摘要
提出一种基于双直方图平移的彩色图像可逆数据隐藏算法。利用色彩分量间的相关性减小差值,使差值直方图更加紧凑、直方图的峰值更大。采用直接调整像素值的方法在差值中嵌入数据,由像素值的二次可调整性定位不可调整像素,并嵌入少量的标志信息代替定位图,从而提高嵌入容量。实验结果表明,本文算法在保证图像质量的同时大幅提高了嵌入容量,与其它算法相比,算法的整体性能更高。
A reversible data hiding algorithm for color images based on double histogram shifting is proposed.This algorithm uses the correlation among color components to decrease difference.The difference histogram is more compact,and the peak is larger.The adjusting pixel value method is adopted to embed data information into difference,the twice adjustability of pixels value is utilized to locate pixels which can not be adjusted,and some flag information instead of location map is embedded,so the embedding capacity is improved.Experimental results show that the embedding capacity is significantly improved with the quality of stego-image ensured.Compared with other algorithms,the proposed scheme is with higher performance.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2011年第2期281-287,共7页
Journal of Optoelectronics·Laser
基金
国家自然科学基金资助项目(60975021)
中南民族大学中央高校基本科研业务费专项资金项目资助(ZZY10006)
关键词
可逆数据隐藏
差值直方图平移
双直方图平移
像素值可调整性
定位图
reversible data hiding
difference histogram shifting
double histogram shiting
adjustability of pixels value
location map
