基于图像的LSB隐藏算法位平面分析及算法改进

LSB算法是一种简单而通用的信息隐藏方法，具有不可见性好和可隐藏信息量大的特点，但其鲁棒性较低；分析了以图像为载体的LSB算法位平面特征及其易攻击性，提出了一种改进方法，给出了实现方案；实验结果表明，算法改进后能够很好的抵御针对LSB算法的位平面攻击，在隐藏大量信息的情况下，保持了载体图像的视觉特性和纹理特性。

Bit-plane Analysis of LSB Hiding Algorithm Based on Image and Improvement of Algorithm

LSB algorithm is a general information hiding way. It can hide large amount of information and keep the secrecy of hiding information. But it has a lower robustness. The paper analyses the bit plane feature of LSB algorithm based on image. This algorithm is easy to be assaulted. An improved algorithm and its practical scheme are given. By the test result, The conclusion shows that the improved algorithm can resist bit plane assault to LSB algorithm. It can keep vision feature and veins feature of the image while large amount of information are hidden.