Results 161 to 170 of about 6,838 (207)
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Monitoring of dynamic wetland changes using NDVI and NDWI based landsat imagery

Remote Sensing Applications: Society and Environment, 2021
Abstract Recent initiatives using the GIS tools for mapping and analysis of wetland dynamics bring the hope for an effective wetland management. Degraded or modified wetlands are more sensitive and less resilient to the climate change. This paper focusses on a study of water bodies in Sirmaur District, Uttarakhand, India with the special focus on ...
Amgoth Ashok   +2 more
openaire   +2 more sources

Spatial and temporal variation in NDVI and NDWI of the Ukhma River Basin, Central India

open access: yesJOURNAL OF SCIENTIFIC RESEARCH, 2022
The present study is a reasonable step on quantitative approaches of water management and advancement of groundwater potential for watershed development of the Ukhma River Basin with the help of remote sensing and GIS techniques. The Ukhma River is one of the significant NW (north-west) flowing tributaries of the Tons River in Central India occupying a
S. Singh   +3 more
openaire   +2 more sources

NDWI-DeepLabv3+: High-Precision Extraction of Water Bodies from Remote Sensing Images

2020 The 3rd International Conference on Machine Learning and Machine Intelligence, 2020
How to efficiently and accurately extract water bodies from remote sensing images is the focus of scholars' research. Current research often does not make full use of the unique multi-band data of remote sensing images. This paper proposes an improved NDWI-DeepLabv3+ network to improve the accuracy of water body extraction, especially from urban remote
Yuhao Peng   +4 more
openaire   +2 more sources

Modification of normalised difference water index (NDWI) to enhance open water features in remotely sensed imagery

open access: yesInternational Journal of Remote Sensing, 2006
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
Hanqiu Xu
exaly   +2 more sources

An Optimized Approach for Extracting Urban Land Based on Log-Transformed DMSP-OLS Nighttime Light, NDVI, and NDWI

open access: yesRemote Sensing, 2021
Quantitative and accurate urban land information on regional and global scales is urgently required for studying socioeconomic and eco-environmental problems.
Yuanmao Zheng   +2 more
exaly   +2 more sources

Domain Adaptation using NDWI index for Water-land Semantic Segmentation

The 2021 3rd International Conference on Big Data Engineering, 2021
Recently, deep-learning based method has achieved great success in remote sensing image segmentation. Deep neural networks for semantic segmentation always require a large number of samples, which becomes a tough problem especially in remote sensing area.
Cheng Gu, Wenxin Hu, Wei Zheng
openaire   +1 more source

Water Body Detection Analysis Using NDWI Indices Derived from Landsat-8 OLI

open access: yesPolish Journal of Environmental Studies, 2020
Normalized different water indices (NDWIs) derived from satellite images are commonly and successfully utilized in surface water body detection and mapping.
Emre Ozelkan
exaly   +2 more sources

Use of Time-Series NDWI to Monitor Emerging Archaeological Sites: Case Studies from Iraqi Artificial Reservoirs

open access: yesRemote Sensing, 2021
Over the last 50 years, countries across North Africa and the Middle East have seen a significant increase in dam construction which, notwithstanding their benefits, have endangered archaeological heritage.
Andrea Titolo
exaly   +2 more sources

Mariculture Zones Extraction Using NDWI and NDVI

Advanced Materials Research, 2013
On the analysis of spectral characteristics of Aoshan remote sensing images, we find the spectral differences between mariculture zones and other surface features. This paper combines normalized difference water index with mariculture zones distribution planning to complete the extraction and the statistics of the mariculture zones, in order to ...
Hong Jun Pan   +3 more
openaire   +1 more source

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