一种基于内容的图象检索方法的实现

A Research and Implementation Method of Content Based Image Retrieval

现有的许多多媒体数据库系统只提供了基于媒体描述关键字的检索和查询，却忽略了另一个重要的信息来源——媒体的内容。基于内容的图象检索技术一般采用颜色直方图为特征，但是这种方法不能反映空间特性。本文在直方图技术的基础上引入了颜色对方法，将图象的空间特性反映出来，因而能检索具有清晰边界的图象，并且图象的大小变化和旋转以及轻微的光照变化不影响检索结果。实验结果表明这种方法改善了检索效果。

In many current multimedia database systems, query or retrieval is only based on descriptive KeyWords of media, it ignores another important information resource( the content of media. Content based image retrieval techniques usually use the color histogram of the full image. But this method can't contain the spatial features. In this paper, we introduce a color pair retrieval method that derived from color histogram. It can reflect the spatial information of the images. Therefore it can retrieval images with clear boundary. The retrieval results are not affected by image's size, rotation and also the little changes of light. The experiment result shows this method improves the retrieval effect.