基于彩色边缘网格直方图的图像检索方法  

A New Image Retrieval Method Based Color Edge Feature

作　　者：王向阳[1] 周璐[1] 芦婷婷[1] 

机构地区：[1]辽宁师范大学计算机与信息技术学院

出　　处：《小型微型计算机系统》2007年第9期1705-1709,共5页Journal of Chinese Computer Systems

基　　金：辽宁省自然科学基金项目(20032100)资助;大连市科技基金(2006J23JH020);视觉与听觉信息处理国家重点实验室(北京大学)开放基金项目(0503)资助;"图像处理与图像通信"江苏省重点实验室(南京邮电大学)开放基金项目(ZK205014)资助;江苏省计算机信息处理技术重点实验室开放课题基金(KJS602)资助

摘　　要：边缘是图像局部变化最显著的部分,也是人类理解图像内容的重要线索.本文提出了一种基于彩色边缘特征的图像检索方法,该方法首先利用Canny检测算子提取出原始图像的彩色边缘信息,然后将彩色边缘划分成圆环区域和角形区域,并分别计算出圆环区域和角形区域的颜色直方图;最后综合利用上述圆环区域和角形区域的颜色直方图计算图像间内容的相似度,并进行彩色图像检索.仿真实验表明,该方法能够准确和高效地查找出用户所需内容的彩色图像,并且具有较好的查准率和查全率.The image edge is a part of the image that has a high image gradient （i. e. the pixel values are changing rapidly）, which is an important clue to understand image content. In this paper,a new image retrieval method based color edge feature is proposed. Firstly,the color edge is extracted by using canny detection operator. Secondly,the color edge is divided to some ring regions and angle regions,and the color histogram for each ring region and angle region are computed as image features. Finally,the similarity between color images is computed by using a combined feature index based on the color histogram for ring region and angle region. Experimental results show that the proposed image retrieval is more accurate and efficient in retrieving the user-interested images.

关 键 词：图像检索 彩色边缘 颜色直方图 圆环 角形 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]