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AGRICULTURAL LAND CONSOLIDATION VS. LAND FRAGMENTATION IN RUSSIA 俄罗斯农业用地整理与土地分割
IF 1.9 Pub Date : 2021-09-14 DOI: 10.26833/ijeg.919939
A. Sagaydak, A. Sagaydak
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引用次数: 7
Investigating the effect of observation interval on GPS, GLONASS, Galileo and BeiDou static PPP 观测间隔对GPS、GLONASS、Galileo和北斗静态PPP影响的研究
IF 1.9 Pub Date : 2021-09-09 DOI: 10.26833/ijeg.980148
Sermet Öğütcü, A. Shakor, H. Farhan
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引用次数: 5
Determining the relationship between the slope and directional distribution of the UAV point cloud and the accuracy of various IDW interpolation 确定无人机点云的斜率和方向分布与各种IDW插值精度之间的关系
IF 1.9 Pub Date : 2021-09-09 DOI: 10.26833/ijeg.940997
K. Hastaoglu, Sinan Göğsu, Y. Gül
Inverse Distance Weighted (IDW) based interpolation method is also widely used in earth science studies. In the classical IDW method, the directional distribution of the reference points around the point to be estimated within the critical circle and the slope differences are not taken into consideration. On the other hand, in the IDW-based method developed by Shepard, the ratio of the distances of the reference points within the critical circle to the critical circle radius (r), the anisotropy and the slope differences are taken into consideration. In this study, the results of the classical IDW method and Shepard method were compared to increase the accuracy of interpolation produced from UAV data. A software has been developed to make these comparisons in more detail. The classical IDW and Shepard based interpolation methods used in this software takes into consideration the anisotropy, the slope differences and the ratio of the distances to the critical circle radius. In this study, UAV flights were performed in three different study areas with different topographic features and 3D point cloud data were obtained in order to make detailed analyzes. Using developed software, data from three different study areas have been tested and the results from different Shepard interpolation models have been discussed. The major contribution of this paper is in evaluation of various IDW options when applied to UAV point data. As a result, especially in geodetic studies form UAV data, it was observed that the results improved with 11% to 37% by using the Shepard method with the suitable power parameter value considering the directional distribution of the reference points in the critical circle and the slope differences.
基于逆距离加权(IDW)的插值方法在地球科学研究中也得到了广泛的应用。在经典IDW方法中,没有考虑临界圆内待估计点周围参考点的方向分布和斜率差。另一方面,在Shepard开发的基于IDW的方法中,考虑了临界圆内参考点的距离与临界圆半径的比率(r)、各向异性和斜率差异。在本研究中,将经典IDW方法和Shepard方法的结果进行了比较,以提高无人机数据插值的精度。已经开发了一个软件来更详细地进行这些比较。该软件中使用的基于IDW和Shepard的经典插值方法考虑了各向异性、斜率差以及距离与临界圆半径的比值。在本研究中,无人机在具有不同地形特征的三个不同研究区域进行了飞行,并获得了三维点云数据,以便进行详细分析。使用开发的软件,对来自三个不同研究领域的数据进行了测试,并讨论了不同Shepard插值模型的结果。本文的主要贡献是对应用于无人机点数据的各种IDW选项进行评估。因此,特别是在无人机数据的大地测量研究中,观察到,考虑到参考点在临界圆中的方向分布和斜率差异,使用具有适当功率参数值的Shepard方法,结果改进了11%至37%。
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引用次数: 2
Evaluating bank erosion and identifying possible anthropogenic causative factors of Kirtankhola River in Barishal, Bangladesh: an integrated GIS and Remote Sensing approaches 孟加拉国巴里沙尔Kirtankhola河河岸侵蚀评估和可能的人为成因识别:GIS和遥感综合方法
IF 1.9 Pub Date : 2021-08-03 DOI: 10.26833/ijeg.947493
S. Rahman, Md. Muzahidul Islam, Md Abdullah Salman, Muhammad Risalat Rafiq
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引用次数: 5
The effect of tourism and legalization policies on summer pasture in Turkey 土耳其夏季牧场旅游与合法化政策的影响
IF 1.9 Pub Date : 2021-07-03 DOI: 10.26833/ijeg.927503
F. Döner
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引用次数: 2
Multithreaded Wedge Detection Method on Triangular 3D CAD Objects using Mesh Traversal Method 基于网格遍历法的三维CAD三角对象多线程楔体检测方法
IF 1.9 Pub Date : 2021-06-25 DOI: 10.26833/ijeg.947235
Özkan Kirik, C. Özdemir
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引用次数: 0
An analysis on the corrosion of a cultural heritage 文化遗产的腐蚀分析
IF 1.9 Pub Date : 2021-06-25 DOI: 10.26833/ijeg.891616
Ömer Bozdoğan, Aydan Yaman, H. M. Yılmaz
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引用次数: 4
Automatic extraction of the polygon obtained by the intersection of parcels with the help of geometric algorithms 利用几何算法自动提取由地块交点得到的多边形
IF 1.9 Pub Date : 2021-06-14 DOI: 10.26833/ijeg.886819
Emirhan Özdemir, Faruk Yildirim, F. Kadi
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引用次数: 0
Divide and Conquer Object Detection (DACOD) Method for Runway Detection in Remote Sensing Images 分治目标检测方法在遥感图像跑道检测中的应用
IF 1.9 Pub Date : 2021-06-10 DOI: 10.26833/ijeg.937061
Atakan Körez
of The Art (SOTA) object detection models using the same dataset.
使用相同数据集的现有技术(SOTA)对象检测模型。
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引用次数: 1
ACCURACY ASSESSMENT OF DIGITAL SURFACE MODELS FROM UNMANNED AERIAL VEHICLES’ IMAGERY ON ARCHAEOLOGICAL SITES 考古遗址无人机图像数字地表模型的精度评估
IF 1.9 Pub Date : 2021-06-01 DOI: 10.26833/ijeg.696001
Emre Şenkal, Gordana Kaplan, U. Avdan
With the developing technologies, the use of unmanned aerial vehicles’s (UAV) is increasing in all areas. Compared with the conventional photogrammetry and remote sensing sensors, UAVs are more convenient to collect data for small areas. In this study, the accuracy of UAV products was investigated in the archeological area of Eskisehir Şarhoyuk. In order to produce reference data for the orthophoto and DTM accuracy analysis, a digital map from the test area was produced using in-situ measurements. Also, for the comparison of the point cloud, a small test area was determined and reference point cloud data was collected with terrestrial laser scanner. The comparison of the results showed significant difference between the UAV images and images collected by conventional methods. Thus, while there was 1 m difference between the data without the use of control points, and the use of control points significantly improved the results.
随着技术的发展,无人驾驶飞行器在各个领域的应用越来越广泛。与传统的摄影测量和遥感传感器相比,无人机更便于在小范围内采集数据。本研究在Eskisehir Şarhoyuk考古区域对无人机产品的精度进行了调查。为了为正射影像仪和DTM精度分析提供参考数据,使用原位测量生成了测试区域的数字地图。此外,为了对点云进行对比,确定了一个小的测试区域,并利用地面激光扫描仪收集了参考点云数据。结果表明,无人机图像与常规方法采集的图像存在显著差异。因此,虽然没有使用控制点的数据之间有1 m的差异,但使用控制点显著改善了结果。
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引用次数: 46
期刊
International Journal of Engineering and Geosciences
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