具有以物理模式為基礎色彩渲染效果的電腦合成中國水墨畫之研究

Abstract

在中國水墨畫中，除了使用墨與水調和出各種不同濃淡的墨色之外，色彩也扮演了一個很重要的角色。要描繪一幅景物時，除了用墨色表現出明暗對比之外，若加入了物體本身的色彩，更可以顯現出物體的本質，進而提升整幅畫的生命力。在本篇論文中，利用真實的物理理論來模擬水與墨/顏料在畫紙上的流動，接著在色彩的表現上，利用Kubelka-Munk的理論，考慮顏料與畫紙之間光線的折射與反射來表現出擬真的顏色，同時使用tablet pen作為輸入裝置，建立了一個可供使用者以各種顏色描繪一幅中國水墨畫的互動式系統。

Water and ink are two important elements in Chinese Ink Painting. By mixing water and ink, we can get different concentrations to show the contrast of an object. To make a painting more vivid, we can also apply the third element, color, to display the nature of an object. In this thesis, we simulate the ink diffusion effects based on observations and analysis of the physical phenomenon, such as the flows of water and ink/pigment on paper. Then we display realistic colors by taking the light reflection and transmission between pigments and paper, namely the Kubelka-Munk theory [15], into consideration. We also use tablet pen as an input device to create an interactive painting system for users to draw a Chinese Ink Painting with color pigments.