International Symposium on Digital Earth最新文献

Situation-aware GeoVisualization considering applied logic and extensibility: a new architecture and mechanism for intelligent GeoWeb 考虑应用逻辑和可扩展性的态势感知地理可视化:智能GeoWeb的新体系结构和机制

International Symposium on Digital Earth Pub Date : 2009-09-26 DOI: 10.1117/12.873492

Xuelin He, C. Gold

{"title":"Situation-aware GeoVisualization considering applied logic and extensibility: a new architecture and mechanism for intelligent GeoWeb","authors":"Xuelin He, C. Gold","doi":"10.1117/12.873492","DOIUrl":"https://doi.org/10.1117/12.873492","url":null,"abstract":"Recent years have witnessed the emerging Virtual Globe technology which has been increasingly exhibiting powerful features and capabilities. However, the current technical architecture for geovisualization is still the traditional data- viewer mode, i.e. KML-Geobrowser. Current KML is basically an encoding format for wrapping static snapshots of information frozen at discrete time points, and a geobrowser is virtually a data renderer for geovisualization. In the real world spatial-temporal objects and elements possess specific semantics, applied logic and operational rules, naturally or socially, which need to be considered and to be executed when corresponding data is integrated or visualized in a visual geocontext. However, currently there is no a way to express and execute this kind of applied logic and control rules within the current geobrowsing architecture. This paper proposes a novel architecture by originating a new mechanism, DKML, and implementing a DKML-supporting prototype geobrowser. Embedded programming script within KML files can express applied logic, control conditions, situation-aware analysis utilities and special functionality, to achieve intelligent, controllable and applied logic-conformant geovisualization, and to flexibly extend and customize the DKMLsupporting geobrowser. Benefiting from the mechanism developed in this research, geobrowsers can truly evolve into powerful multi-purpose GeoWeb platforms with promising potential and prospects.","PeriodicalId":417031,"journal":{"name":"International Symposium on Digital Earth","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127081344","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: 0

Monitoring vegetation cover change using time series of remote sensing data in Huang-Huai-Hai Plain, China 黄淮海平原植被覆盖变化的时间序列遥感监测

International Symposium on Digital Earth Pub Date : 2009-09-26 DOI: 10.1117/12.873254

Linlin Lu, Huadong Guo, W. Fu

引用次数: 1

Forest fire autonomous decision system based on fuzzy logic 基于模糊逻辑的森林火灾自主决策系统

International Symposium on Digital Earth Pub Date : 2009-09-26 DOI: 10.1117/12.872682

Z. Lei, J. Lu

引用次数: 1

A method of terrain correction coupling with atmospheric correction 一种地形校正与大气校正耦合的方法

International Symposium on Digital Earth Pub Date : 2009-09-26 DOI: 10.1117/12.873156

Bingfeng Yang, Qiao Wang, G. Lv, Yipeng Yang, Changzuo Wang, Li Zhu, Huawei Wan, Xiaomang Liu, Jing Li

引用次数: 0

Monitoring the deformation of a landslide with differential SAR interferometry using corner reflectors 利用角反射镜差分SAR干涉测量监测滑坡变形

International Symposium on Digital Earth Pub Date : 2009-09-26 DOI: 10.1117/12.873272

Jinghui Fan, Pengfei Tu, Xiaofang Guo, Yi Wang, D. Ge, Guang Liu

引用次数: 4

Research of a synchronized cooperative GIS system based on message 基于消息的同步协同GIS系统研究

International Symposium on Digital Earth Pub Date : 2009-09-26 DOI: 10.1117/12.872683

Yaqin Sun, Peijun Du, Liangchen Zhou

引用次数: 3

Spatial distribution characteristics of surface sediment grain-size parameters in intertidal flat using hyperspectral remote sensing data 基于高光谱遥感数据的潮间带表层沉积物粒度参数空间分布特征

International Symposium on Digital Earth Pub Date : 2009-09-26 DOI: 10.1117/12.873207

Xiaodan Zheng, Ying Zhang, Dong Zhang, Huan Li

{"title":"Spatial distribution characteristics of surface sediment grain-size parameters in intertidal flat using hyperspectral remote sensing data","authors":"Xiaodan Zheng, Ying Zhang, Dong Zhang, Huan Li","doi":"10.1117/12.873207","DOIUrl":"https://doi.org/10.1117/12.873207","url":null,"abstract":"Among totally 242 spectral bands ranging from 400 to 2500 nm of Hyperion hyperspectral remote sensing data, it was found that two bands with reflectance of 1215 and 2133 nm had relatively good correlation with sediment grain-size parameters of mean diameter(Mz), skewness(Sk), medium diameter(Md) and sorting coefficient(So). And further more, the combination of band reflectance had a significant linear correlation with Mz, So, Sk and Md. Then linear regression models were established and applied to get spatial distribution characteristics of grain-size parameters at intertidal flat near the Sheyang River Estuary in Jiangsu Province. Verification by independent samples showed that the mean relative precision and the mean absolute precision exceeded 75.70% and 72.17%, respectively. Spatial distribution pattern of grain-size parameters indicated that in the direction from north to south that parallel to the coastal line, grain diameters became finer, sorting characteristics became worse and skewness moved from near symmetry to positive deviation. While at the direction from the land phase to the sea that perpendicular to coastal line, grain diameters changed coarser, sorting characteristics became better and skewness moved from positive to near symmetry. These variation trends were in accordance with hydrodynamic environments and sediments sources well.","PeriodicalId":417031,"journal":{"name":"International Symposium on Digital Earth","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121149400","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: 0

Research into the method for construction of interactive virtual reality scenes based on Ajax technology: a case study 基于Ajax技术的交互式虚拟现实场景构建方法研究——以实例为例

International Symposium on Digital Earth Pub Date : 2009-09-26 DOI: 10.1117/12.872843

Jing Deng, Xin-qi Zheng

{"title":"Research into the method for construction of interactive virtual reality scenes based on Ajax technology: a case study","authors":"Jing Deng, Xin-qi Zheng","doi":"10.1117/12.872843","DOIUrl":"https://doi.org/10.1117/12.872843","url":null,"abstract":"Nowadays, the development of Digital Earth has made a tremendous impact on all aspects of human social life, and a series of effective work around Digital Earth, which attracted wide attention, have been carried out by people with different background. Meantime, exploitation of the popularized technology is constantly being mature with the development of Google Earth. However, users still have many difficulties in constructing and operating 3D scenes on web, because of the limitation of network speed. This paper aims to provide a more convenient method for the client users to interact with the 3D models, thus to promote popularization of Digital Earth technology and apply it in many aspects of social life. In this research, Ajax was utilized as a newly emerged network technology, since it could provide a good solution for application in developing of virtual reality technology based on Web. This paper analyzed the principles and key technologies of Ajax, explored how Ajax can be used in construction of interactive virtual reality scenes through case study, in order to enhance access speed of virtual scenes on Web page, and increase the authenticity, interactivity and extensibility of virtual scenes. This paper introduced the whole process of virtual model construction and proposed an efficient way to achieve interactive scene. The results showed that the combination of SAI (Scene Access Interface) method and Ajax technology could effectively save network bandwidth and enhance user experience, which laid the foundation for the development of virtual reality technology based on Web and the popularization of Digital Earth technology.","PeriodicalId":417031,"journal":{"name":"International Symposium on Digital Earth","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124496512","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: 0

An experimental study on the feasibility of monitoring petroleum-polluted waters with remote sensing technology 利用遥感技术监测石油污染水体可行性的实验研究

International Symposium on Digital Earth Pub Date : 2009-09-26 DOI: 10.1117/12.873279

Miao-fen Huang, Q. Song, Xu-feng Xing, Jun-wu Tang, Wuyi Yu, Yimin Zhang

{"title":"An experimental study on the feasibility of monitoring petroleum-polluted waters with remote sensing technology","authors":"Miao-fen Huang, Q. Song, Xu-feng Xing, Jun-wu Tang, Wuyi Yu, Yimin Zhang","doi":"10.1117/12.873279","DOIUrl":"https://doi.org/10.1117/12.873279","url":null,"abstract":"An experimental study was carried out in order to prove the feasibility of monitoring petroluem-polluted waters with remote sensing technology. The field data was collected in the rivers threatened by petroleum pollution. The measured items mainly included (1) the absorption coefficients of yellow substance, de-pigmented particles and phytoplankton pigments; (2) the backscattering coefficients data of water; (3) water quality parameters; (4) in-situ fine water spectral data. First, absorption spectral features and backscattering coefficients of petroleum-polluted water were analyzed. Secondly, the field spectral data were processed as corresponding bands of ENVISAT/MERIS using the spectral respond function of ENVISAT/MERIS in order to probe into the contribution of the various constituent concentrations in waters on the leaving-water radiation and remote sensing reflectance. The results showed that (1) with the increase of the petroleum pollution concentration, the absorption coefficients of petroleum-polluted water are also increased; (2) the spectra slope of exponential function of petroleum-polluted water is larger than that of petroleum-unpolluted water; (3) Emulsificated oil and decomposed oil in water can be absorbed by suspended particles and influence the scattering properties of the particles. Moreover it will change the spectral model of the inorganic particles backscattering coefficient with petroleum-polluted water; (4) the correlation between petroleum pollution concentration and remote sensing reflectance based on ENVISAT/MERIS is negative. These features of inherent optical parameters and apparent optical parameters obtained from the experiment provide the feasibility for monitoring petroleum-polluted waters with remote sensing technology.","PeriodicalId":417031,"journal":{"name":"International Symposium on Digital Earth","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125974414","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: 1

A study on the urban spatial expansion in Fuzhou, Fujian Province of China, using the SLEUTH model 基于SLEUTH模型的福建省福州市城市空间扩展研究

International Symposium on Digital Earth Pub Date : 2009-09-26 DOI: 10.1117/12.873343

Pingli Wu, Senlin Li, Xuewen Wu

引用次数: 0