A JPEG-Compression Resistant Adaptive Steganography Based on Relative Relationship between DCT Coefficients

2015 10th International Conference on Availability, Reliability and Security Pub Date : 2015-08-24 DOI:10.1109/ARES.2015.53

Yi Zhang, Xiangyang Luo, Chunfang Yang, Dengpan Ye, Fenlin Liu

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引用次数: 40

Abstract

Current typical adaptive Steganography algorithms cannot extract the embedded secret messages correctly after compression. In order to solve this problem, a JPEG-compression resistant adaptive steganography algorithm is proposed. Utilizing the relationship between DCT coefficients, the domain of messages embedding is determined. The modifying magnitude of different DCT coefficients can be determined according to the quality factors of JPEG compression. To ensure the completely correct extraction of embedded messages after JPEG compression, the RS codes is used to encode the messages to be embedded. Besides, based on the current energy function in the PQe steganography and the distortion function in J-UNIWARD Steganography, the corresponding distortion value of DCT coefficients is calculated. With the help of that, STCs is used to embed the encoded messages into the DCT coefficients, which have a smaller distortion value. The experimental results under different quality factors of JPEG compression and different payloads demonstrate that the proposed algorithm not only has a high correct rate of extracted messages after JPEG compression, which increases from about 60% to nearly 100% comparing with J-UNIWARD steganography under quality factor 75 of JPEG compression, but also has a strong detection resistant performance.

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基于DCT系数相对关系的jpeg抗压缩自适应隐写

目前典型的自适应隐写算法在压缩后不能正确提取嵌入的秘密信息。为了解决这一问题，提出了一种抗jpeg压缩的自适应隐写算法。利用离散余波变换系数之间的关系，确定消息嵌入的域。不同DCT系数的修改幅度可以根据JPEG压缩的质量因素来确定。为了保证JPEG压缩后嵌入消息的提取完全正确，采用RS码对待嵌入消息进行编码。此外，基于PQe隐写中的当前能量函数和J-UNIWARD隐写中的失真函数，计算出相应的DCT系数失真值。利用STCs将编码后的信息嵌入到失真值较小的DCT系数中。在不同JPEG压缩质量因子和不同有效载荷下的实验结果表明，该算法不仅具有较高的JPEG压缩后提取信息的正确率，与JPEG压缩质量因子为75的J-UNIWARD隐写相比，其正确率从60%左右提高到接近100%，而且具有较强的抗检测性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2015 10th International Conference on Availability, Reliability and Security

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