基于直方图调整的二值图像无损数据隐藏

提出一种基于游程编码的直方图调整的二值图像无损数据隐藏新方法。选择长度不小于阈值T1的游程对序列,先进行去除长度为1的白游程操作,然后在长度为T的黑游程处嵌入数据。该方法可以适应文字、图表以及文字和图表的混合图像,也可以适应半色调和非半色调图像。实验表明,该方法在嵌入容量和视觉效果都优于已有的方法。

Reversible binary image data hiding by histogram modification

A novel reversible binary image data hiding scheme using Run-Length (RL) histogram modification was presented. Select the sequence of RL couples in which the length of couple is not shorter than threshold T1: First eliminate the white RL of isolated white pixels, and then embed data in the black RL whose length equals T. The proposed scheme worked for text, graphics, their mixture, and both halftone and non-halftone binary images. Experimental results have shown its superiority to other methods.