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深井筒测量投向投点方法的尝试
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作者 姚德顺 曾祥雄 《矿山测量》 2002年第2期44-45,共2页
文中叙述了平顶山煤业集团五矿北山风井在联系测量投向、投点和导入标高时,针对井筒深、淋水大等条件 ()所采取的技术,为深井筒联系测量积累了经验。
关键词 投点方法 井筒 测量投向 导入标高 钢丝
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Research and development of fringe projection-based methods in 3D shape reconstruction 被引量:13
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作者 WU Lu-shen PENG Qing-jin 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2006年第6期1026-1036,共11页
This paper discusses current research and development of fringe projection-based techniques. A system based on Fourier transform profilometry (FTP) is proposed for three-dimensional (3D) shape recovery. The system imp... This paper discusses current research and development of fringe projection-based techniques. A system based on Fourier transform profilometry (FTP) is proposed for three-dimensional (3D) shape recovery. The system improves the method of phase unwrapping to gain accurate 3D shapes of objects. The method uses a region-growing algorithm for the path prediction guided by the quality map to increase the recovering accuracy and provides a fast and simple tool for 3D shape recovery. The shape measurement and data recovery are integrated to offer a new method of 3D modelling. Examples are presented to verify the feasibility of the proposed method. 展开更多
关键词 3D modelling Fringe projection Quality map 3D measurement Reverse engineering
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Forecasting the Advertising investment Risk of Sporting Goods Based on Optimized Support Vector Machine
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《International English Education Research》 2014年第10期11-13,共3页
Forecasting The Advertising investment risk of Sporting goods is very important which can provide the decision support for top manager. In this paper, we presented an optimized support vector machine (OSVM) to predi... Forecasting The Advertising investment risk of Sporting goods is very important which can provide the decision support for top manager. In this paper, we presented an optimized support vector machine (OSVM) to predict Advertising investment risk of Sporting goods. Experimental results show that the prediction accuracy improved by the proposed method. 展开更多
关键词 Advertising investment Risk Forecasting Support Vector Machine Paritcle Swarm Optimization Generalized Pattern Search.
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