Jatin Chhugani Budirijanto Purnomo Shankar Krishnan Jonathan D. Cohen Suresh Venkatasubramanian David S. Johnson Subodh Kumar vLOD: High-Fidelity Walkthrough of Large Virtual Environments. 35-47 2005 11 IEEE Trans. Vis. Comput. Graph. 1 http://csdl.computer.org/comp/trans/tg/2005/01/v0035abs.htm db/journals/tvcg/tvcg11.html#ChhuganiPKCVJK05