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图像检索技术综述 被引量:39
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作者 向友君 谢胜利 《重庆邮电学院学报(自然科学版)》 2006年第3期348-354,共7页
对于一个图像检索系统,最重要的是信息获取的准确性、快速性和有效性。通过对现有信息检索技术的分析和比较,包括基于内容的信息检索、基于语义的信息检索、基于反馈的信息检索和基于知识的信息检索,指出了现有图像检索系统的难点和不足... 对于一个图像检索系统,最重要的是信息获取的准确性、快速性和有效性。通过对现有信息检索技术的分析和比较,包括基于内容的信息检索、基于语义的信息检索、基于反馈的信息检索和基于知识的信息检索,指出了现有图像检索系统的难点和不足,同时指出了图像检索技术的发展趋势和研究方向。 展开更多
关键词 基于内容图像检索 基于语义图像检索 基于反馈图像检索 基于知识图像检索
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Active learning based on maximizing information gain for content-based image retrieval
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作者 徐杰 施鹏飞 《Journal of Southeast University(English Edition)》 EI CAS 2004年第4期431-435,共5页
This paper describes a new method for active learning in content-based image retrieval. The proposed method firstly uses support vector machine (SVM) classifiers to learn an initial query concept. Then the proposed ac... This paper describes a new method for active learning in content-based image retrieval. The proposed method firstly uses support vector machine (SVM) classifiers to learn an initial query concept. Then the proposed active learning scheme employs similarity measure to check the current version space and selects images with maximum expected information gain to solicit user's label. Finally, the learned query is refined based on the user's further feedback. With the combination of SVM classifier and similarity measure, the proposed method can alleviate model bias existing in each of them. Our experiments on several query concepts show that the proposed method can learn the user's query concept quickly and effectively only with several iterations. 展开更多
关键词 active learning content-based image retrieval relevance feedback support vector machines similarity measure
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