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| 1 | Digital Earth 2020:towards the vision for the next decade显示文摘This position paper is the outcome of a brainstorming workshop organised by the International Society for Digital Earth(ISDE)in Beijing in March 2011.It argues that the vision of Digital Earth(DE)put forward by Vice-President Al Gore 13 years ago needs to be re-evaluated in the light of the many developments in the fields of information technology,data infrastructures and earth observation that have taken place since.The paper identifies the main policy,scientific and societal drivers for the development of DE and illustrates the multi-faceted nature of a new vision of DE grounding it with a few examples of potential applications.Because no single organisation can on its own develop all the aspects of DE,it is essential to develop a series of collaborations at the global level to turn the vision outlined in this paper into reality. | Max Craglia Kees de Bie Davina Jackson Martino Pesaresi Gabor Remetey-Fulopp Changlin Wang Alessandro Annoni Ling Bian Fred Campbell Manfred Ehlers John van Genderen Michael Goodchild Huadong Guo Anthony Lewis Richard Simpson Andrew Skidmore Peter Woodgate | 2012 | International Journal of Digital Earth2012，5，1： | 8 |
| 2 | 遥感与GIS:朝着一体化空间信息处理的方向发展显示文摘近几年来,许多与地球有关的学科,包括城市和区域规划、自然资源管理、农业研究、地形测绘和地质勘探等,对最新、精确信息的需求日益迫切。为满足需求,热门话题是开发地理信息系统(GIS)。GIS能有效地存贮和检索数据,具有处理和显示功能,且为遥感数据综合利用奠定了基础。然而,使基于不同空间概念的遥感与GIS真正一体化,尚有一些障碍。本文分析了这些障碍,同时阐述了排除障碍的策略。迄今为止,遥感与GIS一体化应用的例子,包括地形测绘/DEM数据自动提取、制图特征提取、提高空间分辨率和城市与区域规划等。 | Manfred Ehlers 金逸民 | 1991 | 遥感信息1991，13，2： | 3 |
| 3 | Initial investigations for modeling interior Utilities within 3D Geo Context:Transforming IFC-interior utility to CityGML/Utility Network ADE显示文摘 | Ihab Hijazi Manfred Ehlers | | 0，，： | 1 |
| 4 | Advancing Digital Earth:beyond the next generation显示文摘The Digital Earth(DE)movement is gaining momentum.Much of it is unstructured.This paper examines a number of recent developments including those in health sensors(Wearable Absence,Q-Sensor,and Guardian Angels)and systems frameworks(Gelernter’s Mirror Worlds,Virtual Australia,and New Zealand).Consideration is given to the implications of DE for citizens and on citizen science,including those of ethics.A suite of principles to guide the development of DE is proposed. | Manfred Ehlers Peter Woodgate Alessandro Annoni Sven Schade | 2014 | International Journal of Digital Earth2014，7，1： | 1 |
| 5 | A Framework for the Modeling of Uncertainty between Remote Sensing and Geographic Information Systems显示文摘 | Ehlers Manfred | 2000 | ISPRS Journal of Photogrammetry and Remote Sensing2000，55，3： | 1 |
| 6 | Integration of Remote Sensing with Geographic Information System:A Necessary Evolution显示文摘 | Manfred Ehlers | 1989 | PE &RS1989，55，11： | 1 |
| 7 | Automated Analysis of Ultra High Resolution Remote Sensing Data for Biotope Type Mapping:New Possibilities and Challenges显示文摘 | Ghler Monika Janowsky Ronald | 2003 | Journal of Photogrammetry and Remote Sensing2003，57，： | 1 |
| 8 | A framework for the modeling of uncertainty between remote sensing and geographic information systems 显示文摘 | Gahegan Mark Ehlers Manfred | 2000 | ISPRS Journal of Photogrammetry and Remote Sensing2000，55，3： | 1 |
| 9 | NIBU: a new approach to representing and analysing interior utility networks within 3D geo-information systems显示文摘Facility management departments’responsibilities include monitoring and maintenance of building infrastructure,such as water,gas or electricity.Very often these tasks are completed using paper maps,which make integrated analysis of networks challenging.Ability to consider interior network structure and provide semantic and connectivity information supporting the required analysis operations are thus crucial.This paper presents an approach relying on Building Information Model(BIM)as a data source for obtaining information about interior utilities.The semantic and connectivity information of BIM is mapped onto a new model called Network for Interior Building Utilities(NIBU).NIBU is based on the semantic categorisation of utilities,and the spatial functions that have to be performed.Three scenarios(‘maintenance operation’,‘emergency response’and‘inspection operation’)are developed to test the proposed approach.The model and its functions are implemented in spatial DBMS.The model is populated directly from a BIM server applying an Industrial Foundation Class(IFC)parser developed in-house.Five analysis functions are implemented to support spatial operations:trace upstream,trace downstream,find ancestors,find source and find disconnected.The investigation proves that BIM provides both the required semantics and attributes,and connectivity information that can facilitate analysis of interior utility networks.NIBU provides a simple yet flexible way to manage interior network information,which can be integrated into Digital Earth. | Ihab Hamzi Hijazi Manfred Ehlers Sisi Zlatanova | 2012 | International Journal of Digital Earth2012，5，1： | 0 |
| 10 | 遥感与地理信息系统:向空间信息综合处理的方向发展显示文摘近年来,由于城市与区域规划、自然资源管理、农业研究、地形制图以及地质勘探等地球相关学科的发展,对及时、准确的信息需求急剧增加。地理信息系统(GIS)是解决这个问题的一个较成熟的方法。该系统具有处理和显示的双重功能,可以进行有效的数据存贮和检索,还可以同数字遥感数据相结合。但是,遥感数据和地理信息系统是基于不同的空间概念,二者的有效结合尚存在障碍。本文指出了所存在的主要问题及其解决方案。目前,在地形制图/数字高程模型(DEM)的自动提取、地图特征提取、空间分辨率的改善和城市及区域规划等领域,都有遥感和地理信息系统综合应用的范例。 | MANFRED EHLERS 盛永伟 | 1991 | 遥感技术与应用1991，6，1： | 0 |
| 11 | NIBU:An Integrated Framework for Representing the Relation Among Building Structure and Interior Utilities in Micro-Scale Environment显示文摘This paper describes a framework for modeling interdependencies between different network systems and building structures.It provides an approach for the integrated analysis of interior building utilities by describing a framework to model and simulate infrastructure interdependencies and their complex behaviors.It is a graph-based spatial model that can support use cases such as providing the location and specifications of interior utilities to a technician who wants to perform a maintenance operation.This location could be needed for maintenance or replacement,or to investigate the result of damage to the building structure on another utility network,or to estimate the effect of different maintenance operations in different locations along utilities service systems.The model accounts for two important aspects:first,the relationship between interior utilities and building elements or spaces and second,the building hierarchy structure to which the utilities network is related.A proper hierarchy of the building is developed which supports the generation of human-oriented descriptions of interior utilities,where a method for partitions of large building element and spaces as well as a method to reference a network element to another building are developed.The connection of the different utilities network systems and buildings are generated using joints,which are based on a containment relation.An example is presented which shows the effectiveness of this approach for supporting maintenance operations,as well as the independences between the maintenance operation location and the other network systems.The paper presents the data model and explains the links with current 3D building model standards. | Ihab HIJAZI Sisi ZLATANOVA Manfred EHLERS | 2011 | Geo-Spatial Information Science2011，14，2： | 0 |
| 12 | A comparative data-fusion analysis of multi-sensor satellite images显示文摘Remote-sensing data play an important role in extracting information with the help of various sensors having different spectral,spatial and temporal resolutions.Therefore,data fusion,which merges images of different spatial and spectral resolutions,plays an important role in information extraction.This research investigates quality-assessment methods of multisensor(synthetic aperture radar[SAR]and optical)data fusion.In the analysis,three SAR data-sets from different sensors(RADARSAT-1,ALOS-PALSAR and ENVISAT-ASAR)and optical data from SPOT-2 were used.Although the PALSAR and the RADARSAT-1 images have the same resolutions and polarisations,images are gathered in different frequencies(L and C bands,respectively).The ASAR sensor also has C-band radar,but with lower(25 m)resolution.Since the frequency is a key factor for penetration depth,it is thought that the use of different SAR data might give interesting results as an output.This study describes a comparative study of multisensor fusion methods,namely the intensity-hue-saturation,Ehlers,and Brovey techniques,by using different statistical analysis techniques,namely the bias of mean,correlation coefficient,standard deviation difference and universal image quality index methods.The results reveal that Ehlers’method is superior to the others in terms of spectral and statistical fidelity. | Saygin Abdikan Fusun Balik Sanli Filiz Sunar Manfred Ehlers | 2014 | International Journal of Digital Earth2014，7，8： | 0 |
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