摘要： 为提高秘密数据传输的安全性，提出一种最小化扭曲的图像隐写算法。根据图像平滑特性及具体隐写嵌入操作对特性的影响为载体像素分配扭曲值，以表征在该像素上进行特定嵌入操作对图像总体统计特性的影响程度，再利用STC码选择使图像整体扭曲函数最小的嵌入位置和嵌入方式进行信息嵌入。仿真实验结果表明，该算法具有良好的抗检测性。
关键词:
信息隐藏,
隐写术,
隐写码,
扭曲函数,
平滑度,
STC码
Abstract: In order to improve the security of secret data transmission, a steganographic algorithm of minimized distortion is proposed. In order to express the influence of the pixel modification on the whole statistic character, scalar values are assigned to every pixel based on smoothness and impact of different embedding mode on it. Embedding is actualized by choosing the proper embedding position and mode utilizing Syndrome-trellis Codes(STC). Experiments show that the proposed algorithm possesses a good undtetability.
Key words:
information hiding,
steganography,
steganographic code,
distortion function,
smoothness,
Syndrome-trellis Codes(STC)
中图分类号:
刘华, 汤光明. 最小化扭曲的抗检测隐写算法[J]. 计算机工程, 2012, 38(18): 97-99.
LIU Hua, SHANG Guang-Meng. Undetectable Steganographic Algorithm of Minimized Distortion[J]. Computer Engineering, 2012, 38(18): 97-99.