植被覆盖区羟基和碳酸盐矿物光谱吸收深度校正模型

周超; 汪大明; 陈圣波; 刘彦丽; 王明常

doi:10.3799/dqkx.2015.119

植被覆盖区羟基和碳酸盐矿物光谱吸收深度校正模型

doi: 10.3799/dqkx.2015.119

1.
吉林大学地球探测科学与技术学院, 吉林长春 130026
2.
中国地质调查局油气资源调查中心, 北京 100027
3.
中科院地理所地理信息系统培训中心, 江苏苏州 215000

基金项目:

国家地质矿产调查评价项目 1212011087112

国家自然科学基金项目 41402293

国家高技术研究发展计划(863计划)项目 2012AA12A308

吉林大学研究生创新基金资助项目 2014029

数字制图与国土信息应用工程国家测绘地理信息局重点实验室开放研究基金项目 GCWD201402

详细信息

作者简介:
周超(1988-), 男, 博士研究生, 主要从事高光谱地质遥感研究.E-mail: zhouc0316@126.com

中图分类号: P627
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- 被引次数: 0
出版历程
- 收稿日期: 2015-04-11
- 刊出日期: 2015-08-01

Vegetation Corrected Continuum Depths Model and Its Application in Mineral Extraction from Hyperspectral Image

1.
College of Geoexploration Science and Technology, Jilin University, Changchun 130026, China
2.
Oil and Gas Survey, China Geological Survey, Beijing 100027, China
3.
GIS Training Centre Chinese Academy of Sciences, Suzhou 215000, China

摘要

摘要: 为增强植被覆盖区羟基和碳酸盐矿物的吸收特征, 提高矿物信息提取精度.通过模拟单像元内新鲜植物、干枯植物、羟基和碳酸盐矿物的混合光谱, 发现在一定波段范围内4种端元的特征波段处吸收深度呈显著线性关系, 并建立了羟基和碳酸盐矿物的植物校正吸收深度(vegetation corrected continuum depths, VCCD)模型.将模型应用于黑龙江呼玛的Hyperion影像, 提取了高岭石和方解石矿物信息.在去除河床、道路等干扰信息后, 经野外实地验证和室内岩石鉴定, 矿物信息提取结果较好.
- 高光谱 /
- 连续统去除 /
- 遥感 /
- 羟基/碳酸类矿物含量 /
- 植被 /
- Hyperion
Abstract: The objective of this study is to enhance the absorption feature of hydroxyl and carbonate minerals, and to improve the precision of the minerals information extraction in the vegetation covered area. The linear mixing spectra of a pixel containing a hydroxyl/carbonate mineral, green and dry vegetation has been simulated. When a fixed wavelength range is considered, continuum removed absorption depths for diagnostic absorption features of three end-members show significantly linear relation. The vegetation corrected continuum depths (VCCD) model was established to detect hydroxyl or carbonate mineral, which was tested with hyperspectral data (Hyperion) collected at Huma in Xiaoxing'anling, China. Comparing the extracting mineral results and field samples of rock, it is found that the extracting minerals information correspond with that of the polished section of mineral, but the disturbance information is found in the river bed or along the road.
- hyperspectral /
- continuum removal /
- remote sensing /
- hydroxyl/carbonate mineral content /
- vegetation /
- Hyperion

HTML全文

图 1 混合光谱模拟所使用的光谱端元

Fig. 1. The spectra selected for the synthetic analysis portion of the study

下载: 全尺寸图片幻灯片

图 2 绿色和干枯植物对2.200 μm/2.335 μm处吸收深度的响应

图中0.670 μm、2.135 μm、2.200 μm和2.335 μm分别代表绿色植物、干枯植物、高岭土和方解石的特征吸收波长

Fig. 2. Response of 2.200 μm/2.335 μm continuum removed band depth to green and dry vegetation

下载: 全尺寸图片幻灯片

图 3 黑龙江呼玛Hyperion影像矿化蚀变信息(绿色部分)

a.方解石；b.高岭石

Fig. 3. Mineralized Alteration-Information from Hyperion data in Huma, Heilongjiang

下载: 全尺寸图片幻灯片

图 4 方解石提取结果野外验证

Fig. 4. The field verification of calcite extraction result

下载: 全尺寸图片幻灯片

表 1 4种端元的连续统去除范围和中心波长

Table 1. The center wavelength and left and right wavelength extent of the four spectral used for continuum remove

端元	中心波长(μm)	左肩(μm)	右肩(μm)
绿色植物	0.670 0	0.551 0	0.751 0
干枯植物	2.135 0	2.035 0	2.195 0
羟基矿物	2.205 0	2.135 0	2.245 0
碳酸岩矿物	2.335 0	2.215 0	2.400 0

下载: 导出CSV

表 2 VCCD模型的检验系数和拟合系数

Table 2. The calculated calibration statistics for the VCCD model

系数	高岭土	方解石
R²	0.914 2	0.978 1
P	0.001 0	0.001 0
A₁	0.408 5	0.314 8
A₂	-0.317 4	0.048 7
A₃	0.936 5	-0.855 9

下载: 导出CSV

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