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การประมาณค่าผลผลิตของข้าวโพดเลี้ยงสัตว์ด้วยภาพถ่ายทางอากาศร่วมกับดัชนีพืชพรรณ NDVI
2023Journal of Applied Research on Science and Technology (JARST), 22, 1, 27 ...
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NDVI Computation from Hyperspectral Images
2023 13th Workshop on Hyperspectral Imaging and Signal Processing: Evolution in Remote Sensing (WHISPERS), 2023Agriculture has witnessed a series technological transformations over time. In recent years, multispectral and hyperspectral satellites have become powerful tools in precision and efficient agricultural practices. Given the richness of information they provide and the fact that multi- and hyperspectral data are not easy to interpret, a consistent ...
Plajer, Ioana Cristina +3 more
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Global correlation analysis for NDVI and climatic variables and NDVI trends: 1982-1990
International Journal of Remote Sensing, 2002The relationship between the Normalized Difference Vegetation Index (NDVI) and climatic variables was analysed on a global scale using the Pathfinder AVHRR Land NDVI data set, and observed climate data for the period 1982-1990. A significant correlation between interannual NDVI and temperature variation was recognized in the northern mid- to high ...
K. Ichii, A. Kawabata, Y. Yamaguchi
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Yukon River Discharge-NDVI Relationship
2020Similar to the Mackenzie River, a strong seasonal consistency between NDVI and discharge exists for Yukon River. The flow-NDVI association is particularly strong before June, discharge rapidly rises and reaches the peak the 1st half of June, while the NDVI in the period of April to June increases fastest and reaches the maximum in July.
Weixin Xu, Daqing Yang
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Sensor intercalibration - adjustment of MODIS-NDVI-to NOAA-AVHRR-NDVI data
IEEE International IEEE International IEEE International Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004, 2004The Normalized Difference Vegetation Index (NDVI) is the most often used vegetation index to study environmental change. Usually, NOAA-Advanced Very High Resolution Radiometer (AVHRR)-data are used to calculate the NDVI, because these data are available for more than 20 years. Today, data with an improved quality like the one of EOS-Moderate Resolution
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Mapping precipitation-corrected NDVI trends across Namibia
Science of The Total Environment, 2019Savannas comprise a major component of the Earth system and contribute ecosystem services and functions essential to human livelihoods. Monitoring spatial and temporal trends in savanna vegetation and understanding change drivers is therefore crucial. Widespread greening has been identified across southern Africa; yet its drivers and manifestations on ...
Vladimir R. Wingate +2 more
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[Performance evaluation of GIMMS NDVI based on MODIS NDVI and SPOT NDVI data].
Ying yong sheng tai xue bao = The journal of applied ecology, 2019The study evaluated GIMMS NDVI based on MODIS NDVI and SPOT NDVI over the same period from 2000 to 2015. We assessed their absolute values, dynamics, trends and cross-relationships between any two of the NDVIs for the national scale, as well as four separate land use types, i.e., paddy field, dry land, forest, and grassland.
Yi Xuan, Zhu +7 more
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NDVI Optimization Using Genetic Algorithm
2011 7th Iranian Conference on Machine Vision and Image Processing, 2011Applying ratioing on multispectral images is one of the important techniques used in remote sensing. In this paper a formula containing multiplication, addition and a division at the end is proposed to calculate a measure for classifying land covers. Applying this formula on each pixel of the multispectral image together with a set of thresholds, one ...
Peyman Kabiri +3 more
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International Journal of Biometeorology, 2013
In this paper, correlations between vegetation dynamics (represented by the normalized difference vegetation index (NDVI)) and hydro-climatological factors were systematically studied in Lake Baiyangdian during the period from April 1998 to July 2008. Six hydro-climatological variables including lake volume, water level, air temperature, precipitation,
Fei, Wang +3 more
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In this paper, correlations between vegetation dynamics (represented by the normalized difference vegetation index (NDVI)) and hydro-climatological factors were systematically studied in Lake Baiyangdian during the period from April 1998 to July 2008. Six hydro-climatological variables including lake volume, water level, air temperature, precipitation,
Fei, Wang +3 more
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