测绘通报 ›› 2022, Vol. 0 ›› Issue (5): 20-25.doi: 10.13474/j.cnki.11-2246.2022.0135

• 水体变化遥感监测 • 上一篇    下一篇

一种基于Landsat 8的多波段组合水体指数模型

王春霞1, 张俊1, 李屹旭2, 范成成3   

  1. 1. 贵州大学矿业学院, 贵州 贵阳 550000;
    2. 贵州大学农学院, 贵州 贵阳 550000;
    3. 贵州工程应用技术学院矿业工程学院, 贵州 毕节 551700
  • 收稿日期:2021-04-23 修回日期:2022-01-28 发布日期:2022-06-08
  • 通讯作者: 张俊。E-mail:jzhang13@gzu.edu.cn
  • 作者简介:王春霞(1996-),男,硕士生,研究方向为遥感信息提取及反演。E-mail:1821851037@qq.com
  • 基金资助:
    贵州省科学技术基础研究计划(黔科[2017]1054);国家自然科学基金(41701464);贵州大学研究生创新基地建设项目(贵大研CXJD[2014]002);贵州省高校青年科技人才成长项目(黔教合KY字[2022]132号)

A multi-band combination water index model based on Landsat 8

WANG Chunxia1, ZHANG Jun1, LI Yixu2, FAN Chengcheng3   

  1. 1. College of Mining, Guizhou University, Guiyang 550000, China;
    2. College of Agriculture, Guizhou University, Guiyang 550000, China;
    3. College of Mining Engineering, Guizhou University of Engineering Science, Bijie 551700, China
  • Received:2021-04-23 Revised:2022-01-28 Published:2022-06-08

摘要: 本文通过分析水体在Landsat 8数据中可见光波段和近红外波段的波谱差异,将Landsat 8数据中可见光波段作为一组,近红外波段和中红外波段作为另一组,构建了多波段组合水体指数(MBCWI)模型。基于Landsat 8数据在合肥、安康和康定地区共3景数据5种不同场景进行水体提取试验。结果表明,该模型不仅能够抑制云层、阴影、裸土、亮色地物和建筑物等对水体提取的影响,还能较好地提取出含有大量蓝藻的水体,且阈值稳定,Kappa系数优于0.968 5,总体精度高达99.69%,总体误差小于8.92%。相较于其他水体指数而言,提取精度显著提高。

关键词: 水体提取, 多波段组合, 水体指数, Landsat 8, 精度验证

Abstract: In this paper, by analyzing the spectral difference between the visible light band and the near-infrared band in the Landsat 8 data, the visible light band in the Landsat 8 data is taken as one group, and the near-infrared band and the mid-infrared band are taken as another group, and a multi-band combination water index (MBCWI) model is constructed. Based on Landsat 8 data, water extraction experiments were carried out in Hefei, Ankang and Kangding areas with a total of 3 scene data and 5 different scenarios. The results show that the model can not only suppress the influence of clouds, shadows, bare soil, bright-colored ground objects and buildings on water extraction, but also can extract water containing a large number of cyanobacteria well, and the threshold is stable, and the Kappa coefficient is better than 0.968 5, the overall accuracy is as high as 99.69%, and the overall error is less than 8.92%. Compared with other water indices, the extraction accuracy is significantly improved.

Key words: water extraction, multi-band combination, water index, Landsat 8, accuracy verification

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