International Journal of Engineering and Geosciences最新文献_第7页

ANECHOIC CHAMBER MEASUREMENTS FOR CIRCULAR ISAR IMAGING AT MERSIN UNIVERSITY’S MEATRC LAB 梅尔辛大学肉类实验室圆形isar成像的消声室测量

IF 1.9

International Journal of Engineering and Geosciences Pub Date : 2020-10-01 DOI: 10.26833/ijeg.649961

S. Demirci, C. Ozdemir

引用次数: 1

FEATURE EXTRACTION FROM SATELLITE IMAGES USING SEGNET AND FULLY CONVOLUTIONAL NETWORKS (FCN) 基于SEGNET和全卷积网络的卫星图像特征提取

IF 1.9

International Journal of Engineering and Geosciences Pub Date : 2020-10-01 DOI: 10.26833/ijeg.645426

Batuhan Sariturk, B. Bayram, Z. Duran, D. Seker

{"title":"FEATURE EXTRACTION FROM SATELLITE IMAGES USING SEGNET AND FULLY CONVOLUTIONAL NETWORKS (FCN)","authors":"Batuhan Sariturk, B. Bayram, Z. Duran, D. Seker","doi":"10.26833/ijeg.645426","DOIUrl":"https://doi.org/10.26833/ijeg.645426","url":null,"abstract":"Object detection and classification are among the most popular topics in Photogrammetry and Remote Sensing studies. With technological developments, a large number of high-resolution satellite images have been obtained and it has become possible to distinguish many different objects. Despite all these developments, the need for human intervention in object detection and classification is seen as one of the major problems. Machine learning has been used as a priority option to this day to reduce this need. Although success has been achieved with this method, human intervention is still needed. Deep learning provides a great convenience by eliminating this problem. Deep learning methods carry out the learning process on raw data unlike traditional machine learning methods. Although deep learning has a long history, the main reasons for its increased popularity in recent years are; the availability of sufficient data for the training process and the availability of hardware to process the data. In this study, a performance comparison was made between two different convolutional neural network architectures (SegNet and Fully Convolutional Networks (FCN)) which are used for object segmentation and classification on images. These two different models were trained using the same training dataset and their performances have been evaluated using the same test dataset. The results show that, for building segmentation, there is not much significant difference between these two architectures in terms of accuracy, but FCN architecture is more successful than SegNet by 1%. However, this situation may vary according to the dataset used during the training of the system.","PeriodicalId":42633,"journal":{"name":"International Journal of Engineering and Geosciences","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45507952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 14

A NEW COLOR DISTANCE MEASURE FORMULATED FROM THE COOPERATION OF THE EUCLIDEAN AND THE VECTOR ANGULAR DIFFERENCES FOR LIDAR POINT CLOUD SEGMENTATION 将欧几里得和矢量角差相结合，提出了一种新的激光雷达点云分割颜色距离测度方法

IF 1.9

International Journal of Engineering and Geosciences Pub Date : 2020-09-19 DOI: 10.26833/ijeg.709212

Ali Saglam, N. Baykan

{"title":"A NEW COLOR DISTANCE MEASURE FORMULATED FROM THE COOPERATION OF THE EUCLIDEAN AND THE VECTOR ANGULAR DIFFERENCES FOR LIDAR POINT CLOUD SEGMENTATION","authors":"Ali Saglam, N. Baykan","doi":"10.26833/ijeg.709212","DOIUrl":"https://doi.org/10.26833/ijeg.709212","url":null,"abstract":"Two important features of the points in the LiDAR point clouds are the spatial and the color features. The spatial feature is mostly used in the point cloud processing field due to its 3D informative and distinctive characteristic. The local geometric difference derived from the spatial features of the points is usually benefited by graph-based point cloud segmentation methods, because the geometric features of the local point groups are highly distinctive. In this paper, we use both the geometric and color differences of the adjacent local point groups at the impact rates 0.3, 0.5, and 0.7 and cooperate the Euclidean and the vector color differences within several averaging techniques for the color difference. The difference forms have been tested within a graph-based segmentation method on four point cloud segmentation datasets, two indoor and two outdoor, using their spatial and color information. The geometric mean as an averaging techniques increases the segmentation success for the all datasets except one outdoor when the color differences are used in the segmentation at the impact rate 0.3, while the harmonic mean increases the success for the all datasets the successes except the other outdoor at the same impact rate. According to the test results, the cooperating of the Euclidean and vector angular color difference measurements can considerable increase the segmentation success on the point clouds with color information in a high quality.","PeriodicalId":42633,"journal":{"name":"International Journal of Engineering and Geosciences","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2020-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43670900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

INTEGRATION OF CUSTOM STREET VIEW AND LOW COST MOTION SENSORS 集成定制街景和低成本的运动传感器

IF 1.9

International Journal of Engineering and Geosciences Pub Date : 2020-06-01 DOI: 10.26833/ijeg.589489

Tolga Bakirman, M. U. Gumusay

引用次数: 2

A RULE-BASED APPROACH FOR GENERATING URBAN FOOTPRINT MAPS: FROM ROAD NETWORK TO URBAN FOOTPRINT 基于规则的城市足迹地图生成方法&从路网到城市足迹

IF 1.9

International Journal of Engineering and Geosciences Pub Date : 2020-06-01 DOI: 10.26833/ijeg.623592

M. Hacar

引用次数: 3

COMPARATIVE ANALYSIS OF THE PYSEBAL MODEL AND LYSIMETER FOR ESTIMATING ACTUAL EVAPOTRANSPIRATION OF SOYBEAN CROP IN ADANA, TURKEY 土耳其阿达纳大豆作物实际蒸散量估算的PYSEBAL模型与蒸渗仪的比较分析

IF 1.9

International Journal of Engineering and Geosciences Pub Date : 2020-06-01 DOI: 10.26833/ijeg.573503

Alidou Sawadogo, Hessels Tim, K. Gündogdu, A. Demir, M. Ünlü, S. Zwart

{"title":"COMPARATIVE ANALYSIS OF THE PYSEBAL MODEL AND LYSIMETER FOR ESTIMATING ACTUAL EVAPOTRANSPIRATION OF SOYBEAN CROP IN ADANA, TURKEY","authors":"Alidou Sawadogo, Hessels Tim, K. Gündogdu, A. Demir, M. Ünlü, S. Zwart","doi":"10.26833/ijeg.573503","DOIUrl":"https://doi.org/10.26833/ijeg.573503","url":null,"abstract":"Accurate estimation of evapotranspiration (ET) is an important factor in water management, especially in irrigated agriculture. Accurate irrigation scheduling requires accurate estimation of ET. The objective of this study was to estimate the actual evapotranspiration (ET a ) by the pySEBAL model and to compare it with the actual evapotranspiration measured by the lysimeter method of soybean crop in Adana, Turkey. Five Landsat 5 Thematic Mapper (TM) images and weather data were used for this study to estimate actual evapotranspiration by the pySEBAL model. The results showed a good relationship between ET a estimated by the pySEBAL model and ET a measured by the lysimeter method, with an R 2 of 0.73, an RMSE of 0.51 mm.day −1 , an MBE of 0.04 mm.day −1 and a Willmott’s index of agreement (d) of 0.90. Based on this study, there is a good relationship between the actual evapotranspiration estimated by the pySEBAL model and the actual evapotranspiration measured by the lysimeter method. Consequently, ET a of soybean crop can be estimated with high accuracy by the pySEBAL model in Adana, Turkey.","PeriodicalId":42633,"journal":{"name":"International Journal of Engineering and Geosciences","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43179459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

A NOVEL APPROACH FOR IONOSPHERIC TOTAL ELECTRON CONTENT EARTHQUAKE PRECURSOR AND EPICENTER DETECTION FOR LOW-LATITUDE 低纬度地区电离层总电子含量地震前兆和震中探测的新方法

IF 1.9

International Journal of Engineering and Geosciences Pub Date : 2020-06-01 DOI: 10.26833/ijeg.614856

S. Kalita, B. Chetia

引用次数: 1

PERFORMANCE ANALYSIS OF AMBIGUITY RESOLUTION ON PPP AND RELATIVE POSITIONING TECHNIQUES: CONSIDERATION OF SATELLITE GEOMETRY PPP和相对定位技术解模糊性能分析&考虑卫星几何形状

IF 1.9

International Journal of Engineering and Geosciences Pub Date : 2020-06-01 DOI: 10.26833/ijeg.580027

Sermet Ogutcu

{"title":"PERFORMANCE ANALYSIS OF AMBIGUITY RESOLUTION ON PPP AND RELATIVE POSITIONING TECHNIQUES: CONSIDERATION OF SATELLITE GEOMETRY","authors":"Sermet Ogutcu","doi":"10.26833/ijeg.580027","DOIUrl":"https://doi.org/10.26833/ijeg.580027","url":null,"abstract":"Ambiguity resolution plays an important role in surveying using Precise Point Positioning (PPP) and relative positioning techniques that require high accuracy. In this study, ambiguity resolution performance of PPP and relative positioning under the unobstructed (with 7° cut-off angle) and constrained environment (with 25° cut-off angle, such as nearby buildings and street-canyons) using final/ultra-rapid orbit and clock products are investigated for different observation time. Seventeen globally distributed stations and six baselines of lengths from 270 km to 2100 km are chosen for conducting PPP and relative positioning, respectively. A 31-day period in January 2018 is chosen for processing using 24-, 12-, 6-, 4-, 2- and 1-h observations. The results indicate that sub-mm to cm levels of improvement in horizontal and vertical coordinate components are generally observed with ambiguity resolution for PPP and relative positioning techniques compared to the float counterparts. Moreover, accuracy degradation of ambiguity resolution compared to float solution is observed generally in the vertical component using the 25° elevation cut-off angle for both techniques. As the observation time increases, the accuracy improvements from ambiguity resolution decrease for each technique. In addition, fixing to the wrong integer ambiguities are generally seen with a short observation time and a 25° elevation cut-off angle for both techniques due to the poor satellite geometry. As far as baseline length in relative technique is concerned, the testing results show that there is no direct relation between baseline length and the accuracy improvement from ambiguity resolution compared to the float solution. The results also reveal that the coordinates obtained from ambiguity resolution does not significantly change in the relative technique using final or ultra-rapid orbit/clock products, whereas the changes in PPP are significant for most of the stations.","PeriodicalId":42633,"journal":{"name":"International Journal of Engineering and Geosciences","volume":"1 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41477041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

COMPLEXITY MEASURES OF SPORT AMENITIES ALLOCATION IN URBAN AREA BY METRIC ENTROPY AND PUBLIC DEMAND COMPATIBILITY 基于度量熵和公共需求兼容性的城市体育设施配置复杂性测度

IF 1.9

International Journal of Engineering and Geosciences Pub Date : 2019-10-01 DOI: 10.26833/IJEG.540180

S. Bilgi, A. G. Gulnerman, Birgül Arslanoğlu, H. Karaman, Ozge Ozturk

{"title":"COMPLEXITY MEASURES OF SPORT AMENITIES ALLOCATION IN URBAN AREA BY METRIC ENTROPY AND PUBLIC DEMAND COMPATIBILITY","authors":"S. Bilgi, A. G. Gulnerman, Birgül Arslanoğlu, H. Karaman, Ozge Ozturk","doi":"10.26833/IJEG.540180","DOIUrl":"https://doi.org/10.26833/IJEG.540180","url":null,"abstract":"Sports has an important role for the health of present societies and the next generations as an element of urban design. Sports facilities have strong effects on the social life in urban areas. The facilities supply the communication between the dynamics of the cities and generate synergy in the city life of people interacting with each other for improvement in their lives. Before the construction of the sports facilities, the planners must evaluate the type and size of them in terms of the population of the whole city and, the population of neighboring settlement areas, which use the facility. Entropy can be used as a criterion for the quantitative measure of spatial information on maps. In the study, the location of the sports facilities in Istanbul are compared by using the entropy as a quantitative criterion. As a result, the success of the location selection for the sports facilities in urban areas are estimated by using the entropy as a component. Metric entropy method and applications were carried out by a case study in the city of Istanbul for defining the spatial distribution of sports facility locations with the posts of people including \"sports\" and sports-related keywords on social media.","PeriodicalId":42633,"journal":{"name":"International Journal of Engineering and Geosciences","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42479923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

PERFORMANCE OF NETWORK RTK CORRECTION TECHNIQUES (FKP, MAC and VRS) UNDER LIMITED SKY VIEW CONDITION 有限天空条件下网络RTK校正技术（FKP、MAC和VRS）的性能

IF 1.9

International Journal of Engineering and Geosciences Pub Date : 2019-10-01 DOI: 10.26833/IJEG.492496

H. Pehlivan, Mert Bezcioglu, Muhammet Yılmaz

引用次数: 5