ARCHAVE ARCHAVE A Three Dimensional GIS For a CAVE Environment Team: Eileen Vote Daniel Acevedo Feliz Martha Sharp Joukowsky David H. Laidlaw

Introduction The SHAPE Lab was created with a grant from the US National Science Foundation in 1999 to deal with problems in computer vision using archaeological data from the Great Temple Site. It is a multidisciplinary endeavor which involves the departments of Computer Science, Engineering, Applied Math, Old World Archaeology and Art and Anthropology. The ARCHAVE Project uses VR technology for research in Archaeology. The system has been in progress since November, 1999 and the first phase of development, which will be presented here is almost complete. We will present a basic 3D model and show it’s functionality in the CAVE virtual environment. 1.- Introduction 2.- Motivation 3.- Project goals 4.- Video 5.- Issues 6.- Impact ARCHAVE: A Three Dimensional GIS For A CAVE Environment

1.- Introduction 2.- Motivation 3.- Project goals 4.- Video 5.- Issues 6.- Impact ARCHAVE: A Three Dimensional GIS For A CAVE Environment Introduction  Brown University excavations at the Great Temple of Petra (Jordan) since 1993.

 General issues associated with a large site and data set. - Great Temple site is the size of a football field trenches.  Analysis problems: - Strict statistical associations exclude information. - The archaeologist has an empirical association with the data and can make conclusions easily from memory. Other users don’t have this extensive knowledge. ARCHAVE: A Three Dimensional GIS For A CAVE Environment Motivation ARCHAVE: A Three Dimensional GIS For A CAVE Environment 1.- Introduction 2.- Motivation 3.- Project goals 4.- Video 5.- Issues 6.- Impact

ARCHAVE: A Three Dimensional GIS For A CAVE Environment  ArcView with 3D Analyst  Limited data representation  Scale issues  No multivariable representation Motivation 1.- Introduction 2.- Motivation 3.- Project goals 4.- Video 5.- Issues 6.- Impact

ARCHAVE: A Three Dimensional GIS For A CAVE Environment Immediate Aim: To develop a format of the data and site that is more complete and real to the user (in a year or in fifty+ years) and can be used by anyone who wants to become acquainted with the site. Hypothesis: A Virtual Reality interface for a GIS or 3D database will allow archaeologists to easily identify and successfully analyze more complex interrelationships from the field-data. Project Goals 1.- Introduction 2.- Motivation 3.- Project goals 4.- Video 5.- Issues 6.- Impact

ARCHAVE: A Three Dimensional GIS For A CAVE Environment Expectations 1.Better understand the context of the data 2.Gain freedom of movement through the dataset (site, architecture and artifacts) 3.Move away from specific “fixed” format database structures Eventually, with the system fully developed…  More complex queries with several data types “overlaid”  Progress from simple data viewing to interacting with data 1.- Introduction 2.- Motivation 3.- Project goals 4.- Video 5.- Issues 6.- Impact

Tests Use different user interfaces to evaluate the success of the system. Compare classical approach (without system) to navigation and queries: + Workstation (desktop version) + Workbench + HMD (Head Mounted Display) + CAVE – current testing ARCHAVE: A Three Dimensional GIS For A CAVE Environment 1.- Introduction 2.- Motivation 3.- Project goals 4.- Video 5.- Issues 6.- Impact

ARCHAVE: A Three Dimensional GIS For A CAVE Environment Video Demonstration 1.- Introduction 2.- Motivation 3.- Project goals 4.- Video 5.- Issues 6.- Impact

ARCHAVE: A Three Dimensional GIS For A CAVE Environment Operating Issues  VR systems are very expensive  System processing limit constrains detail that can be shown. Current model is 200,000 polygons. Output = 1.6 million polygons per second.  Creating accurate model of site and data requires knowledge of specialized software (AutoCAD, 3D Studio, World Tool Kit)  Navigation and scale issues 1.- Introduction 2.- Motivation 3.- Project goals 4.- Video 5.- Issues 6.- Impact

ARCHAVE: A Three Dimensional GIS For A CAVE Environment 3D Visualization Issues  Transcend typical representations of data. Collaboration with Cognitive Science to develop ways of seeing multiple types of data at once and understanding it. - Not necessary to show strictly literal representations of data - Possibility to try “painterly” representation of data - 3D texturing 1.- Introduction 2.- Motivation 3.- Project goals 4.- Video 5.- Issues 6.- Impact

ARCHAVE: A Three Dimensional GIS For A CAVE Environment Methodological Issues  Role of the 3D representations of existing and reconstructed evidence - How are reconstructed artifacts and architecture represented in the system so that the user differentiates. - Danger in allowing users to accept a reconstruction without evidence  Visual information has to be recorded correctly, accurately and must be standardized 1.- Introduction 2.- Motivation 3.- Project goals 4.- Video 5.- Issues 6.- Impact

Impact  Intra and inter-site collaboration. Link sites and systematically compare artifacts.  New Visualization technology can be used in other areas for 3D databases and visualization issues. 1.- Introduction 2.- Motivation 3.- Project goals 4.- Video 5.- Issues 6.- Impact