Description: Many steganographic systems are weak against visual and
statistical attacks. Systems without these weaknesses offer only a relatively
small capacity for steganographic messages. The newly developed
algorithm F5 withstands visual and statistical attacks, yet it still offers
a large steganographic capacity. F5 implements matrix encoding to
improve the efficiency of embedding. Thus it reduces the number of necessary
changes. F5 employs permutative straddling to uniformly spread
out the changes over the whole steganogram.
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