EgoViz – A Mobile Based Spatial Interaction System

Abstract

Abstract. This paper describes research carried out in the area of mobile spatial interaction and the development of a mobile (i.e. on-device) version of a simulated web-based 2D directional query processor. The TellMe application integrates location (from GPS, GSM, WiFi) and orientation (from digital compass/tilt sensors) sensing technologies into an enhanced spatial query processing module capable of exploiting a mobile device's position and orientation for querying real-world 3D spatial datasets. This paper outlines the technique used to combine these technologies and the architecture needed to deploy them on a sensor enabled smartphone (i.e. Nokia 6210 Navigator). With all these sensor technologies now available on one device, it is possible to employ a personal query system that can work effectively in any environment using location and orientation as primary parameters for directional queries. In doing so, novel approaches for determining a user's query space in 3 dimensions based on line-of-sight and 3D visibility (ego-visibility) are also investigated. The result is a mobile application that is location, direction and orientation aware and using these data is able to identify objects (e.g. buildings, points-of-interest, etc.) by pointing at them or when they are in a specified field-of-view.

MobiLAudio – a multimodal content delivery platform for geo-services

“…In Gardiner 2004;Chan et al 2005;Fröhlich et al 2006;Fröhlich 2007a, 2007b;Simon, Fröhlich, and Grechenig 2008;Gardiner, Yin, and Carswell 2009;Carswell, Gardiner and Yin 2010a), the idea of an egocentric view of the world is investigated in a mobile context. In , the idea of using a triangular 2D shape to represent a user's field-of-view (FOv) to query POIs stored in a spatial database was introduced.…”

“…To increase query relevance and reduce information overload further, in (Strachan and Murray-Smith 2009;Gardiner, Carswell and Yin 2009), the idea of generating a more accurate FOv was demonstrated. This research focused on determining the exact shape of the user's viewport.…”

“…In (Strachan, Williamson, and Murray-Smith 2007;Fröhlich, Simon, and Baillie 2009;Gardiner, Yin, and Carswell 2009;Carswell, Gardiner and Yin 2010b), the focus shifted to the area of 3D directional queries, where the idea of 'point-to-query' was investigated. Before this, the idea of performing this specific type of spatial search was not feasible for the following reasons.…”

“…Importantly, it investigates delivering location-based content to the user by means of the phone's aural modality as the primary delivery mechanism. The visual modality is also presented using a graphical user interface (GUI) that incorporates and builds on many of the ideas developed in previous work on mobile spatial interaction for location-based services (LBS) (Carswell, Gardiner, and neumann 2003;Gardiner and Carswell 2003;Gardiner 2004;Gardiner et al 2005;rizzini et al 2006;Kilfeather et al 2007; rooney, Gardiner, Yin, and Carswell 2009;Carswell, Gardiner, and Yin 2010a,b).…”

Touch2Query Enabled Mobile Devices: A Case Study Using OpenStreetMap and iPhone

“…Other innovative applications make use of a combination of integrated GPS and digital compass to perform directional spatial queries where the query shape is a calculated portion of the bounding circle in the pointing direction of the device to simulate a user's actual field-of-view (Gardiner et al, 2009;GeoVector, 2010). A similar approach used in GeoWand and 3DQ (Carswell et al, 2010), where returned query results are only the objects visible within the mobile device's pointing direction.…”