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首页> 外文期刊>International journal of remote sensing >Modification of normalised difference water index (NDWI) to enhance open water features in remotely sensed imagery
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Modification of normalised difference water index (NDWI) to enhance open water features in remotely sensed imagery

机译：修改归一化差水指数（NDWI）以增强遥感影像中的开阔水域特征

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摘要

The normalized difference water index (NDWI) of McFeeters (1996) was modified by substitution of a middle infrared band such as Landsat TM band 5 for the near infrared band used in the NDWI. The modified NDWI (MNDWI) can enhance open water features while efficiently suppressing and even removing built-up land noise as well as vegetation and soil noise. The enhanced water information using the NDWI is often mixed with built-up land noise and the area of extracted water is thus overestimated. Accordingly, the MNDWI is more suitable for enhancing and extracting water information for a water region with a background dominated by built-up land areas because of its advantage in reducing and even removing built-up land noise over the NDWI.
机译：McFeeters（1996）的归一化差水指数（NDWI）通过将中红外波段（如Landsat TM波段5）替换为NDWI中使用的近红外波段进行了修改。改进的NDWI（MNDWI）可以增强开放水域特征，同时有效地抑制甚至消除堆积的土地噪声以及植被和土壤噪声。使用NDWI增强的水信息通常会与堆积的土地噪声混合在一起，因此高估了提取水的面积。因此，与NDWI相比，MNDWI更具有减少甚至消除已建土地噪声的优势，因此它更适合于增强和提取背景为已建土地面积的水域的水信息。

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  • 来源
    《International journal of remote sensing》 |2006年第14期|p.3025-3033|共9页
  • 作者

    HANQIU XU;

  • 作者单位

    College of Environment and Resources, Fuzhou University;

    Key Laboratory of Data Mining and Sharing, China's Ministry of Education;

    Fuzhou, Fujian 350002, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 遥感技术;
  • 关键词

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