Research On GPU Based 3D Chinese Painting Animation

With the development of GPU and the technology of 3D animation, A research on the technology of 3D Chinese painting animation is made based on GPU through close observation and quantitative analysis to Chinese painting.First, we will introduce our research work on basic rendering methods, such as outline rendering, inside rendering and single-brush rendering. We determine the range of the points on the silhouette using the value of cosine of the angle between view vector and normal vector. Besides, we add a width-controller to make our method suitable for models with different level of complexity. After getting the basic character by silhouette rendering, we use the light model to spread ink onto the 3D model and quantize the ink color based on an index of color degree. Then the rendered 2D image will be processed by filter box to produce a Chinese painting styled image with ink diffusion. The main idea for single-brush painting is fetching the center line and then rendering with an specified brush.In addition, we did some research on other rendering method-color rendering. We introduce KM color model into our rendering method to exhibit the color rendering effect in Chinese painting. Research on this method will play a very important role for enriching the expression of Chinese painting.We propose a method of ink diffusion in 3D space. Based on the original character of the model, we put some lines on the surface of the model, evaluate every point of the line with a float number as the grey degree. After interpolation, we can get the hire-liked ink diffusion effect in 3D space. Based on the idea of 3D animation and LOD, we propose a method for the transition of different rendering methods when the model is moving.All our algorithms are implemented on GPU, making full use of the acceleration of graphic hardware on texture search and dot multiplication, and they are really fast.Our research makes a great sense for developing the traditional Chinese painting and widening the research area on computer graphics. Furthermore, our work has a great practical effect on making Chinese painting styled 3D animation.