Vgi in Automatic Information Retrieval from Big Rs Data
نویسندگان
چکیده
This paper describes how Volunteered Geographic Information (VGI) can support automatic information retrieval (IR) from big remote sensing (RS) data on an example of the Global Human Settlement Layer (GHSL)[1]. Here, the OpenStreetMap 1 (OSM) derived data are used within a satellite imagery processing framework at several stages of an information layer production. Although, we focus on built-up areas, some similarities could be identified in the methods for extracting occurrence estimation of other geographic feature produced by the RS community (e.g. forest coverage). This work introduces briefly the GHSL, the VGI derived datasets and how they are used. A discussion on levered issues related with the VGI data is provided.
منابع مشابه
طراحی وب سرویس مدیریت امدادرسانی پس از وقوع سیل با کمک اطلاعات جغرافیایی داوطلبانه (VGI) بر مبنای تکنولوژی متن باز
Accessibility to precise spatial and real time data plays a valuable role in the velocity and quality of flood relief operation and subsequently, scales the human and financial losses down. Flood real time data collection and processing, for instance, precise location and situation of flood victims may be a big challenge in Iran regarding the hardware facilities (such as high resolution aerial ...
متن کاملTowards Defining a Framework for the Automatic Derivation of 3D CityGML Models from Volunteered Geographic Information
High-quality geographic data sources are eminent for urban data management and the creation of detailed 3D city models. In the last two decades, Volunteered Geographic Information (VGI) increasingly gained attractiveness to both amateur users and professionals, resulting in a broad availability of urban data within VGI communities and especially OpenStreetMap (OSM). OSM provides detailed inform...
متن کاملStudy of Spatial Data Quality Elements and VGI Linear Data Quality Assessment Methods
Volunteered Geographic Information has provided a rich and valuable resource for spatial data in a variety of applications. Despite the many benefits, this information does not provide any guarantee for their quality. So far, there are several methods to determine the quality of VGI. In addition to introducing quality elements and their evaluation methods, the present study attempts to explore ...
متن کاملAutomatic Construction of Persian ICT WordNet using Princeton WordNet
WordNet is a large lexical database of English language, in which, nouns, verbs, adjectives, and adverbs are grouped into sets of cognitive synonyms (synsets). Each synset expresses a distinct concept. Synsets are interlinked by both semantic and lexical relations. WordNet is essentially used for word sense disambiguation, information retrieval, and text translation. In this paper, we propose s...
متن کاملValidation of Volunteered Geographic Information Landuse Change Using Satellite Imagery
Land use change monitoring is one of the main concerns of managers and urban planners due to human activities and unbalanced physical development in urban areas. In this paper, a combination of remote sensing data and volunteered geographic information was used to assess the quality of volunteered geographic information on land use and land cover changes monitoring. For this purpose, the ORBVIE...
متن کامل