Scanning and rendering scene tunnels for virtual city traversing

  • Authors:
  • Jiang Yu Zheng;Yu Zhou;Min Shi

  • Affiliations:
  • Indiana Uni. Purdue Uni. Indianapolis, Indianapolis;Indiana Uni. Purdue Uni. Indianapolis, Indianapolis;Indiana Uni. Purdue Uni. Indianapolis, Indianapolis

  • Venue:
  • Proceedings of the ACM symposium on Virtual reality software and technology
  • Year:
  • 2004

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Abstract

This paper proposes a visual representation named scene tunnel to capture and visualize urban scenes for Internet based virtual city traversing. We scan cityscapes by using multiple cameras on a vehicle that moves along a street, and generate a real scene archive more complete than a route panorama. The scene tunnel can cover high architectures and various object aspects, and its data size is much less than video. It is suitable for image transmission and rendering over the Internet. The scene tunnel has a uniformed resolution along the camera path and can provide continuous views for visual navigation in a virtual or real city. This paper explores the image acquisition methods from slit calibration, view scanning, to image integration. A plane of scanning is determined for flexible camera setting and image integration. The paper further addresses the city visualization on the Internet that includes view transformation, data streaming, and interactive functions. The high-resolution scenes are mapped onto a wide window dynamically. The compact and continuous scene tunnel facilitates the data streaming and allows virtual traversing to be extended to a large area.