TAVI与地形校正后NDVI抗地形影响比较
Topographic elimination performance comparison between TAVI and NDVI after topographic correction
黄海明 1江洪 1曹小杰1
作者信息
- 1. 福州大学地理空间信息技术国家地方联合工程研究中心,空间数据挖掘与信息共享教育部重点实验室,福建省空间信息工程研究中心,福建 福州 350116
- 折叠
摘要
为了比较TAVI与地形校正方法的抗地形效果,利用福建省福州市连江县地区Landsat 8 OLI卫星数据,配合使用相对应的DEM数据,采用目前广泛运用的C校正、SCS+C校正、SCS校正、Cosine校正等4种地形校正方法.从校正后影像的目视分析、均值和标准差参数的统计结果,太阳入射角余弦值与影像各波段的相关性等方面对校正结果进行了对比分析.选取最优的C校正模型,计算校正结果的NDVI,从多方面与TAVI进行抗地形效果的对比,得出TAVI的抗地形效果最好.
Abstract
In order to compare the topographic elimination performance between TAVI and topographic correction method, applying Landsat 8 OLI image data and DEM data of Lianjiang district in Fuzhou, Fujian Province, with four topographic correction models, like C correction model, SCS+C correction model, SCS correction model, Cosine correction model. From the visual analysis, mean value and standard deviation parameters of the corrected image, the correlation between the cosine of the incident angle of the sun and the correlation of each band of the image is analyzed. The optimal C calibration model was selected to calculate NDVI of the correction results. Contrast topographic elimination per-formance from several aspects, the results show that the topographic elimination performance of TAVI is better than C correction.
关键词
地形校正/地形调节植被指数/C校正模型/福建省Key words
topographic correction/topography-adjusted vegetation index/C correction model/Fujian Province引用本文复制引用
基金项目
国家自然科学基金资助项目(41401488)
福建省自然科学基金资助项目(2017J01658)
出版年
2017
国家科技期刊平台
NSTL
维普
万方数据