基于平滑分块基像素定位的可逆信息隐藏方法  

Reversible Information Hiding Method Based on Location of Benchmark Pixel in Smooth Block

作　　者：项洪印[1] 苑津莎[1] 侯思祖[1] 

机构地区：[1]华北电力大学电气与电子工程学院,河北保定071000

出　　处：《计算机工程》2016年第9期116-120,共5页Computer Engineering

基　　金：国家自然科学基金资助项目(61302106);中央高校基本科研业务费专项基金资助项目(2014MS105;13MS66);河北省自然科学青年基金资助项目(E2013502267)

摘　　要：预测和排序方法可使含水印图像获得高保真度,但不能在全平滑分块中嵌入信息。为此,提出一种基于基像素定位的数字图像平滑区域可逆信息隐藏方法。将含有n个像素的全平滑子块中的第一个像素作为基像素,使用分块位置图进行定位来预测分块中其他像素的灰度值,使得其余n-1位可用于顺序嵌入信息比特。实验结果表明,该方法可保证较高的嵌入质量,能有效提升容量和峰值信噪比。High fidelity in watermarked image can be obtained based on prediction and sorting. However, information cannot be embedded into a whole smooth block. For this problem,a novel reversible information hiding method based on location of benchmark pixels in smooth region is proposed for digital images. It takes the first pixel as the benchmark pixel in all smooth sub block with n pixels. The block location map is used for localization to predict gray value of other pixels in the block. Thus, the remaining n - 1 pixels can be used to embed information bits. Experimental results verify the proposed method guarantees high fidelity. The method can also effectively improve the capacity and peak signal to noise ratio.

关 键 词：可逆水印 全平滑子块 基像素定位 位置图 绝缘子图像 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]