基于骑士巡游的匀速移动图像置乱算法  

Image Fundamental Motion Scrambling Method in Uniform Velocity Based on Knight-tour Transformation

作　　者：邢益良[1] 马亮[1] 韩宝如[1] 符石[1] 

机构地区：[1]海南软件职业技术学院软件工程系,海南琼海571400

出　　处：《计算机与现代化》2014年第4期41-46,共6页Computer and Modernization

基　　金：海南软件职业技术学院基金资助项目(Hr201304)

摘　　要：好的图像置乱方法对提高图像置乱效果、降低密钥管理成本和提高抵抗攻击能力具有重要意义。本文提出基于骑士巡游的匀速移动算法置乱图像。首先把图像划分为区域A和区域B,然后把区域A和区域B的像素互换,使区域A的像素均匀分布到区域B中,最后使用骑士巡游算法从局部和全局2个方面进行置乱图像。实验表明本文方法能有效减少加密密钥数量,具有较好的置乱效果和较好的抗干扰性。Well-tried scrambling method is important to improve scrambling effectiveness, reduce key management cost and im- prove the resistance of attacking. In this paper, an image fundamental motion scrambling method was introduced. Firstly, image was divided into part A and part B ; Secondly, the swap of pixels of part A and part B was implemented in uniform velocity motion method and pixels of part A was evenly distributed in part B ; Lastly, image was scrambled by knight-tour transformation in global and local view. The results of experiment show this method can decrease keys with good scrambling effectiveness and anti-interfer- ence performance.

关 键 词：骑士巡游 匀速移动 图像置乱 信息隐藏 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]