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一种新的基于STC编码的JPEG图像隐写方法
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Abstract:
本文结合STC隐写编码，提出了一种新的针对JPEG图像的隐写方法。在采用STC隐写编码提高嵌入效率的同时，通过控制低频部分用于信息嵌入的绝对值为1的DCT系数比例来保持DCT系数直方图统计特性。实验结果表明，本文提出的新方法与Jsteg方法、F5方法相比，不仅可以实现更大的信息隐藏容量和更高的嵌入效率，而且隐秘图像具有更好的图像质量和抗直方图统计分析能力。
In this paper, a new steganography method for JPEG image is proposed based on STC steganography. While using STC steganographic coding to improve embedding efficiency, DCT coefficient histogram statistical characteristics are maintained by controlling the proportion of DCT coefficient with absolute value of 1 used for information embedding in the low-frequency part. Experimental results show that compared with Jsteg method and F5 method, the proposed new method can not only achieve greater information hiding capacity and higher embedding efficiency, but also has better image quality and anti-histogram statistical analysis ability.
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