Augmented Reality and HTML5 - The Future of Mobile App Development

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  Presented at the Atlanta HTML5 Meetup
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  • 1. Augmented Reality + HTML 5 = Argon
  • 2. Marker-based AR <ul><li>Uses specially-designed markers to deliver content. </li></ul><ul><ul><li>Images or video </li></ul></ul><ul><ul><li>3D models </li></ul></ul>
  • 3. Location-based AR <ul><li>C ombines the geo-location capabilities of a smart phone with the phone’s video camera to overlay location-relevant information </li></ul><ul><ul><li>Targeted to iPhone and Android devices </li></ul></ul><ul><ul><li>Third-party programs have been developed to distribute and display location-based AR content: </li></ul></ul><ul><ul><ul><li>LayAR </li></ul></ul></ul><ul><ul><ul><li>Wikitude </li></ul></ul></ul><ul><ul><ul><li>Argon </li></ul></ul></ul>
  • 4. <ul><li>Currently under development by the Augmented Environments Lab (AEL) at Georgia Tech </li></ul><ul><li>2nd iteration (v1.2.0) is available in the iTunes AppStore </li></ul><ul><li>Leverages an extended version of KML called “KARML” to render points of interest </li></ul><ul><li>Visual elements are rendered using HTML 5 by way of WebKit </li></ul><ul><li>Includes a Javascript API for dynamically altering geo-spatial information </li></ul><ul><li>jQuery is bundled into the app </li></ul><ul><li>Distinct AR experiences are represented as separate “Channels” </li></ul><ul><li>Channels are served via .kml files hosted on a web server </li></ul>
  • 5. KML <ul><li>Developed for use with Google Earth </li></ul><ul><li>XML-based language schema for expressing geographic annotation and visualization </li></ul><ul><li>HTML, CSS, and Javascript can be included in the <description> element, wrapped in a CDATA section </li></ul>
  • 6. KARML <ul><li>KARML extends KML by extending/adding a few elements that are geared towards authoring AR experiences: </li></ul><ul><ul><li>Label (extended) </li></ul></ul><ul><ul><li>Balloon (extended) </li></ul></ul><ul><ul><li>Tracker </li></ul></ul><ul><ul><li>Sound </li></ul></ul>
  • 7. <Placemark> <ul><li>The <Placemark> element is the core element for building AR experiences with KARML </li></ul><ul><li>Sounds, balloons, labels, and GeoSpots can all be attached to placemarks </li></ul><ul><ul><li>GeoSpots are defined via <Camera> or <LookAt> nested within a <Placemark> </li></ul></ul><ul><li>GeoSpots are special points of interest that are tied to the user’s location </li></ul><ul><li>Argon provides three ways to activate a GeoSpot: </li></ul><ul><ul><li>The User manually sets their location within the Argon app </li></ul></ul><ul><ul><li>The User wanders into a GeoSpot and the app actively recognizes it </li></ul></ul><ul><ul><li>The GeoSpot is set dynamically via the Javascript API </li></ul></ul>
  • 8. Why are GeoSpots important? <ul><li>GPS/Cellular location sensors are only accurate to within 8-20 meters in daily use (though “Wi-Fi assist” can improve accuracy) </li></ul><ul><li>GeoSpots can be used to “enforce” 100% accuracy by communicating the User’s location directly to Argon </li></ul><ul><li>Special content can be associated with GeoSpots: </li></ul><ul><ul><li>360-degree panoramic images that effectively “surround” the User </li></ul></ul><ul><ul><li>Sounds </li></ul></ul>
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