通信学报2017，Vol.38Issue(9)：1-8,8.DOI:10.11959/j.issn.1000-436x.2017177
动态更新失真代价的自适应JPEG隐写算法
Adaptive JPEG steganography based on distortion cost updating
摘要
Abstract
Previous adaptive JPEG steganography algorithms mostly calculate image distortion before secret informa-tion embedding, so they can't dynamically adjust distortion costs. Considering the mutual impacts during embedding, an adaptive JPEG steganography algorithm based on distortion cost updating was proposed. Firstly, three factors that affect embedding fluctuations were analyzed, including quantization step, the absolute value of the quantized DCT coefficient to be modified and perturbation error. Then the embedding update strategy (EUS) was proposed, which enabled to dy-namically update the distortion costs. After that, an adaptive JPEG steganography algorithm was implemented combining the strategy. The experimental result illustrates that the algorithm can significantly improve the secure performance of JPEG steganography algorithm.关键词
信息安全/自适应隐写/失真函数/JPEGKey words
information security/adaptive steganography/distortion function/JPEG分类
信息技术与安全科学引用本文复制引用
汤光明,孙艺,徐潇雨,王宇..动态更新失真代价的自适应JPEG隐写算法[J].通信学报,2017,38(9):1-8,8.基金项目
国家自然科学基金资助项目(No.61272488)The National Natural Science Foundation of China (No.61272488) （No.61272488）
