一种基于数字图像自相关检测的改进算法

An Improvement Mothod of Autocorrelation Test Based on Digital Images

该文首先简要介绍了基于图像位平面分析的一种检测算法——转换函数法,并讨论了这种算法的优缺点。针对这种算法的不足,提出了一种区域自相关检测的方法,提高了检测的分辨率。根据检测到的结果,运用统计检验算法—t检验对图像最低位平面进行统计分析。最后通过试验验证了改进算法的有效性,并给出了相关的试验分析与结论。

This paper briefly introduces an analysis meth od based on image bit plane-Translation Function Algorithms ,and discuss es the advantage and shortcoming of this method.Aiming at its shortage,it presents an improvement method that can improve the distinguished rate of the testing resu lt by autocorrelation test in different areas of the digital images.According to the testing result,the paper applies the statistics method-t test to analys e the lowest bit plane of the digital images.Finally,the paper verifies the va lidity of the improvement method,and gives a related analysis and conclusion.