| 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] |
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| 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 |
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(国防科技大学 电子科学与工程学院，湖南 长沙 410073)
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| 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) |
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| Hierarchical Architecture of Algorithms in Content-based Retrieval |
| TANG Bo, LIU Yu, SUN Maoyin, TANG Xiaoan |
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(College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China)
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| 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 |
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