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Unformatted text preview: arios. Approaches
Approaches cont.. The degree of brightness of the diacritic marks
repeated 1, 2, 3, 4 and 5 times each
The ratios of usable characters for hiding both binary
levels according to the three studied approaches
Approach Avg Dots 0.3689 Kashidah-Before 0.3676 Kashidah-After 0.2056 Diacritics 0.3633 12 Remarks
• The text and image approaches are discussed which
are used to hide information in Arabic diacritics for
• This work presents a variety of scenarios that may
achieve up to arbitrary capacities. Sometimes tradeoffs
between capacity, security and robustness imply that a
particular scenario should be chosen.
• The overhead of using diacritics was, experimentally,
shown very comparable to related works.
• The advantage of the method is that such overhead
decreases if more than one diacritical secret bit is used
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- Spring '00