NDLI: Discrepancy of Extraction of Standing Water between Index Methods and TM5 Thresholding

Content Provider	IEEE Xplore Digital Library
Author	Renzong Ruan Li Zhang
Copyright Year	2010
Abstract	Standing water extent is important information for the management of water resources. In the past, this information was collected by using aerial photos and ground surveys. These traditional methods are time-and cost-consuming. At present, satellite imagery is used for this purpose more and more extensively. In this paper, the western part of Hongze Lake and its adjacent upland were taken as test area. Several methods such as Normalized Difference Water Index (NDWI), Normalized Difference Vegetation Index (NDVI) and single band density slicing were used for the extraction of standing water extent and the results were compared and analyzed. The experiment showed that different methods have different advantages. The results from NDWI and TM5 threshold are nearly similar and reliable. The results from NDVI method were associated with the plants distribution and open water extent can be described by this method. NDWI can suppress the mixed pixels of water and vegetation and wet vegetation. Moreover, the linear water bodies can be delineated continuously. The results from TM5 include more mixed pixels of water and other objects.
Starting Page	331
Ending Page	334
File Size	4121406
Page Count	4
File Format	PDF
ISBN	9781424492473
DOI	10.1109/GCIS.2010.247
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-12-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Satellites discrepancy Vegetation mapping Hongze lake Lakes Indexes extraction standing water NDWI Remote sensing Water resources Pixel
Content Type	Text
Resource Type	Article

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