ASD FieldSpec 3地物光谱数据在水磨—大河地区岩性分类中的应用

贺洋; 徐韬; 宋云

ASD FieldSpec 3地物光谱数据在水磨—大河地区岩性分类中的应用

四川省地质调查院, 成都 610081

基金项目:

中国地质调查局地质调查项目资[2010]矿评01-07-16

详细信息

作者简介:
贺洋(1982-), 男, 硕士, 工程师, 从事遥感地质、基础地质工作。E-mail:heyang0808@qq.com

中图分类号: P627
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- 被引次数: 0
出版历程
- 收稿日期: 2014-06-14
- 刊出日期: 2015-03-01

APPLICATION OF IN-SITU MEASURED SPECTRA DATA BY ASD FieldSpec3 ON LITHOLOGIC CLASSIFICATION IN SHUIMO-DAHE AREA

Sichuan Geological Survey, Chengdu 610081, China

摘要

摘要: 以四川省旺苍县水磨—大河地区为研究区, 利用美国ASD FieldSpec 3便携式地物光谱仪野外实测岩矿波谱数据和ASTER遥感影像数据, 基于GIS平台, 根据野外实测的岩石光谱曲线和USGS光谱库的典型岩石光谱曲线提取端元波谱, 对区域影像像元的光谱曲线进行匹配, 采用ENVI4.4软件自动信息提取与人机交互解译相结合的方式, 进行岩性分类, 可以有效地划分区内岩性界线, 满足填图需求, 对辅助该区区域基础地质调查、矿产普查等具有重要的应用价值。
- 岩矿光谱 /
- ASTER /
- 光谱角填图 /
- 匹配滤波 /
- 岩性分类
Abstract: This paper chose the Shuimo-Dahe area of Sichuan Wangcang as its research area, use ASTER image and in-situ measured spectra data by ASD FieldSpec3 as the research object, extract mineral endmember information according to rock spectral curve from field survey data and USGS spectral library, match the spectral curve of image pixel, combine ENVI4.4 software for automatic information extraction and man-computer interactive interpretation, to conduct lithology classification, based on GIS, it has an important application value for basic geological survey and mineral survey.
- spectral of minerals and rocks /
- ASTER /
- spectral angle mapper /
- matched filtering /
- lithological classification

HTML全文

图 1 研究区地貌及实测路线图

Figure 1. Geomorphology and measured route of research area

下载: 全尺寸图片幻灯片

图 2 野外光谱数据库采样前后

(上为采样前，下为采样后)

Figure 2. Sampling contrast of spectral database in the field

下载: 全尺寸图片幻灯片

图 3 大气校正前后影像对比

(RGB=321，左为校正前，右为校正后)

Figure 3. Image contrast of atmospheric correction

下载: 全尺寸图片幻灯片

图 4 研究区光谱角岩性分类

Figure 4. Spectral angle lithology classification of research area

下载: 全尺寸图片幻灯片

图 5 研究区矿物指数法RGB合成图

Figure 5. Synthesis chart (RGB) of Mineral Index of research area

下载: 全尺寸图片幻灯片

图 6 研究区光谱匹配滤波RGB合成图

Figure 6. Synthesis chart (RGB) of matched filtering of research area

下载: 全尺寸图片幻灯片

图 7 研究区岩性单元解译图

Figure 7. Interpretation chart of lithologic unit classification of research area

下载: 全尺寸图片幻灯片

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