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Social and Behavioral Sciences Commons™
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Full-Text Articles in Social and Behavioral Sciences
Crowdsourcing The Georeferencing Of Historical Pictures, Timothée Produit, Nicolas Blanc, Sarah Composto, Jens Ingensand, Loic Furhoff
Crowdsourcing The Georeferencing Of Historical Pictures, Timothée Produit, Nicolas Blanc, Sarah Composto, Jens Ingensand, Loic Furhoff
Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings
Countless organizations own archive pictures which are not used due to the difficulty of localizing them. Only the participation of volunteers can help to identify the image content. Through an accessible web interface called smapshot, citizens are able to georeference historical images without any prior specific competence. To avoid the volunteers to face the complexity of 3D digitization and navigation, we implemented a state of the art photogrammetry camera orientation algorithm in the platform. Currently several thousand images from all around Switzerland have been georeferenced by the crowd. At this time the tool is mainly used by the population for …
Mapping Wifi Measurements On Openstreetmap Data For Wireless Street Coverage Analysis, Andrea Valenzano, Dario Mana, Claudio Borean, Antonio Servetti
Mapping Wifi Measurements On Openstreetmap Data For Wireless Street Coverage Analysis, Andrea Valenzano, Dario Mana, Claudio Borean, Antonio Servetti
Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings
The growing interest on smart cities and the deployment of an ever increasing number of smart objects in public locations, such as dumpsters, traffic lights, and manholes, requires ubiquitous connectivity for these devices to communicate data and to receive configurations. Opportunistic WiFi connectivity is a valid alternative both to ad hoc solutions, like LoRa, which require costly deployments, and to communicating through the mobile network, which is both pricey and battery power hungry. In this paper we present a tool to analyze the WiFi coverage of home Access Points (AP) on the city streets. It can be of interest to …