Abstract: A virtual scene real time navigation system is designed and implemented based on spherical panorama. Spherical panorama rendering can be achieved by re-projection method. Different perspective views of the virtual scene can be obtained by re-projecting visible portion of the spherical panorama onto the view plane. Camera rotation can be accomplished with the re-projection of a spherical panorama and image rotation, and camera zooming can be accomplished through changing the camera’s field of view. In order to achieve real-time rendering demand, the paper analyses the re-projection process carefully and uses look-up tables and incremental computing to accelerate spherical panorama rendering. The system can render virtual scene based on spherical panorama in real time with high frame per second.

Key words: spherical panorama, image re-projection, real-time rendering, look-up table, incremental computing