Image analysis – Applications
Reexamination Certificate
2008-04-07
2010-11-02
Bhatnagar, Anand (Department: 2624)
Image analysis
Applications
C382S232000
Reexamination Certificate
active
07826638
ABSTRACT:
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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Shi Yun Qing
Xuan Guorong
Allison Andrae S
Bhatnagar Anand
Connolly Bove & Lodge & Hutz LLP
New Jersey Institute of Technology
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