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Title |
JPEG Quantization-Distribution Steganalytic Method Attacking JSteg |
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Author |
Quan Weiwei, Guo Yanqing, Kong Xiangwei |
| Citation |
Vol. 6 No. 7 pp. 192-195 |
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Abstract |
JPEG Image steganalysis has attracted great attention recently. In this paper, JPEG quantization-distribution steganalytic method against JSteg using JPEG Quantization Steps is proposed. By deducing the distribution relation of DCT coefficients before and after quantization in AC channel individually, and investigating the effect of quantization steps on such relation, we present a new method to detect the changes of statistical features derived from JSteg. Experimental results show that our approach can not only estimate the amount of hidden messages exactly, but also achieve a high degree of adaptivity. |
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Keywords |
DCT, coefficient distribution, JPEG, quantization, steganalysis |
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