引用本文: | 唐波,刘雨,孙茂印,等.基于内容检索中算法的层次化体系组织[J].国防科技大学学报,2006,28(6):86-89.[点击复制] |
TANG Bo,LIU Yu,SUN Maoyin,et al.Hierarchical Architecture of Algorithms in Content-based Retrieval[J].Journal of National University of Defense Technology,2006,28(6):86-89[点击复制] |
|
|
|
本文已被:浏览 6183次 下载 4930次 |
基于内容检索中算法的层次化体系组织 |
唐波, 刘雨, 孙茂印, 汤晓安 |
(国防科技大学 电子科学与工程学院,湖南 长沙 410073)
|
摘要: |
基于内容的检索中,检索算法的常规实现是面向单个特征完成特征提取和相似性匹配,再对单特征检索结果加权完成多特征检索,这种方法计算量大,缺乏灵活性。针对于此,提出了一种检索算法的层次化组织体系,能够灵活组织面向不同特征的检索算法,通过传输因子、优先级因子和复杂度因子的赋值,获得逐步精确的检索结果。实验证明,在查全率和查准率基本一致的前提下,与常规检索体系相比,新检索体系能够减少近40%的检索时间。 |
关键词: 层次化体系 基于内容检索 特征提取 相似性测量 |
DOI: |
投稿日期:2006-08-25 |
基金项目:国家863高技术研究计划资助项目(2003AA134016) |
|
Hierarchical Architecture of Algorithms in Content-based Retrieval |
TANG Bo, LIU Yu, SUN Maoyin, TANG Xiaoan |
(College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China)
|
Abstract: |
In the content-based retrieval, the conventional approach to the retrieval algorithms is to conduct the feature extraction and similarity match on the basis of single feature and then to conduct multi-feature extraction under the condition of weighting the result of single feature extraction. Such an approach incurs large amount of calculation and lacks flexibility. Therefore, a new architecture to organize different retrieval algorithms in content-based retrieval is proposed. It appears as a hierarchical architecture, which is able to acquire a gradually accurate result. The transfer factor, priority factor and complexity factor are defined in this architecture, which can help to combine different feature-oriented retrieval algorithms flexibly. Experiment shows that this architecture improves the retrieval efficiency, resulting in a reduction of 40% of the retrieval time. |
Keywords: hierachical architecture content-based retrieval feature extraction similarity measuring |
|
|
|
|
|