| 遥感卫星图像中线性地质特征的自动提取 |
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| 引用本文： | 王今飞.遥感卫星图像中线性地质特征的自动提取[J].第四纪研究,2000,20(3):259-269. |
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| 作者姓名： | 王今飞 |
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| 作者单位： | 北京大学信息科学中心!北京100871，北京师范大学环境演变与自然灾害教育部重点实验室，北京100875，中国国家图书馆!北京100081 |
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| 基金项目： | 欧盟基金!EROCHINA－PL961745和IC18-CT97－0158 |
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| 摘 要： | 从卫星遥感图像上识别和提取与地质构造有关的线性特征是遥感技术在第四纪地质学中的一个很重要的应用方向。现有的遥感技术多采用单波段遥感图像，提取的线性特征通常不够完整。本文介绍一种用多波段遥感图像提取线性地质特征的方法。此方法采用作者研究开发的一种线性特征网络提取和分析系统，称为LINDA系统。结果表明，多波段线性特征提取方法比已有的单波段方法得到了更为满意的线性特征结果。
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| 关 键 词： | 卫星图像 线性地质特征 自动提取 |
| 收稿时间： | 2000-01-21 |
| 修稿时间： | 2000-01-21 |
AUTOMATED GEOLOGIC LINEAMENT DETECTION FROM SATELLITE REMOTE SENSING IMAGERY |
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| Xie Kunqing, Li Zhiyao.AUTOMATED GEOLOGIC LINEAMENT DETECTION FROM SATELLITE REMOTE SENSING IMAGERY[J].Quaternary Sciences,2000,20(3):259-269. |
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| Authors: | Xie Kunqing Li Zhiyao |
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| Institution: | Xie Kunqing
;(Center for Information Science. Peking University, Beijing 100871; Key Laboratory of Environmental Change and Natural Disaster, Ministry of Education of China, Beijing Normal University,Beijing 100875;);Li Zhiyao
;(National Library of China, Beijing 100081) |
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| Abstract: | The primary objective of this paper is to probe an effective way of acquiring thetree-ring view singular value with a plate scanner and of applying the image analysisand digital process to dendrochronological research. Through the stahstical analysis oftree-ring image distribution charateristics and noise variation, a new algorithm ofimage segmentation and feature extraction is designed, and then a correspondingsoftware package of personal computer tree-ring image process system is developedaccording to the dendrochronological research character. As a result of the realprocess and the analysis combined with other methods of dendrochronological research,it is demonstrated that the approach of scanning image process is not only feasiblebut also more effective and accurate. Therefore, it will be possible to make thedendrochronological research and applicahon in environmenta change more widespreadand profound. The contents and achievements of the research are mainly reflected inthe following six aspects:(1) Establishing an effechve method by using the personal computer devices(including tLhe plate scanner) to acquire the tree-ring view singular value, whichimproves the measuring tree-ring way. Compared with other specialized devices, thismethod reduces the processing cost and makes the processing more efflciency andmore accuracy.(2) Making a systematic study and analysis in the tree-ring and its errordistribution with the image theory and the mathematics method, and proving theresearch way to be feasible through the theory and the practice.(3) Making full use of the two-dimension information of digital image to studythe variation in the tree-ring growth area and then to raise the reliability of statisticalanalysis.(4) Thviding a ring into earlywood and latewood areas by the image segmentprocess so that the time-scale analysis precision will be improved anddendrochronological research will be more profound.(5) Designing a quantitative index of the difference between earlywood mean grayvalue and latewood mean gray value as the indicator of tree-ring growth. The indexcan effectively restrain the influence of image noise on the statistic analysis oftree-ring gray value, and have a good response to climate changes, which can be used as a subshtute for maximum density of tree-ring in dendrochronological research.(6) Developing a software package to be applied to dendrochronological analysisand research based on the personal computer using Microsoft Visual C+ + language. |
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| Keywords: | tree-ring environment change scanning image image analysis |
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