Songnian Li – författare

Advances in Web-based GIS, Mapping Services and Applications is published as part of ISPRS WG IV/5 effort, and aims at presenting (1) Recent technological advancements, e.g., new developments under Web 2.0, map mashups, neogeography and the like; (2) Balanced theoretical discussions and technical implementations; (3) Commentary on the current stages of development; and (4) Prediction of developments over the next decade. Containing 21 contributions from 60 researchers active within ISPRS communities, most of them from academia and some from governments, the book covers a wide range of topics related to the state-of-the-art in web mapping/GIS and geographic information services. The volume is organized in five sections:1. Analytical and Geospatial Services;2. Performance;3. Augmentation and LBS;4. Collaboration and Decision Making, and 5. Open Standards for Geospatial Services.Supported by a considerable number of technical details and examples, an overall view of the current achievements and progress made in the field of web-based GIS and mapping services is given. The chapters reflect timely and future developments addressing: constant updating of related web and geospatial technologies as well as the revolution of web mapping caused by mainstream IT vendors such as Google, Yahoo and Microsoft; increased interest from industry on geo-spatial information technologies; and increasing demand from the general public for prompt and effective spatial information services. Advances in Web-based GIS, Mapping Services and Applications will appeal to academia and researchers, application specialists and developers, practitioners, and undergraduate and graduate students interested in distributed and web-based geoinformation systems and applications, geodatabases, and digital mapping.

This book aims to summarize and report the major research achievements and validation results under the global land cover (GLC) initiative led by the Group Earth Observation (GEO). The first part of the book introduces the major tasks and challenges facing the validation of finer-resolution GLC maps and presents the concepts and overall framework of the GEO-led initiative. Chapters 2-5 provide systematic introductions to the major methodology of finer-resolution GLC map validation, including sampling design, reference data collection, sample labeling, and accuracy assessment. Chapter 6 introduces the online validation tools that have been developed, including their design, considerations, and functionalities. Chapter 7 presents the international validation practices and the results of validating GlobeLand30 at country, regional, and global scales. Future directions are also discussed in the Conclusion chapter.FeaturesPresents complete coverage of land cover validation, from concepts, methodology, and col­ laborative tools to applications.Details algorithms, techniques, and methods for land cover validation, including sampling, judgment, and accuracy assessment.Reviews some of the software tools that can be used for GLC validation and discusses the issues related to the design, usability, efficiency, and limitations of these tools.Highlights case studies of validation at global, regional, and national scales, which can serve as great references for researchers.Provides an extensive bibliography covering the whole scope of land cover validationGlobal Land Cover Validation: Methodology, Tools, and Practices serves as a reference for those engaged in land cover validation, especially at a global scale, including students, professionals, researchers, and general practitioners. It is also an excellent resource for professionals involved in sustainable development monitoring, environmental change studies, natural resource management, disaster assessment and mitigation, and many other applications.

This book aims to summarize and report the major research achievements and validation results under the global land cover (GLC) initiative led by the Group Earth Observation (GEO). The first part of the book introduces the major tasks and challenges facing the validation of finer-resolution GLC maps and presents the concepts and overall framework of the GEO-led initiative. Chapters 2-5 provide systematic introductions to the major methodology of finer-resolution GLC map validation, including sampling design, reference data collection, sample labeling, and accuracy assessment. Chapter 6 introduces the online validation tools that have been developed, including their design, considerations, and functionalities. Chapter 7 presents the international validation practices and the results of validating GlobeLand30 at country, regional, and global scales. Future directions are also discussed in the Conclusion chapter.FeaturesPresents complete coverage of land cover validation, from concepts, methodology, and col­ laborative tools to applications.Details algorithms, techniques, and methods for land cover validation, including sampling, judgment, and accuracy assessment.Reviews some of the software tools that can be used for GLC validation and discusses the issues related to the design, usability, efficiency, and limitations of these tools.Highlights case studies of validation at global, regional, and national scales, which can serve as great references for researchers.Provides an extensive bibliography covering the whole scope of land cover validationGlobal Land Cover Validation: Methodology, Tools, and Practices serves as a reference for those engaged in land cover validation, especially at a global scale, including students, professionals, researchers, and general practitioners. It is also an excellent resource for professionals involved in sustainable development monitoring, environmental change studies, natural resource management, disaster assessment and mitigation, and many other applications.