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A comprehensive analysis of different geometric correction methods for Pleiades -1A and Spot-6 satellite images Pleiades -1A和Spot-6卫星图像不同几何校正方法的综合分析
IF 1.9 Pub Date : 2022-05-14 DOI: 10.26833/ijeg.1086861
Buğrahan Özci̇han, Levent Doğukan Özlü, Mümin İlker Karakap, Halime Sürmeli̇, U. Alganci, Elif Sertel
Satellite images have been widely used in the production of geospatial information such as land use and land cover mapping, as well as the generation of several thematic layers via image processing. Images acquired by sensors onboard various satellite platforms are influenced by systematic sensor and platform-induced geometry errors. Thus, geometric correction of satellite images is an important step of image pre-processing to extract accurate and reliable locational information. Geometric correction of satellite images obtained from two different satellites, Pleiades 1A (PHR) and SPOT-6, was performed within the scope of this study using empirical models and a physical model. The 2D polynomial model, 3D rational function model with calculated RPCs from GCPs, 3D rational function model with RPCs from satellite, RPC refinement model using GCPs, and Toutin's physical model were used within this scope. Several experiments were carried out to investigate the effects of various parameters on the performance of the geometric correction procedure, such as GCP reference data source, GCP number and distribution, DEM source, spatial resolution, and model. Our results showed that lower RMSE values can be achieved with the model that uses RPC from data providers for PHR and SPOT that is followed by the RPC refinement method for PHR and Toutin method for SPOT. In general, GCPs from the HGM data source and ALOS DEM combination provided better results. Lastly, lower RMSE values, thus better locational accuracies are observed with PHR image except for single test.
卫星图像已广泛应用于土地利用和土地覆盖测绘等地理空间信息的制作,以及通过图像处理生成若干专题层。各种卫星平台上的传感器获取的图像受到系统传感器和平台引起的几何误差的影响。因此,卫星图像的几何校正是图像预处理中提取准确可靠的位置信息的重要步骤。利用经验模型和物理模型对Pleiades 1A (PHR)和SPOT-6两颗不同卫星获得的卫星图像进行几何校正。在此范围内使用了二维多项式模型、三维有理函数模型和基于gcp计算的RPC、三维有理函数模型和基于卫星的RPC、基于gcp的RPC细化模型以及Toutin的物理模型。通过实验研究了GCP参考数据源、GCP数量和分布、DEM源、空间分辨率和模型等参数对几何校正过程性能的影响。我们的研究结果表明,使用PHR和SPOT数据提供者的RPC,然后使用PHR的RPC细化方法和SPOT的Toutin方法,可以获得较低的RMSE值。总体而言,来自HGM数据源的gcp和ALOS DEM组合提供了更好的结果。最后,除了单次测试外,PHR图像的RMSE值更低,因此定位精度更高。
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引用次数: 0
Genesis and Spatio-Temporal Analysis of Glacial Lakes in the Peri-Glacial Environment of Western Himalayas 西喜马拉雅地区冰期环境冰湖成因及时空分析
IF 1.9 Pub Date : 2022-05-14 DOI: 10.26833/ijeg.1097912
Fareeha Si̇ddi̇que, A. Rahman
Glaciers are retreating in the highest mountainous regions of the world as a result of climate change and global warming. This leads to the formation of different types of glacial lakes. These lakes are not only the source of fresh water but it also causes disaster in the form of Glacial Lake Outburst Flood (GLOF). Astore Drainage Basin is located in north eastern mountainous region of Himalayas. This area is prone to GLOFs because of the increasing number of glacial lakes and the growth of existing lakes as a result of global warming. To provide a detailed information about the spatial and temporal information of glacial lakes detailed inventories has been developed for the study area using Landsat images for the year 1989, 1999, 2009 and 2019. Glacial lakes were mapped and identified by using Normalized Different Water Index, Normalized Difference Snow Index and high resolution Google Earth images. It was found from the analysis that the number of the glacial lakes increased from 120 to 128 in a period of thirty years (i.e. from 1989 to 2019). During the study period two lakes disappeared whereas ten new lakes were formed. There were 21 lakes which show area expansion more than 100% representing high susceptibility for GLOF. The results also showed that smaller lakes expanded more rapidly in area than the larger lakes.
由于气候变化和全球变暖,世界上最高的山区的冰川正在消退。这导致了不同类型的冰川湖的形成。这些湖泊不仅是淡水的来源,而且还以冰川湖爆发洪水(GLOF)的形式引发灾难。阿斯托雷流域位于喜马拉雅山脉东北山区。由于全球变暖导致冰川湖的数量不断增加和现有湖泊的增长,该地区容易出现GLOF。为了提供冰川湖空间和时间信息的详细信息,已使用1989年、1999年、2009年和2019年的陆地卫星图像为研究区域编制了详细清单。利用归一化差异水指数、归一化差异雪指数和高分辨率谷歌地球图像绘制和识别冰川湖。分析发现,在三十年的时间里(即1989年至2019年),冰川湖的数量从120个增加到128个。在研究期间,两个湖泊消失,而十个新的湖泊形成。有21个湖泊显示面积扩展超过100%,这代表着GLOF的高易感性。结果还表明,较小的湖泊在面积上比较大的湖泊扩张得更快。
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引用次数: 0
Performance analysis of rule-based classification and deep learning method for automatic road extraction 基于规则分类和深度学习方法的道路自动提取性能分析
IF 1.9 Pub Date : 2022-02-25 DOI: 10.26833/ijeg.1062250
Z. Bayramoğlu, M. Uzar
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引用次数: 4
Investigation and modeling of physical development of urban areas and its effects on light pollution using night light data 利用夜光数据对城市物理发展及其对光污染影响的调查和建模
IF 1.9 Pub Date : 2022-02-15 DOI: 10.26833/ijeg.976495
S. Bagheri, S. Karimzadeh, B. Feizizadeh
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引用次数: 3
Design of Ultra-Wide Band, Dual-Polarized Quad Ridged Horn Antenna for Obstacle Penetrating Radar Imaging Applications 障碍物穿透雷达成像用超宽带双极化四脊喇叭天线设计
IF 1.9 Pub Date : 2022-02-04 DOI: 10.26833/ijeg.1053213
B. Yılmaz
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引用次数: 0
A Fuzzy Multi-Criteria Decision-Making approach for the assessment of forest health applying Hyper Spectral Imagery: A case study from Ramsar forest, North of Iran. 应用高光谱图像评价森林健康的模糊多准则决策方法——以伊朗北部拉姆萨尔森林为例
IF 1.9 Pub Date : 2022-02-03 DOI: 10.26833/ijeg.940166
Behnam Khorrami, Khalil Valizadeh Kamran
The hyperspectral images have so far been widely utilized in monitoring and detecting the changes in a broad range of environmentally related matters. The hyperspectral image analysis yields maps that show spatial dispersion of physical and ecological characteristics of the terrain. Within the scope of the current study, an integrated Fuzzy-MCDM in a Geographic Information Systems (GIS) platform was used to map the health condition of Ramsar forest. Spectral indices can provide different methods for identifying vegetation coverings. For forest health analysis, spectral indices such as NDWI, CRI1, PSRI, PRI
迄今为止,高光谱图像已广泛应用于监测和探测各种环境相关事项的变化。高光谱图像分析产生的地图显示了地形的物理和生态特征的空间分散。在本研究的范围内,利用地理信息系统(GIS)平台中的模糊- mcdm集成来绘制拉姆萨尔森林的健康状况。光谱指数可以为识别植被覆盖度提供不同的方法。森林健康分析采用NDWI、CRI1、PSRI、PRI等光谱指数
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引用次数: 3
Using Multiple Linear Regression To Analyze Changes in Forest Area: The case study of Akdeniz Region 多元线性回归分析森林面积变化——以阿克德尼兹地区为例
IF 1.9 Pub Date : 2022-02-03 DOI: 10.26833/ijeg.976418
N. Basaran, Dilek Küçük Matcı, U. Avdan
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引用次数: 2
A linear approach for wheat yield prediction by using different spectral vegetation indices 利用不同光谱植被指数预测小麦产量的线性方法
IF 1.9 Pub Date : 2022-02-03 DOI: 10.26833/ijeg.1035037
Y. Kaya, N. Polat
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引用次数: 5
Synoptic Analysis of The January 2004 Snowstorm: Example of Çanakkale 2004年1月暴雪天气分析:以Çanakkale为例
IF 1.9 Pub Date : 2022-01-23 DOI: 10.26833/ijeg.988115
Z. Acar, Mahmut Eşsi̇z
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引用次数: 0
Estimating Chlorophyll Content of Zizania latifolia with Hyperspectral data and Random Forest 利用高光谱数据和随机森林估算紫穗槐叶绿素含量
IF 1.9 Pub Date : 2022-01-19 DOI: 10.26833/ijeg.953188
A. Y. Nofrizal, Rei Sonobe, Yamashita Hiroto, A. Morita, Takashi Ikka
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引用次数: 3
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International Journal of Engineering and Geosciences
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