Z
Zhicheng Ni
Researcher at New Jersey Institute of Technology
Publications - 25
Citations - 4051
Zhicheng Ni is an academic researcher from New Jersey Institute of Technology. The author has contributed to research in topics: Information hiding & Digital watermarking. The author has an hindex of 16, co-authored 25 publications receiving 3745 citations.
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Journal ArticleDOI
Reversible data hiding
TL;DR: It is proved analytically and shown experimentally that the peak signal-to-noise ratio of the marked image generated by this method versus the original image is guaranteed to be above 48 dB, which is much higher than that of all reversible data hiding techniques reported in the literature.
Book ChapterDOI
Reversible data hiding
TL;DR: A theoretical proof and numerous experiments show that the PSNR of the marked image generated by this method is always above 48 dB, which is much higher than other reversible data hiding algorithms.
Proceedings ArticleDOI
Lossless data hiding: fundamentals, algorithms and applications
TL;DR: After a careful study of all lossless data hiding algorithms published up to today, the existing algorithms are classified into three categories: Those developed for fragile authentication; those developed aiming at large embedding capacity; and those developed for semi-fragile authentication.
Book ChapterDOI
Lossless data hiding using histogram shifting method based on integer wavelets
TL;DR: The experimental results have demonstrated the superiority of the proposed histogram shifting method over the existing methods, that is, the proposed method has a larger embedding payload in the same visual quality (measured by PSNR (peak signal noise ratio)) or has a higher PSNR in the the same payload.
Journal ArticleDOI
A Semi-Fragile Lossless Digital Watermarking Scheme Based on Integer Wavelet Transform
TL;DR: A new semi-fragile lossless digital watermarking scheme based on integer wavelet transform is presented which takes special measures to prevent overflow/underflow and hence does not suffer from annoying salt-and-pepper noise.