Visual Simulation of Moss Taking into Account Local Environment on Temperature and Humidity

よりリアルに自然景観を表現できるＣＧ技術の開発がますます重要なテーマとなってきている．苔は日本庭園では欠くことのできない構成素材の一つであり，地面や燈籠などの石材物に苔が繁殖している様子は，風情のある印象を与える．本報告では，水辺，地形，植物や石材物などのその他の構成素材など，苔の繁殖に影響を与える生育環境を苔の繁殖シ ミュレーションに反映する方法を提案する．本手法では，粒子ベースの風の流れのシミュレーションにより，生育環境によって定まる温度，湿度および風速の局所的な分布を求め繁殖シミュレーションを行う．The CG technology for more realistically representing the natural scenery is becoming an increasingly important theme. Moss is one of the essential components of Japanese gardens. Most people may be impressed with the Japanese garden whose ground and stonework, e.g. garden lanterns, are tastefully covered by moss. In this paper, we propose the method to take into account the environmental features for the growth simulation of moss by mainly simulating the wind flow. Those features include the waterside, the ground shape and other components' shapes. In our proposed method, the local distribution of temperature, humidity and wind velocity influenced by the environmental features are estimated by employing the particle-based wind flow simulation, and used for the growth simulation of moss