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图像纹理特征及其在CBIR中的应用 被引量:45
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作者 万华林 Morshed U.Chowdhury +1 位作者 胡宏 史忠植 《计算机辅助设计与图形学学报》 EI CSCD 北大核心 2003年第2期195-199,共5页
基于内容的多媒体信息检索是当前世界的研究热点 ,然而在图像内容表示及其相似性度量这两个关键问题上取得的进展还不能令人满意 .通过深入研究纹理的本质和人类视觉系统的特性 ,结合MPEG 7标准提出的图像内容描述子概念 ,提出一种新的... 基于内容的多媒体信息检索是当前世界的研究热点 ,然而在图像内容表示及其相似性度量这两个关键问题上取得的进展还不能令人满意 .通过深入研究纹理的本质和人类视觉系统的特性 ,结合MPEG 7标准提出的图像内容描述子概念 ,提出一种新的谱方法来描述图像的纹理特征 ,并将其应用于图像内容的表示和检索 .在此基础上 ,讨论了图像的颜色描述子和相似性度量策略 。 展开更多
关键词 图像纹理特征 CBIR 纹理谱 相似性度量 图像检索 计算机视觉 MPEG-7 图像处理 多媒体
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Isomorphic Transformations of Uncertaintiesfor Incorporating EMYCIN-Style andPROSPECTOR-Style Systems intoa Distributed Expert System
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作者 张成奇 罗旭东 《Journal of Computer Science & Technology》 SCIE EI CSCD 1999年第4期386-392,共7页
In the past, expert systems exploited mainly the EMYCIN modeland the PROSPECTOR model to deal with uncertainties. In other words, a lot ofstand-alone expert systems which use these two models are available. If we can ... In the past, expert systems exploited mainly the EMYCIN modeland the PROSPECTOR model to deal with uncertainties. In other words, a lot ofstand-alone expert systems which use these two models are available. If we can usethe Internet to couple them together, their performance will be improved throughcooperation. This is because the problem-solving ability of expert systems is greatlyimproved by the way of cooperation among different expert systems in a distributedexpert system. Cooperation between different expert systems with these two het-erogeneous uncertain reasoning models is essentially based on the transformations ofuncertainties of propositions between these two models. In this paper, we discoveredthe exactly isomorphic transformations uncertainties between uncertain reasoningmodels, as used by EMYCIN and PROSPECTOR. 展开更多
关键词 algebraic structure COOPERATION distributed expert systems iso-morphic transformation uncertain reasoning GROUP
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