Abstract
Over the past few decades, geoportals have been considered as the key technological solutions for easy access to Earth observation (EO) products, and the implementation of spatial data infrastructure (SDI). However, less attention has been paid to developing an efficient model for crowdsourcing EO products through geoportals. To this end, a new model called the “Open Community-Based Crowdsourcing Geoportal for Earth Observation Products” (OCCGEOP) was proposed in this study. The model was developed based on the concepts of volunteered geographic information (VGI) and community-based geoportals using the latest open technological solutions. The key contribution lies in the conceptualization of the frameworks for automated publishing of standard map services such as the Web Map Service (WMS) and the Web Coverage Service (WCS) from heterogeneous EO products prepared by volunteers as well as the communication portion to request voluntary publication of the map services and giving feedback for quality assessment and assurance. To evaluate the feasibility and performance of the proposed model, a prototype implementation was carried out by conducting a pilot study in Iran. The results showed that the OCCGEOP is compatible with the priorities of the new generations of geoportals, having some unique features and promising performance.
Highlights
Efficient management, use, and sharing of geographic information is integral to the achievement of good governance and sustainable development objectives and brings significant economic, social, and environmental benefits to the countries
The results showed that the OCCGEOP is compatible with the priorities of the new generations of geoportals, having some unique features and promising performance
Inofthis bywas using the by prototype system,for a set of Earth observation (EO) products products in Iran
Summary
Use, and sharing of geographic information is integral to the achievement of good governance and sustainable development objectives and brings significant economic, social, and environmental benefits to the countries. The geoportal allows the data consumers to access, search and discover geospatial data and enables data producers to publish and share geospatial data. This online infrastructure may provide other geographic information services such as data visualization, editing, and analysis to its various stakeholders [1,2]. The geospatial data are distributed and made available by the different data producers using a variety of technologies and formats In this term, the geoportal provides effective solutions to the geospatial data interoperability; it facilitates the multi-source data integration and enables the stakeholders to access the geospatial information and maps in the standard formats [3]. Due to the key functions and unique characteristics, and high demand for Earth observation (EO) products (raw and processed imagery), along with the general-purpose geoportals, the specialized geoportals have been designed and implemented exclusively for EO products [8,9,10]
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