Abstract
Nowadays, the existence of metadata is one of the most important aspects of effective discovery of geospatial data published in Spatial Data Infrastructures (SDIs). However, due to lack of efficient mechanisms integrated in the data workflow, to assist users in metadata generation, a lot of low quality and outdated metadata are stored in the catalogues. This paper presents a mechanism for generating and publishing metadata through a publication service. This mechanism is provided as a web service implemented with a standard interface called a web processing service, which improves interoperability between other SDI components. This work extends previous research, in which a publication service has been designed in the framework of the European Directive Infrastructure for Spatial Information in Europe (INSPIRE) as a solution to assist users in automatically publishing geospatial data and metadata in order to improve, among other aspects, SDI maintenance and usability. Also, this work adds more extra features in order to support more geospatial formats, such as sensor data.
Highlights
The current trend is to deploy and organize Geospatial Information (GI) into what is known as Spatial Data Infrastructures (SDIs) [1]
In the Geographic Information System (GIS) field, there are services, where their particularities differentiate between services for general purposes [2]
In the case of the spatial data infrastructures (SDI), where content is registered in catalogue services, this parameter contains the endpoint to the metadata available in the catalogue service that contains the description of the content that has just been published
Summary
The current trend is to deploy and organize Geospatial Information (GI) into what is known as Spatial Data Infrastructures (SDIs) [1]. INSPIRE regulates different service categories depending on the functionality: discovery, view, download, transformation and invocation This imposes a life cycle of geospatial content in distributed environments, which can be described in four steps as illustrated in Figure 1 [9]. The main improvements of GSF are: (a) it offers an interoperable standard service to publish different kinds of geospatial data; (b) it links data publication to metadata generation and publication in order to update the metadata with their geospatial data; and (c) it generates standarized metadata using transformation templates.
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