图像相似模式挖掘中的颜色-位置直方图方法  

A METHOD OF COLOR-SPATIAL HISTOGRAM FOR IMAGE SIMILARITY PATTERNS MINING

作　　者：宋擒豹[1] 杨向荣[1] 沈钧毅[1] 王甲民 

机构地区：[1]西安交通大学计算机科学与技术系,西安710049

出　　处：《计算机研究与发展》2002年第9期1132-1137,共6页Journal of Computer Research and Development

基　　金：国家自然科学基金项目 ( 6 0 1730 5 8);国家"八六三"高技术研究发展计划项目 ( 86 3-30 6 -QN2 0 0 0 -5 )资助

摘　　要：颜色直方图计算简单快捷 ,对大小、方向、物体移动和视点等不敏感而在基于内容的图像检索中得到了广泛的应用 .然而 ,由于它只包含颜色的总体信息而没有反映其相对位置 ,检索精度受到了一定的限制 .针对这个问题 ,提出了一种颜色 -位置直方图 ,该直方图在不失传统直方图鲁棒性的前提下 ,将颜色和位置信息有机地融合起来 ,同时考虑它们对图像内容的表征作用 .由于该直方图在反映颜色频率的同时也记录其分段虚拟边界的位置信息 ,因而较好地解决了传统直方图存在的问题 .对合成图像和实际图像所做的实验结果表明 ,该方法是有效的 ,具有一定的实用价值 .Color histograms are widely used for content-based image retrieval because they are trivial and effective to compute, not sensitive to size and orientation, and robustly tolerate movement of objects in the image and changes in camera viewpoint. However, a color histogram only records an image's overall color compositions and no any spatial information is included, so the retrieval precision is limited. In this paper, a color-spatial histogram is proposed, which incorporates spatial information with color compositions without sacrificing the robustness of color histograms. The purpose is to consider the representation role of color compositions and spatial information in the meantime. Each entry in a color-spatial histogram is the color frequency and corresponding position information of the virtual boundary. Experimental evidence suggests that this new color-spatial histogram outperforms not only the traditional color histogram method but also the cumulative color histogram method for image retrieval.

关 键 词：图像相似模式挖掘 图像检索 颜色直方图 颜色-位置直方图 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]