| 基于LiDAR的海岛岸线自动提取研究 |
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| 引用本文： | 郑真真,徐爱功,徐辛超.基于LiDAR的海岛岸线自动提取研究[J].测绘与空间地理信息,2017,40(9). |
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| 作者姓名： | 郑真真 徐爱功 徐辛超 |
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| 作者单位： | 辽宁工程技术大学测绘与地理科学学院,辽宁阜新,123000 |
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| 基金项目： | 国家自然科学基金项目，国家重点研发计划 |
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| 摘 要： | 为了探讨栅格化方法与图像分割法对海岛岸线提取的效果,本文主要研究了基于Li DAR数据利用这两种方法对某岛进行瞬时海岸线的提取。利用栅格化方法通过对Li DAR点云数据进行粗差剔除、滤波去噪、构建Terrain数据集、创建栅格表面、生成TIN模型及自动生成等高线,从而实现了瞬时海岸线的提取;利用图像分割法是通过对Li DAR点云数据进行粗差剔除、滤波处理、构建TIN模型、生成二值栅格图像、图像处理与图像边缘提取的过程实现瞬时海岸线的提取。对两种方法提取的海岸线进行叠加显示分析,试验结果表明:两种方法提取的海岸线形态结构基本吻合,海岸线提取效率较传统方法均有提高,但栅格化方法提取的海岸线比图像分割方法提取的海岸线更平滑、更细化,边缘信息较为丰富,与实际海岸线更贴切,效果更加理想。
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| 关 键 词： | LIDAR 海岛岸线提取 不规则三角网(TIN) 栅格化 图像分割法 |
Research on Automatic Extraction of an Island Based on LiDAR |
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| ZHENG Zhen-zhen,XU Ai-gong,XU Xin-chao.Research on Automatic Extraction of an Island Based on LiDAR[J].Geomatics & Spatial Information Technology,2017,40(9). |
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| Authors: | ZHENG Zhen-zhen XU Ai-gong XU Xin-chao |
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| Abstract: | In order to investigate the effect of island coastline extraction of rasterizing method and the method of image segmentation,this paper mainly based on LiDAR data using these two methods are studied to extract the instantaneous some island coastline.Using the rasterizing method by eliminating gross error of LiDAR point cloud data,filtering de-noising,constructing Terrain data sets,creating raster surface,generating TIN model and the automatic generation of contour,so as to realize the extraction of the instantaneous coastline;Using the method of image segmentation is based on the LiDAR point cloud data for gross error elimination,filtering processing,constructing TIN model,generate binary raster image,image processing and image edge extraction process of realize the instantaneous coastline extraction.According to analysis the study of the superposition of two kinds of methods to extract coastline,the results showed that the two methods of extracting the coastline of morphological structure is basically consistent,the coastline extraction efficiency were improved than the traditional methods,but the coastline extracted from rasterizing method is smoother and more refined than the image segmentation method,the edge information is more abundant,and more appropriate with the actual coastline,and the effect is more ideal. |
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| Keywords: | LiDAR island coastline extraction Triangle Irregular Net (TIN) rasterizing image segmentation method |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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