摘要
基于阴影映射算法,提出一种半透明物体表面阴影的渲染方法.考虑半透明物体的次表面散射的光学特性,在获得阴影图后加入阴影接收表面的材质散射系数,确定随机取样的范围,使用加权平均方法计算目标点处于阴影区域的概率值,最终渲染场景.实验证明,该方法能够真实模拟半透明物体表面阴影中散影区的渲染效果.
Based on shadow mapping,an algorithm of rendering shadows on translucent objects is presented.Considering sub-surface scattering optical properties of translucent objects,after getting the shadow map,this algorithm uses the scattering coefficient of translucent objects to determine the scope,then computes the probability value of the target point,renders the scene at last.Experimental result shows that the method can simulate the scatter shadows on translucent objects realistically.
出处
《东华大学学报(自然科学版)》
CAS
CSCD
北大核心
2015年第5期646-649,658,共5页
Journal of Donghua University(Natural Science)
基金
国家自然科学基金资助项目(61173105
61373085)
关键词
阴影渲染
阴影映射算法
次表面散射
随机采样
shadow rendering
shadow mapping
sub-surface scattering
random sampling