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Volume XXXVIII-4/W10, 2009

WG IV/4, VII/5
ISPRS Wuhan 2009 Workshop
Virtual Changing Globe for Visualisation and Analysis
October 27-18, 2009, Wuhan, China
Editor(s): Jianya Gong,Qiming Zhou


Keynote Abstracts

TOWARDS A GEOSPATIAL SERVICE WEB
Deren Li
Abstract: With the advancement of Earth Observation (EO) and information technologies, the capabilities for collecting, transferring, processing, and sharing geospatial data have dramatically increased in recent years. For example, the wide deployment of distributed sensors can provide real-time or near real-time data. How to extract information and discover knowledge from oceans of data, therefore, is one of greatest challenges today. The distinguished features of the Web such as distribution and openness, and the evolving Web-related technologies such as Web Service, Web 2.0, Semantic Web, Sensor Web, Grid and Cloud Computing, make the Web a promising platform for providing services on geospatial data discovery, information extraction, and knowledge discovery. This talk provides envision of Geospatial Service Web (GSW), a geospatial infrastructure that makes all types of distributed geospatial resources Web discoverable, accessible, and "plug-and-play". It provides a framework towards an integrated seamless distributed Space-Earth system, which covers the lifecycle of geospatial applications, from the collection of geospatial data to the end user-oriented applications, thus significantly enhancing the efficient and effective sharing of geospatial data, information, and knowledge. The presentation will outline the mission of GSW, discuss the framework of GSW, and list the service components in GSW. The standards to support interoperability in GSW will be described. And finally, the system architecture and recent development on the prototype system (i.e. GeoGlobe) for the implementation of GSW will be presented.

CHALLENGES IN ACHIEVING OPERATIONAL LAND COVER AND LAND USE MONITORING
John Townshend
Abstract: There is widespread recognition of the importance of land cover and land use information Although there is widespread agreement that the products must be generated on a regular basis operationally in reality we still have not established this capability. The presentation will explore reasons for this situation and ways in which obstacles may be overcome. The latter include the absence of sufficient data, the weakness of data delivery systems, problems in generating sufficient training and validation data and inadequate algorithms for information extraction. The presentation will be illustrated by results from research directed towards the monitoring of forest cover globally at Landsat resolutions. The use of Virtual Globes as an organizing framework for operational monitoring will be discussed.

GLOBAL ACCESS OF LOCAL KNOWLEDGE
Vincent Tao
Abstract: Among many drivers that made a profound impact to the emergency of the Web as a computing and social platform, geospatial technology is probably the least expected. From online mapping to virtual worlds, from location based services to location commerce (L-commerce), from local search to local targeted advertising, location became indispensable part of the Web evolution.

SPATIAL INFORMATION PROCESSING: STANDARDS-BASED OPEN SOURCE VISUALIZATION TECHNOLOGY - WORLD WIND VISUALIZATION TECHNOLOGY
Patrick Hogan
Abstract: Information security is a global issue that will increasingly affect our ability to survive as a species. Collectively we must better appreciate the complex relationships that make life on Earth possible. Providing spatial information in its native context can accelerate our ability to process that information. To maximize this ability to process information, three basic elements are required: data delivery (server technology), data access (client technology), and data processing (information intelligence). NASA World Wind provides open source server and client technologies based on open standards. The possibilities for data processing and data sharing are enhanced by this open infrastructure for geographic information. It is interesting that this open source and open standards approach, unfettered by proprietary constraints, simultaneously provides for entirely proprietary use of this same technology.
Page(s) 3
Conference Paper (PDF, 997 KB)


Session 1: Virtual Globe,Visualization and Analysis

POINT CLOUD PROCESSING FOR 3D CITY MODEL PRODUCTION
George Vosselman
Abstract: The high pulse frequencies of today's airborne, mobile and terrestrial laser scanners enable the acquisition of point clouds with densities from some 20-50 points/m2 for airborne scanners to several thousands points/m2 for mobile and terrestrial scanners. Dense image matching can nowadays also result into high point density point clouds. For the (semi-) automated extraction of geo-information from point clouds these high point densities are very beneficial. The large number of points on the surfaces of objects to be extracted describe the surface geometry with a high redundancy. This allows the reliable detection of such surfaces in a point cloud. After a comparison of point clouds obtained from imagery and from laser scanners, various examples are presented on how point cloud segmentations can be used to obtain 3D building models at various levels of detail. The usage of generic knowledge on the objects to be mapped is shown to play a key role in the automation of the point cloud interpretation.

CONTEXT-AWARE ANALYSIS,GEOVISUALISATION AND VIRTUAL GLOBES FOR MANAGING EARTH RESOURCES
M.Madden,H.Zhao,T.R.Jordan,M. Blankenship,J.Masour,H.Yang, J.L.Corn
Page(s) 8
Conference Paper (PDF, 2495 KB)

INTEGRATING VIRTUAL GLOBE AND WEB SERVICE TECHNOLOGIES FOR ISPRS HIGHER - EDUCATION TEACHING AND RESEARCH
Jianya Gong , Peng Yue, Longgang Xiang , Jing Chen
Page(s) 5
Conference Paper (PDF, 455 KB)

REAL-TIME CONTOUR MAP RECONSTRUCTION WITH 3D TERRAIN ON MODERN GRAPHICS HARDWARE
Chen Zhuo, Zhao Yanqing, Yang Chongjun
Page(s) 6
Conference Paper (PDF, 1029 KB)

VISUALIZE ORACLE GEORASTER OBJECTS IN GEOGLOBE SYSTEM UNDER INTERNET ENVIRONMENT
Longgang Xiang , Qingyun Xie, Charles Wang
Page(s) 5
Conference Paper (PDF, 1556 KB)


Session 2: Virtual Globe Case Studies

NOVEL EMERGENCY/PUBLIC HEALTH SITUATION ROOMS AND MORE USING 4-D GIS
Maged N. Kamel Boulos
Page(s) 2
Conference Paper (PDF, 239 KB)

ORGANIZETION MULTI-SCALE 3D MODEL DATA TO MEET NETWORK TRANSMISSION
Chen Jing,Gong JianYa,Xie BingXiong
Page(s) 6
Conference Paper (PDF, 265 KB)

SUPERMAP GIS 6R: A REAL SPACE GIS
F.X. Luo, G.F. Song, E.Q. Wang, L.Q. Ma
Page(s) 4
Conference Paper (PDF, 331 KB)

THE VISUALIZATION SIMULATION OF REMOTE-SENSING SATELLITE SYSTEM
Deng Fei, Chu YanLai, Zhang Peng, Feng Chen, Liang JingYong
Page(s) 6
Conference Paper (PDF, 304 KB)


Session 3: Spatio-Temporal Process Modelling

A METHOD OF BUILDING MODELING FROM TRUE ORTHO-IMAGE AND DSM
Jiang Heng-biao, Guang Hong-liang, Liu Xian-lin
Page(s) 4
Conference Paper (PDF, 345 KB)

THE TAXIS' EXPERIENCE KNOWLEDGE MODELING AND ROUTE PLANNING
Tang Luliang,Li Qingquan,Chang Xiaomeng
Page(s) 7
Conference Paper (PDF, 327 KB)

VISUALIZATION OF EARTH SCIENCE DATA USING GOOGLE EARTH TM
A.Chen,G.G.Leptoukh,S.J.Kempler,L.Di
Page(s) 6
Conference Paper (PDF, 339 KB)

GRADIENT ANALYSIS OF LANDSCAPE PATTERN SPATIAL-TEMPORAL CHANGES IN BEIJING METROPOLITAN AREA, CHINA
Yetao Yang,Oiming Zhou,Jianya Gong
Page(s) 5
Conference Paper (PDF, 117 KB)

SEMI-SUPERVISED CLASSIFICATION BASED ON GAUSS MIXTURE MODEL FOR REMOTE IMAGERY
Xiong Biao, Zhang Xiaojun, Jiang Wanshou
Page(s) 5
Conference Paper (PDF, 912 KB)

AUTOMATED FOREST COVER CHANGE ANALYSIS USING LANDSAT OBSERVATIONS
Chengquan Huang
Abstract: The series of Landsat instruments have produced a unique imagery record suitable for deriving forest change products at different spatial and temporal scales. Such products are needed in order to advance studies on many pressing environmental issues, including carbon accounting, ecosystem dynamics, sustainability, and the vulnerability of natural and human systems. Large quantities of Landsat images are often needed in order to develop forest change products with spatial and temporal characteristics suitable for many of these studies. The purpose of this talk is to present two automated approaches for deriving forest change products using Landsat images. The first approach is designed to reconstruct forest change history using Landsat time series stacks (LTSS) and a vegetation change tracker (VCT) algorithm. A LTSS typically consists of a sequence of images of the same location that have a nominal temporal interval (e.g., 1 image every two years). This approach will not only allow detection of forest changes, but also date the detected changes using the acquisition date of the LTSS images. The second approach is designed for forest change analysis in cases where available images are not adequate for assembling LTSS but are adequate for 2-date change analysis. This approach consists of a training data automation (TDA) method for delineating necessary training samples and uses an advanced support vector machines (SVM) algorithm to map changes. Both approaches have been tested extensively, and are being used to generate forest disturbance products through several NASA funded projects.

MULTITEMPORAL SPACEBORN SAR DATA FOR CHANGE DETECTION IN URBAN AREAS:A CASE STUDY IN SHANGHAI
Osama Adam, Yifang Ban
Page(s) 8
Conference Paper (PDF, 766 KB)

A NEW RELATIVE RADIOMETRIC CONSISTENCY PROCESSING METHOD FOR CHANGE DETECTION BASED ON WAVELET TRANSFORM AND LOW-PASS FILTER
Kaiming SUN, Haigang SUI, Deren LI,Chuan XU
Page(s) 8
Conference Paper (PDF, 1576 KB)


Session 4: Methods of Change Detection

MODELING AND VISUALIZING SPATIO-TEMPORAL PATTERN OF LAND COVER CHANGE IN PEARL RIVER DELTA REGION OF CHINA USING MULTI-TEMPORAL IMAGERY
Qiming Zhou, Bo Sun
Page(s) 5
Conference Paper (PDF, 813 KB)

COMPARATIVE EVALUTION OF THE INFLUENCE OF THE TERRAIN TOPOGRAPHY ON THE REGISTRATION ACCURACY OF THE FUSED MULTI-SENSOR SATELLITE IMAGES(CASE STUDY:P5 AND P6 IRS SATELLITE IMAGES)
M.Fallah Yakhdani , A.Azizi
Page(s) 3
Conference Paper (PDF, 104 KB)

A NEW APPROACH TOWARD OBJECT-BASED CHANGE DETECTION
Guo Zhang, Yang Li
Page(s) 4
Conference Paper (PDF, 1492 KB)

LAND-USE SPATIAL OPTIMIZATION MODEL BASED ON PARTICLE SWARM OPTIMIZATION
Shifa MA, Jianhua He, Feng Liu
Page(s) 6
Conference Paper (PDF, 289 KB)

THE DECISION TREE ALGORITHM OF URBAN EXTRACTION FROM MULTI-SOURCE IMAGE DATA
Yu Qiao, Hui Ping Liu, Mu Bai, XiaoDong Wang, XiaoLuo Zhou
Page(s) 5
Conference Paper (PDF, 202 KB)

A NEW URBAN ROAD DETECTION METHOD IN HIGH-RESOLUTION IMAGES BASEDON BAYESIAN NETWORK
Chuan Xu, Yuanyuan Feng, Juan Du
Page(s) 5
Conference Paper (PDF, 352 KB)