30-08-2017, 04:12 PM
Many steganographic systems are weak against visual and statistical attacks. Systems without these weaknesses only offer a relatively small capacity for steganographic messages. The new F5 algorithm resists visual and statistical attacks, but still offers a large steganographic capability. F5 implements array encoding to improve fouling efficiency. This reduces the number of changes required. F5 employs the permutative straddling to uniformly separate the changes on the entire steganogram.