| 熊志勇,王江晴.基于边缘检测和像素分类的可逆数据隐藏[J].光电子激光,2014,(7):1409~1415 |
| 基于边缘检测和像素分类的可逆数据隐藏 |
| Reversible data hiding based on edge detection and pixel classification |
| 投稿时间：2014-02-23 |
| DOI： |
| 中文关键词: 可逆数据隐藏 边缘检测 像素分类 预测误差直方图平移 |
| 英文关键词:reversible data hiding edge detection pixel classification predict ion error histogram shifting |
| 基金项目:国家自然科学基金(60975021)资助项目 (中南民族大学 计算机科学学院,湖北 武汉 430074) |
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| 中文摘要: |
| 为了提高嵌入算法的整体性能,提出一种基于边 缘检测和像素分类的灰度图像可逆数据隐藏算法。 算法按嵌入容量优先原则自适应地选择最佳阈值提取图像边缘,并根据边缘信息和指定的 图像质量控制 因子将像素分为平滑、弱边缘和强边缘像素3类。对平滑像素,通过增加嵌入强度的方法提 高嵌入容量, 预测误差直方图平移2位；对弱边缘像素,像素值最大修改量为1,从而保证图像含密质量； 强边缘像素 的像素值保持不变,进一步提高含密图像质量。实验结果表明,本文算法在保证图像质量的 同时有效提高嵌入容量,算法的整体性能优于其它同类算法。 |
| 英文摘要: |
| In order to improve the overall performance of embedding algorithm,th is paper proposes a reversible data hiding scheme based on edge detection and pixel class ification for gray images.In accordance with the priority principle of embedding capacity,the optim al threshold is chosen to extract the image edge,and according to the edge informat ion and the specified image quality control factors,the pixels are divided into smooth,weak edge and stron g edge pixels.For smooth pixels,by increasing the embedding strength to improve embedding capacit y,the prediction error histogram shifts by 2;For the weak edge pixels,the maximum modification i s 1,thus ensuring the quality of the stego-image;Strong edge pixel value remains unchan ged,further improving the stego-image quality.Experimental results show that the proposed a lgorithm can achieve higher embedding capacity and imperceptible distortion,and the overall performance of the algorithm is superior to that of other similar algorithms. |
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