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LANDSAT image
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Nghiên cứu đã sử dụng mô hình CA-Markov như một công cụ hỗ trợ để phân tích và dự báo xu hướng thay đổi thảm phủ/sử dụng đất (LULC) trong đó có lớp phủ rừng tại tỉnh Đắk Nông. Đầu tiên nghiên cứu đã so sánh độ chính xác của phương pháp phân loại theo hướng đối tượng OBIA (Object Based Image Analysis) và phân loại dựa vào pixel MLC (Maximum Likelihood Classification) để phân loại ảnh vệ tinh Landsat năm 2017.
12p
viamancio
03-06-2024
4
2
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The study results show inter-relationships and transformations of the three indicators in the research context, where urban land temperature and Urban Heat Island (UHI) are raised by built-up areas and in contrast, reduced by vegetated areas. As a result, urban green space would be a driver to mitigate the harmful impact of the "heat island" effect in urban areas. Aim to strengthen concentrated green areas and vegetation in land areas that are less favorable for construction.
11p
dianmotminh02
03-05-2024
4
1
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Study "Estimation of land surface temperature and vegetation dryness index (TVDI) in Bac Binh - Binh Thuan using remote sensing images" aim to determine the progress of drought through the years in Bac Binh district - Binh Thuan province by using remote sensing images. In detail, we use images from Landsat 7 ETM+ (2002, 2005, 2010) and Landsat 8 OLI (2014 and 2017) to estimate dryness indices: temperature vegetation dryness index (TVDI) and improved temperature vegetation dryness index.
15p
tukhauquantuong1011
22-04-2024
2
2
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The study "Application of remote sensing and GIS to establish surface temperature map of Phu Tho province" used Landsat 8 images to calculate the surface temperature of Phu Tho province. The data used in the study are Landsat 8 images combined with geographical data of the area. Calculation results of Phu Tho province’s surface temperature range from 26.79-46.32°C. Places with high temperatures are concentrated in the city. Viet Tri is a place with high population density and rapid urbanization. The temperature in the high mountains is relatively cool.
6p
tukhauquantuong1011
22-04-2024
4
2
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This paper presents the effects of hillshade on the spectral values of Landsat and application of remote sensing image indices to reduce the influence of topography. This research uses the calibrated Landsat 8 images that are provided by the Center for Science and Earth Observation, known as the Earth Resources Observation and Science (EROS), the United States Geological Survey (USGS).
9p
vilarry
01-04-2024
1
1
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This study aims to investigate relevant policies in study site from 1990 to 2016 using multi-temporal Landsat images; to assess the effectiveness of policies on coastal mangrove management using three major indicators; and then to propose feasible solutions to enhance the policies in this area.
12p
vilarry
01-04-2024
2
1
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In this study, we mapped and evaluated LULC changes in Huong Hoa district, Quang Tri province, over a period of 10 years based on Landsat 8 satellite image data processed on ArcGIS software. On that basis, we carried out the simulation of the LULC change for 2033 using the QGIS MOLUSCE plugin.
13p
viritesh
02-04-2024
7
1
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Nghiên cứu "Đánh giá độ chính xác của các phương pháp phân loại thảm phủ dựa trên ảnh Sentinel-2 và Landsat 9" nhằm so sánh kết quả phân loại thảm phủ tại địa bàn huyện Trảng Bom, tỉnh Đồng Nai năm 2022 dựa trên ảnh vệ tinh Sentinel-2 và Landsat 9 bằng phương pháp Object Based Image Analysis (OBIA) và Maximum Likelihood Classification (MLC).
10p
kimphuong1130
28-09-2023
7
3
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This study developed an automated depth mapping methodology based on the surface reflection datasets of Landsat 8 and Sentinel-2 satellite imagery in Google Earth Engine. The study was conducted in the area of Co To island, Co To district, Quang Ninh province.
10p
viengels
25-08-2023
5
3
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This study investigates the relationship between AOD variation and different land use/land cover (LULC) types. These LULC types were first classified from Landsat 9 images using the maximum likelihood classification (MLC) method. The AOD variation for each LULC type acquired from MODIS imagery was then extracted using the mask method.
12p
viengels
25-08-2023
4
3
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Vietnam experiences increasing droughts throughout the dry season due to climate change, global warming, and human-caused activities like urbanization and deforestation. Drought hazard significantly impacts socioeconomic, agriculture, and the environment; it directly threatens human lives, livelihoods, food security, and environmental degradation.
13p
viberkshire
09-08-2023
4
3
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This study demonstrated an approach for mapping land-use/land-cover by combining Landsat-8 images with a high-quality reference dataset in a classification model using the Support Vector Machine algorithm.
8p
vinebula
02-06-2023
6
2
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In this article, the author proposes that Landsat images should be pre-processed using the DOS method for atmospheric correction and the Gram-Schmidt method for image enhancement. According to the results, the overall classification accuracy of multi-temporal images achieved over 85%, and Landsat images are suitable for classifying land cover on small islands in Truong Sa Islands, such as Subi Reef.
10p
vimclaren
20-10-2022
10
2
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Analysis of land use maps will provide important information upon which most management and intervention policies rely. In this study, the land use of Kon – Ha Thanh rivers catchment is mapped from 1990 to 2017 using remote sensing and geographic information system (GIS).
4p
vichristinelagarde
04-07-2022
11
1
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Although land use/land cover (LULC) information plays a critical role in the maintenance of living standards with a balance among environment, development and sustainability, it remains little comprehensive understanding in the Vietnamese Mekong Delta.
11p
vimegwhitman
10-06-2022
11
1
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There is a strong linkage between river morphology and river floods. Hence, this study focuses on detecting changes in the shoreline of the Nhat Le river mouth by using a series of optical satellite images (Landsat and Sentinel-2).
10p
viedison
13-04-2022
10
1
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The objectives of this study are to (i) map the diversity of wetlands in the Ogou River basin, and (ii) analyze the wetland habitat fragmentation at the landscape level in the study area. First, three images from Landsat 8 of 2017 and 2018 were used for wetland mapping in ENVI 4.7 software. The unsupervised classification ISODATA were used after a color composition based on neochannels.
10p
thebadguys
15-01-2022
10
0
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The proposed approach consists of two steps: (1) a new CyanoHAB spectral index called Broad Wavelength Algae Index (BWAI) is developed for fine-but-sparse (Landsat) and coarse-but-frequent (MODIS) satellite images, and (2) the Landsat and MODIS derived BWAI images are fused by the Robust Adaptive Spatial and Temporal Fusion Model (RASTFM) to generate fine-and-frequent Landsat-like BWAI images.
19p
thebadguys
15-01-2022
19
2
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This paper presents the comprehensive dataset of satellite data, shoreline detection methodology, and shoreline changes in the coast of Haiphong province from 1987 to 2018. Landsat satellite images from 1987 to 2018 were gathered.
10p
meyerowitz
25-12-2021
10
0
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Using remotely sensed data to identify burnt forest areas produces fast, economical, and highly accurate results. Accordingly, in this study we investigate the capabilities of Göktürk-2, Turkey’s national satellite, for mapping burnt forest areas. We compare our results with those obtained from Landsat-8 and Worldview-2 satellite images, which are frequently used for mapping burnt areas. The capabilities of the satellites are compared, in terms of detecting burnt forest areas, using support vector machine (SVM) and rotation forest (RF) classification.
11p
hanthienngao
30-11-2021
11
2
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