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水资源的遥感和监测:对不同指数和值方法的比较研究

Mehmet Akif Günen¹, Umit Haluk Atasever²

¹Department of Geomatics Engineering, Faculty of Engineering and Natural Sciences, Gümüşhane University, 29100 Gümüşhane, Turkiye.

The Science of the total environment

|April 2, 2024

概括

修改后的规范差异水指数 (MNDWI) 和规范差异水指数 (NDWI) 对于从卫星图像中提取水特征是有效的. 最低值方法被证明是最有效的水体检测在不同的湖泊环境.

科学领域:

地球和环境科学地球和环境科学
遥感和地理空间分析
水文学的水文学

背景情况:

水资源对生态平衡和人类文明至关重要,需要有效的监测方法.
遥感,特别是卫星图像,提供了一种实用的方法来跟踪水体及其对环境变化的反应.
沿海湖区是气候对水结构影响的敏感指标.

研究的目的:

评估各种水指数 (WRI,NWI,MNDWI,NDWI) 在提取水的有效性.
评估多种自动值方法在应用于卫星衍生水指数时的性能.
通过使用Landsat-9 OLI-2数据,确定各种湖泊环境的最稳健的水指数和值技术.

主要方法:

分析Landsat-9 OLI-2卫星图像对三个不同的土耳其湖泊进行分析:纳兹克,伊兹尼克和贝什希尔.
四个水指数的应用和比较:水比指数 (WRI),规范化水指数 (NWI),修改规范化差异水指数 (MNDWI) 和规范化差异水指数 (NDWI).
评估16种自动全球值方法,包括K-Means,Otsu's和最小误差,与选定的水指数结合使用.

主要成果:

修改后的规范化差异水指数 (MNDWI) 在所有研究的湖泊中显示出各种值提取水的方法的稳定性.
确定了MNDWI和规范差异水指数 (NDWI) 作为水特征提取的可靠指数.
最低值方法表现出卓越的性能,在不同湖泊中实现了高峰信号噪声比 (PSNR) 和结构相似度指数 (SSIM) 值.

结论:

推MNDWI和NDWI用于在各种湖泊环境中提取水特征,选择受值方法和湖泊特征的影响.
最低值技术对于水体检测非常有效,提供可靠的结果.
通过遥感精确的水资源监测对于了解环境动态和为水资源管理策略提供信息至关重要.

关键词:

陆地卫星9号陆地卫星9号值方法是指使用值方法.水体是一个水体.水的指数水的指数.

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