摘要
针对计算机图形学中雪场景的真实感渲染的难题,提出了一种实时绘制高真实感雪景的方法。首先采用类衰减正弦函数模拟雪花运动轨迹,在保证真实性的同时大大提高其实时性;然后基于温度变化与不同地表类型影响,提出了实时积雪-融雪模型,通过计算无损失的热传递积雪方程,提高了交互积雪场景动态渲染的真实性;最后采用GPU图形硬件加速技术提高了整个过程的计算效率,绘制效果逼真。
Snow meticulous rendering is one of the challenging topics in the field of computer graphics. A method for realtime realistic rendering of snow scence was proposed. First of all, the track of attenuation function as snowfall was applied to snow scenes model based on visual snowfall,which was presented to ensure authenticity at the same time to improve its efficiency. Then real-time accumulating-melting snow model was presented based on temperature change and surface types,by calculating the lossless heat transfer equation,interactive dynamic simulation of the snow scene could be improved. Finally the GPU graphics hardware acceleration technology was used to enhance the efficiency of the whole calculating process. Rendering results are realistic.
出处
《计算机科学》
CSCD
北大核心
2010年第4期289-292,共4页
Computer Science
基金
863项目资助
关键词
自然场景模拟
积雪-融雪模型
实时绘制
GPU
Simulation of natural scenes,Accumulating-melting snow model, Real-time rendering,GPU
