To date augmented realities are typically operated in only a small de ned area, in the order of a large room. This paper reports on our investigation into expanding augmented realities to outdoor environments. The project entails providing visual navigation aids to users. A wearablecomputer system with a see-through display, digital compass, and a di erential GPS are used to provide visual cues while performing a standard orienteering task. This paper reports the outcomes of a set of trials using an o the shelf wearable computer, equipped with a custom built navigation software package, \map-in-the-hat."
Bruce H. Thomas, Victor Demczuk, Wayne Piekarski,