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Inverse Approach for Visual Simulation of Clouds

  • Yoshinori Dobashi
Chapter
Part of the Mathematics for Industry book series (MFI, volume 4)

Abstract

Clouds play an important role for creating realistic images of outdoor scenes. There are two important factors in synthesizing realistic images, that is, shapes and colors of clouds. Many methods have therefore been proposed for modeling and rendering clouds. One of the promising approaches is to numerically simulate the actual physical phenomena. However, realistic images cannot be generated unless the user chooses appropriate parameters involved in the numerical simulation, which is not an easy task. The shapes and colors of the simulated clouds depend on many parameters and it is generally difficult and time-consuming to adjust those parameters manually. This paper presents an inverse approach to address this problem. For cloud shapes, we present a method for controlling the simulation of cloud formation so that the simulated shapes become similar to those specified by the user. For colors of clouds, a method for automatically adjusting the parameters for computing realistic colors by using user-specified photographs of real clouds is presented.

Keywords

Clouds Inverse rendering Fluid simulation Genetic algorithm Feedback control 

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Copyright information

© Springer Japan 2014

Authors and Affiliations

  1. 1.Graduate School of Information Science and TechnologyHokkaido University/JST CRESTSapporoJapan

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