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19 % correct bad hyphenation here
20 \hyphenation{op-tical net-works semi-conduc-tor}
32 a lightweight %stego-secure
33 edge-based steganographic approach}
44 \author{Jean-Fran\c cois Couchot, Raphael Couturier, and Christophe Guyeux*\\
45 $*:$ Authors in alphabetic order.\\
46 FEMTO-ST Institute, UMR 6174 CNRS\\
47 Computer Science Laboratory DISC,
48 University of Franche-Comt\'{e},
51 %\authorrunning{J.-F. Couchot, R. Couturier, and C. Guyeux}
53 %\mail{jean-francois.couchot@femto-st.fr}
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62 %IEEEtran, journal, \LaTeX, paper, template.
63 %\keywords{Steganography, least-significant-bit (LSB)-based steganography, edge detection, Canny filter, security, syndrome trellis codes}
77 A novel steganographic method called STABYLO is introduced in
79 Its main advantage is to be much lighter than the so-called
80 Highly Undetectable steGO (HUGO) scheme, a well-known state of the art
81 steganographic process in the spatial domain.
82 Additionally to this effectiveness,
83 quite comparable results through noise measures like PSNR-HVS-M,
84 and weighted PSNR (wPSNR) are obtained.
85 To achieve the proposed goal, famous experimented
86 components of signal processing,
87 coding theory, and cryptography are combined together, leading to
88 a scheme that can reasonably face up-to-date steganalysers.
96 \section{Introduction}\label{sec:intro}
100 \section{Presentation of the Proposed Approach}\label{sec:ourapproach}
101 \input{ourapproach.tex}
103 \section{Experiments}\label{sec:experiments}
107 \section{Conclusion}\label{sec:concl}
109 The STABYLO algorithm, whose acronym means STeganography
110 with cAnny, Bbs, binarY embedding at LOw cost, has been introduced
111 in this document as an efficient method having comparable, though
112 somewhat smaller, security than the well-known
113 Highly Undetectable steGO (HUGO) steganographic scheme.
114 This edge-based steganographic approach embeds a Canny
115 detection filter, the Blum-Blum-Shub cryptographically secure
116 pseudorandom number generator, together with Syndrome-Trellis Codes
117 for minimizing distortion.
118 After having introduced with details the proposed method,
119 we have evaluated it through noise measures (namely, the PSNR, PSNR-HVS-M,
120 BIQI, and weighted PSNR) and we have used well-established steganalysers.
122 % Of course, other detectors like the fuzzy edge methods
123 % deserve much further attention, which is why we intend
124 % to investigate systematically all of these detectors in our next work.
129 For future work, the authors' intention is to investigate systematically
130 all the existing edge detection methods, to see if the STABYLO evaluation scores can
131 be improved by replacing Canny with another edge filter.
133 % to take into account the least significant bits too during all the
134 % stages of the algorithm, hoping by doing so to be closer to the HUGO scores against
136 Other steganalysers than the ones used in this document will be
137 examined for the sake of completeness. Finally, the
138 systematic replacement of all the LSBs of edges by binary digits provided
139 by the BBS generator will be investigated, and the consequences of such a
140 replacement, in terms of security, will be discussed.
141 Furthermore, we plan to investigate information hiding on other models, such as high frequency for JPEG encoding.
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