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International Journal of Computer Games Technology
Volume 2014 (2014), Article ID 308629, 13 pages
http://dx.doi.org/10.1155/2014/308629
Research Article

Foggy Scene Rendering Based on Transmission Map Estimation

School of Information Science and Engineering, Central South University, Changsha, Hunan 410083, China

Received 4 May 2014; Revised 3 September 2014; Accepted 29 September 2014; Published 19 October 2014

Academic Editor: Mark Green

Copyright © 2014 Fan Guo et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Realistic rendering of foggy scene is important in game development and virtual reality. Traditional methods have many parameters to control or require a long time to compute, and they are usually limited to depicting a homogeneous fog without considering the foggy scene with heterogeneous fog. In this paper, a new rendering method based on transmission map estimation is proposed. We first generate perlin noise image as the density distribution texture of heterogeneous fog. Then we estimate the transmission map using the Markov random field (MRF) model and the bilateral filter. Finally, virtual foggy scene is realistically rendered with the generated perlin noise image and the transmission map according to the atmospheric scattering model. Experimental results show that the rendered results of our approach are quite satisfactory.