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两种建模方法在古文物三维模型重建中的研究 被引量:7
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作者 罗寒 王建强 +1 位作者 张飞 宋丹妮 《工程勘察》 2016年第2期41-44,61,共5页
海量点云数据为古文物三维模型重建开辟了一种全新的思路。常规获取点云的手段是采用三维激光扫描技术,其硬软件设备比较昂贵,目前普及度并不是很高,并且有时候外业工作量较大。本文依据数字摄影测量和计算机视觉原理,利用多视图影像重... 海量点云数据为古文物三维模型重建开辟了一种全新的思路。常规获取点云的手段是采用三维激光扫描技术,其硬软件设备比较昂贵,目前普及度并不是很高,并且有时候外业工作量较大。本文依据数字摄影测量和计算机视觉原理,利用多视图影像重建技术,仅对目标物多方位拍摄采集照片,将数码照片进行相互匹配对齐,生成实物表面的点云数据。基于点云数据,结合三角网格法和特征线提取法两种模型重建方法进行三维建模,探讨了模型重建过程中关键技术和主要问题,并完成建模工作,为实际生产提供技术支持。 展开更多
关键词 点云 数字摄影测量 三角网格 特征线提取法
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PROJECTION BASED STATISTICAL FEATURE EXTRACTION WITH MULTISPECTRAL IMAGES AND ITS APPLICATIONS ON THE YELLOW RIVER MAINSTREAM LINE DETECTION 被引量:1
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作者 Zhang Yanning Zhang Haichao +2 位作者 Duan Feng Liu Xuegong Han Lin 《Journal of Electronics(China)》 2009年第3期359-365,共7页
Mainstream line is significant for the Yellow River situation forecasting and flood control.An effective statistical feature extraction method is proposed in this paper.In this method, a between-class scattering matri... Mainstream line is significant for the Yellow River situation forecasting and flood control.An effective statistical feature extraction method is proposed in this paper.In this method, a between-class scattering matrix based projection algorithm is performed to maximize between-class differences, obtaining effective component for classification;then high-order statistics are utilized as the features to describe the mainstream line in the principal component obtained.Experiments are performed to verify the applicability of the algorithm.The results both on synthesized and real scenes indicate that this approach could extract the mainstream line of the Yellow River automatically, and has a high precision in mainstream line detection. 展开更多
关键词 Mainstream line PROJECTION Between-class scatter matrix High-order statistics SKEWNESS
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