Toward Optimal Embedding Capacity for Permutation Steganography.

Autor: Nien-Ching Huang, Meng-Tsan Li, Chung-Ming Wang
Předmět:
Zdroj: IEEE Signal Processing Letters; Sep2009, Vol. 16 Issue 9, p802-805, 4p, 3 Diagrams, 2 Charts, 1 Graph
Abstrakt: Bogomjakov et al. proposed a universal algorithm for permutation steganography. In this paper, we introduce a more effective algorithm. A theoretical analysis indicates that our algorithm achieves 99 % of optimal when using 128 elements, while Bogomjakov et al.'s method attains only 98.34% of optimal even when employing as many as 1,048,576 elements. We conducted an experiment using a 3-D polygon dataset for comparison. The analysis and practical experiments demonstrate that our algorithm attains a capacity closer to the optimal but has the same runtime complexity as Bogomjakov et al.'s algorithm. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index