基于灰度值限定信息熵的图像检索方法

颜色直方图图像检索方法是一种重要的基于颜色特征图像检索方法。在分析了基于颜色直方图信息熵进行图像检索方法的基础上,提出了一种通过灰度值对信息熵进行限定的遥感图像检索算法。该方法在一定程度上解决了传统的基于颜色直方图信息熵方法进行图像检索时,由于熵的对称特性造成图像误检索的不足。在实验精度评价中,分别采用直方图分析法和相关系数法,从定性与定量两个角度对检索精度进行了评价。实验结果显示,运用该方法进行检索,具有较高的检索精度,相关系数在0.95以上,在实际应用中具有良好的可行性。

Image Retrieval Based on Limited Hue Value on Information Entropy

A new image retrieval algorithm based on color histogram information entropy is presented.Because the traditional method has not considered the symmetrical character of entropy,so it is easy to create mistakes.By using a limited hue value on information entropy the new method can solve this problem well.As to evaluate the accuracy,we used histogram analysis and correlation coefficients,from qualitative and quantitative of two views to make sure accuracy is dependable.The results show that use this method to search for a similar image is possible and have a high accuracy,the correlation coefficients is above 0.95,and in practical application this method also has a good possibility.