tailieunhanh - Báo cáo hóa học: " Review Article Reversible Watermarking Techniques: An Overview and a Classification"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Review Article Reversible Watermarking Techniques: An Overview and a Classification | Hindawi Publishing Corporation EURASIP Journal on Information Security Volume 2010 Article ID 134546 19 pages doi 2010 134546 Review Article Reversible Watermarking Techniques An Overview and a Classification Roberto Caldelli Francesco Filippini and Rudy Becarelli MICC University of Florence Viale Morgagni 65 50134 Florence Italy Correspondence should be addressed to Roberto Caldelli Received 23 December 2009 Accepted 17 May 2010 Academic Editor Jiwu W. Huang Copyright 2010 Roberto Caldelli et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. An overview of reversible watermarking techniques appeared in literature during the last five years approximately is presented in this paper. In addition to this a general classification of algorithms on the basis of their characteristics and of the embedding domain is given in order to provide a structured presentation simply accessible for an interested reader. Algorithms are set in a category and discussed trying to supply the main information regarding embedding and decoding procedures. Basic considerations on achieved results are made as well. 1. Introduction Digital watermarking techniques have been indicated so far as a possible solution when in a specific application scenario authentication copyright protection fingerprinting etc. there is the need to embed an informative message in a digital document in an imperceptible way. Such a goal is basically achieved by performing a slight modification to the original data trying to at the same time satisfy other bindings such as capacity and robustness. What is important to highlight beyond the way all these issues are achieved it is that this slight modification is irreversible the watermarked content is different from the original one. This means that any successive assertion .