |
2003.12.16 |
申请人 |
SHI YUN-QING;XUAN GUORONG |
发明人 |
SHI YUN-QING;XUAN GUORONG |
分类号 |
G06K9/00;G06K9/46 |
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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