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A scalable cyberinfrastructure and cloud computing platform for forest aboveground biomass estimation based on the Google Earth Engine

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International Journal of Digital Earth 2019年第9期12卷 995-1012页

作者： Zelong Yang Wenwen Li Qi chen Sheng Wu Shanjun Liu jianya gong The State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan UniversityWuhanPeople’s Republic of China School of Geographical Sciences and Urban Planning Arizona State UniversityTempeAZUSA Department of Geography and Environment University of Hawaii at MānoaHonoluluHIUSA School of Computer and Information Science Southwest UniversityChongqingPeople’s Republic of China School of Resources and Civil Engineering Northeastern UniversityShenyang

Earth observation(EO)data,such as high-resolution satellite imagery or LiDAR,has become one primary source for forests Aboveground Biomass(AGB)mapping and ***,managing and analyzing the large amount of globally or locally available EO data remains a great *** Google Earth Engine(GEE),which leverages cloud-computing services to provide powerful capabilities on the management and rapid analysis of various types of EO data,has appeared as an inestimable tool to address this *** this paper,we present a scalable cyberinfrastructure for on-the-fly AGB estimation,statistics,and visualization over a large spatial *** cyberinfrastructure integrates state-of-the-art cloud computing applications,including GEE,Fusion Tables,and the Google Cloud Platform(GCP),to establish a scalable,highly extendable,and highperformance analysis *** experiments were designed to demonstrate its superiority in performance over the traditional desktop environment and its scalability in processing complex *** addition,a web portal was developed to integrate the cyberinfrastructure with some visualization tools(*** Maps,Highcharts)to provide a Graphical User Interfaces(GUI)and online visualization for both general public and geospatial researchers.

关键词： Above ground biomass cloud computing Google Earth Engine visualization

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DESIGN AND IMPLEMENTATION OF AN INTERNET GIS

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Geo-Spatial Information Science 2001年第2期4卷 1-7页

作者： gong jianya LIESMARS Wuhan University

The development of Internet provides convenient environment for information searching and *** also offers a new platform for geographic information processing and *** paper discusses organization and processing approach to Internet geographic information,and provides a new method to cross_platform and distributed geographic information and its software *** example is used to show the practicality and superiority of this method.

关键词： GIS distributed Internet

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Adaptive polarimetric decomposition using incoherent ground scattering models without reflection symmetry assumption

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Geo-Spatial Information Science 2015年第1期18卷 1-10页

作者： Xiaoguang chenG Wenli HUANG jianya gong Nanjing Research Institute of Electronics Engineering 99 Houbiaoying RoadNanjing 210007China State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan University129 Luoyu RoadWuhan 430079China Department of Geographical Sciences University of MarylandCollege ParkMD 20742USA

Most of the current incoherent polarimetric decompositions employ coherent models to describe ground scattering;however,this cannot truly reflect the fact especially in natural ground *** paper proposes a highly adaptive decomposition with incoherent ground scattering models(ADIGSM).In ADIGSM,Neumann’s adaptive model is employed to describe volume scattering,and to explain cross-polarized power in remainder matrix,so that we can obtain orientation angle randomness for both volume scattering and the dominant ground *** computation of volume scattering parameters is strictly constrained for non-negative eigenvalues,while the volume scattering parameters that explain the most cross-polarized power are *** applying ADIGSM to NASA’s UAVSAR data,the negative component powers were obtained in quite a few forest *** with several newest decompositions,the volume scattering power is obviously lowered,especially in areas dominated by surface scattering or double bounce *** orientation angle randomness of each component is reasonable as *** has potential to be applied in the fields such as PolSAR image classification,land cover mapping,speckle filtering,soil moisture and roughness estimation,etc.

关键词： polarimetric synthetic aperture radar(PolSAR) polarimetric decomposition non-negative eigenvalue decomposition(NNED) scattering model

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Virtual globe-based integration and sharing service method of GeoSpatial Information

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Science China Earth Sciences 2013年第11期56卷 1780-1790页

作者： chen Jing XIANG LongGang gong jianya State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan University

How to integrate and disseminate globally distributed multi-source and heterogeneous spatial information is an open problem in integration and sharing service of geographic information. Here we propose a new service architecture suitable for integra- tion and sharing of distributed multi-source geographic information. We also propose a global virtual pyramid model, which can be applied in 3D virtual globes. In view of the difficulty of web multi-node geographic information sharing service, we propose a web multi-node service aggregation method, integrated in our autonomously developed virtual globe platform Geo- Globe and introduced in the National Platform for Common GeoSpatial Information Services named ＂T1ANDITU＂. It achieves 2D and 3D integration for geographic information service.

关键词： virtual globe service aggregation National Platform for Common GeoSpatial Information Services

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Terrain radiometric calibration of airborne UAVSAR for forested area

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Geo-Spatial Information Science 2012年第4期15卷 229-240页

作者： chenG Xiaoguang Naiara PINTO gong jianya State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan University129 Luoyu RoadWuhan 430079China Department of Geographical Sciences University of MarylandCollege ParkMD 20770USA NASA/Caltech Jet Propulsion Laboratory PasadenaCAUSA

In the field of biomass estimation,terrain radiometric calibration of airborne polarimetric SAR data for forested areas is an urgent *** area correction ofσ-naught could not completely remove terrain *** by Small and Shimada,this paper tested gamma-naught on one mountainous forested area using airborne Uninhabited Aerial Vehicle Synthetic Aperture Radar data and found it could remove most terrain ***,a systematic increasing trend from far range to near range is found in airborne SAR *** paper made an attempt to use the relationship between distance to SAR sensor andγ-naught to calibrateγ-*** quantitative evaluation methods are *** results demonstrate that variation ofγ-naught can be constrained to a limited extent from near range to far *** this method is based on ground range images,it avoids complicated orthorectification.

关键词： terrain radiometric calibration UAVSAR sigma-naught γ-naught

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Geoinformatics education in China

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Geo-Spatial Information Science 2014年第4期17卷 208-218页

作者： Deren LI jianya gong Peng YUE State Key Laboratory of Information Engineering in Surveying Mapping and Remote Sensing(LIESMARS)Wuhan UniversityWuhan 430079China

The paper gives an overview of the current status of education in geoinformatics in ***,the paper provides a brief introduction to the history of geoinformatics education in China and a general review of the scientific and technological *** then presents how the development affects the education and training in *** the paper,universities and institutes in China that can award academic degrees related to geoinformatics are summarized,and undergraduate majors are briefly ***,the paper reports the work having been done by the national expert group on Surveying and Mapping,including the revision of discipline catalog and guide for graduate education and requirements.A list of typical curricula in geoinformatics education is *** on promoting the graduate student exchange platform are ***,a case study of geoinformatics education in Wuhan University is discussed.

关键词： geoinformatics Surveying and Mapping remote sensing science and technology geographical information science(GIS) education and training China

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A robust and rapid algorithm for generating and transmitting multi-resolution three-dimensional models

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Chinese Science Bulletin 2006年第8期51卷 987-993页

作者： YANG Bisheng LI Qingquan gong jianya State Key Laboratory of Information Engineering in Surveying Mappingand Remote Sensing Wuhan University Wuhan 430079 China

Recent advances in 3D spatial data capture, such as high resolution satellite images and laser scanning as well as corresponding data proc- essing and modeling technologies, have led to the generation of large amounts of datasets on terrains, buildings, roads and other features. The rapid trans- mission and visualization of 3D models has become a ‘bottleneck’ of internet-based applications. This paper proposes a robust algorithm to generate multi-resolution models for rapid visualization and network transmission of 3D models. Experiments were undertaken to evaluate the performance of the proposed algorithm. Experimental results demon- strate that the proposed algorithm achieves good performance in terms of running speed, accuracy, encoding of multi-resolution models, and network transmission.

关键词：网络传输三维模型遗传算法可视化

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Geoprocessing in Cloud Computing platforms-a comparative analysis

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International Journal of Digital Earth 2013年第4期6卷 404-425页

作者： Peng Yue Hongxiu Zhou jianya gong Lei Hu State Key Laboratory of Information Engineering in Surveying Mapping and Remote Sensing(LIESMARS)Wuhan UniversityWuhanChina

The emergence of Cloud Computing technologies brings a new information infrastructure to *** geoprocessing functions in Cloud Computing platforms can bring scalable,on-demand,and costeffective geoprocessing services to geospatial *** paper provides a comparative analysis of geoprocessing in Cloud Computing platformsMicrosoft Windows Azure and Google App *** analysis compares differences in the data storage,architecture model,and development environment based on the experience to develop geoprocessing services in the two Cloud Computing platforms;emphasizes the importance of virtualization;recommends applications of hybrid geoprocessing Clouds,and suggests an interoperable solution on geoprocessing Cloud *** comparison allows one to selectively utilize Cloud Computing platforms or hybrid Cloud pattern,once it is understood that the current development of geoprocessing Cloud services is restricted to specific Cloud Computing platforms with certain kinds of *** performance evaluation is also performed over geoprocessing services deployed in public Cloud *** tested services are developed using geoprocessing algorithms from different vendors,GeoSurf and Java Topology *** evaluation results provide a valuable reference on providing elastic and cost-effective geoprocessing Cloud services.

关键词： geoprocessing Cloud computing geospatial service GIS Microsoft Azure Google App Engine

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ABOUT THE INTERNATIONAL GIS WORKSHOP ON ANTARCTIC KING GEORGE ISLAND

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Geo-Spatial Information Science 2001年第2期4卷 75-76页

作者： gong jianya Workshop Organization Committee LIESMARS Wuhan University

Click to increase image sizeClick to decrease image size

关键词： GIS ABOUT THE INTERNATIONAL GIS WORKSHOP ON ANTARCTIC KING GEORGE ISLAND

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Indoor scene texturing based on single mobile phone images and 3D model fusion

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International Journal of Digital Earth 2019年第5期12卷 525-543页

作者： Hanjiang Xiong Wei Ma Xianwei Zheng jianya gong Douadi Abdelalim State Key Laboratory of Information Engineering in Surveying Mapping and Remote Sensing(LIESMARS)Wuhan UniversityWuhanHubei ProvincePeople’s Republic of China Collaborative Innovation Center of Geospatial Technology Wuhan UniversityWuhanPeople’s Republic of China

Realistic texture mapping and coherent up-to-date rendering is one of the most important issues in indoor 3-D ***,existing texturing approaches are usually performed manually during the modelling process,and cannot accommodate changes in indoor environments occurring after the model was created,resulting in outdated and misleading texture *** this study,a structured learning-based texture mapping method is proposed for automatic mapping a single still photo from a mobile phone onto an alreadyconstructed indoor 3-D *** up-to-date texture is captured using a smart phone,and the indoor structural layout is extracted by incorporating per-pixel segmentation in the FCN algorithm and the line constraints into a structured learning *** enables real-time texture mapping according to parts of the model,based on the structural ***,the rough camera pose is estimated by pedestrian dead reckoning(PDR)and map information to determine where to map the *** experimental results presented in this paper demonstrate that our approach can achieve accurate fusion of 3-D triangular meshes with 2-D single images,achieving low-cost and automatic indoor texture *** on this fusion approach,users can have a better experience in virtual indoor3-D applications.

关键词： Mobile phone image FCN texture updating indoor 3-D model augmented reality

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