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提花CAD中的图形处理 被引量:1
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作者 夏炜新 《同济大学学报(自然科学版)》 EI CAS CSCD 1994年第2期253-258,共6页
二维周期图形在工艺美术、纺织、广告等领域有着重要的应用背景.本文提出了一种基于基元图形的周期图形处理方法.基元图形由于其拓扑特性的改变,使得现有二维图形学的一些概念和方法不能直接地应用.为此,本文讨论了基元图形的性质... 二维周期图形在工艺美术、纺织、广告等领域有着重要的应用背景.本文提出了一种基于基元图形的周期图形处理方法.基元图形由于其拓扑特性的改变,使得现有二维图形学的一些概念和方法不能直接地应用.为此,本文讨论了基元图形的性质,并在此基础上提出了基元图形处理的一些概念和实现方法,将该方法用于实际提花CAD系统,获得了满意的结果. 展开更多
关键词 二维图形学 周期图形
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Quantitative Study on Polymer Flocculation Mechanism Based on Mathematical Morphology 被引量:3
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作者 GUO Ling-xiang WANG Chen-yi 《Journal of China University of Mining and Technology》 EI 2006年第2期241-244,共4页
Until now, understanding of polymer flocculation has remained restricted within the qualitative explanations of the bridge unite theory and the electricity neutralization theory, because people not only lacked the sys... Until now, understanding of polymer flocculation has remained restricted within the qualitative explanations of the bridge unite theory and the electricity neutralization theory, because people not only lacked the systemic knowl- edge of the polymer flocculation mechanism, the flocculation dynamic process study and the flocculation effect esti- mate, but also could not penetrate within the flocculation process microscopic field to obtain the structural character parameters such as floccule structure, the frame bridge models and so on. In this paper, not only coal slurry flocculation images were photographed by using the transmission electron microscope, but also the basic theory of the mathematical morphology was applied to the coal slurry flocculation image processing. The steps and methods of the mathematical morphology were expounded in detail. The micro-structural parameters such as the flocculate size and the bridge length were obtained, which combined the microscopic flocculation grain configuration observations with the macroscopic flocculation effect, so as to get the maximum amount of veracious information to describe and explain the whole floc- culation course by rule and line. On this basis, not only the flocculation models of polymers in the coal slurry are sug- gested, but the quantitative study on flocculation mechanism has been achieved. 展开更多
关键词 mathematical morphology dual image flocculation mechanism flocculate bridge
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