This paper addresses three research issues for the virtual heritage system: 3D modeling, 3D media asset database management, and interactive presentation through networks. We first show art overview of our virtual heritage system and introduce our approaches on each research issue. We develop 3D modeling environment using both of two emerging techniques, i.e., image-based 3D modeling and 3D laser scanning-based 3D modeling techniques. Each technique captures range data of 3D objects using 3D input devices and uses 3D mesh modeling scheme. Our test results from both of these trials are shown. One of the important tasks for the virtual heritage system is how to manage the various kinds of cultural heritage assets. For this goal, our approach for an asset management is described. This includes the system configuration and asset creation method. Finally, we address how to present the virtual heritages. Here, we show two approaches, Web-based and virtual reality theater-based system. We also address the networking issues for transcontinental cultural heritage exchange and our future plan for the 3D cyber museum through the Trans-Eurasia Information Network.

http://www.researchgate.net/profile/Sang_Ahn4/publication/3927479_Virtual_heritage_system_modeling_database__presentation/links/0deec533b643bcbf2a000000.pdf

Virtual heritage system: modeling, database & presentation

CAVE systems are nowadays one of the best Virtual Reality (VR) immersive devices available for rendering virtual environments. Unfortunately, such kind of hardware is extremely expensive, complex and cumbersome, thus limited in its spread. Several cheaper solutions already exist, but they implement usually only a subset of features of a professional CAVE. In this paper we describe how we have built a low cost CAVE with four screens (three walls and a floor), stereographic rendering and user tracking by only using hardware commonly available on the market and free software, we show the different solutions and work-around we implemented to solve the problems we encountered and we conclude with an evaluation of our system by using two applications we developed with it.

http://www.peternier.com/research/publications/pdf/grapp2007.pdf

PRACTICAL DESIGN AND IMPLEMENTATION OF A CAVE SYSTEM - High Quality Four Walls CAVE Howto

Recently, virtual heritage has emerged as a promising technology for conservation, preservation, and interpretation of our culture and natural history. We implemented a virtual heritage system with real data acquisition and a MPEG-21 based graphics adaptation architecture for transmitting adapted 3D contents to multiple target devices. Our system consists of 3D modeling tools, 3D content authoring tools, 3D database system and 3D graphics adaptation system. In this paper, we provide a overview of our system, including our approach in 3D modeling, a web-based interactive presentation over network and proposed a graphics adaptation system within MPEG-21 framework for transmitting adapted 3D contents to multiple target devices with different user preferences.

3D modeling and adaptation for virtual heritage system

Practical design and implementation of a cave system - high quality four walls cave howto.

This paper introduces web-based 3D media information system. We first address two promising 3D modeling techniques, i.e., image-based 3D modeling and laser scanning based 3D modeling. Especially, we present two approaches of the image-based 3D modeling. One is an off-line approach using multiview images which is captured with single camera and a robot arm. The another one is an on-line approach that extends a commercial triclops camera system. We also utilize a 3D modeling scheme based on a laser scanner and a 3D reverse modeler. Using our 3D modeling environments, we construct several kinds of 3D models. We also implement web-based 3D media information management and retrieval system using XML data server, which provides services of 3D models. Our web-based 3D media information system has a goal of services of various types of 3D models and contents through WWW, which is currently focused on the development and management of 3D models of Korea cultural heritage.

김형곤

Papers

Multiresolution approach to depth extraction for arbitrary view synthesis

Active IR Stereo Vision Based Tracking System For Immersive Displays