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基于图像集合的室外场景重光照

发表时间:2012-10-31  浏览量:1251  下载量:634
全部作者: 王维,齐越,张梓峰
作者单位: 北京航空航天大学虚拟现实技术与系统国家重点实验室
摘 要: 给出一种各向同性基材质库,并提出基于各向同性基材质线性表达未知材质表面反射属性的方法,结合三重小波积积分绘制框架实现了一种高效的全频环境光照绘制算法,最后基于三重小波积积分正向绘制框架,在已知场景物体几何的条件下,从光传播方程出发,将场景物体表面反射属性和环境光照的求解问题转化为双线性优化问题,并使用双边线性优化方法迭代求解。在实现重光照算法时,使用了并行加速等优化策略。
关 键 词: 计算机图象形学;环境光照绘制;表面反射属性建模;环境光照建模
Title: Outdoor scene relighting based on image collections
Author: WANG Wei, QI Yue, ZHANG Zifeng
Organization: State Key Laboratory of Virtual Reality Technology and Systems, Beihang University
Abstract: In this paper, an entire pipeline of outdoor scene relighting was introduced based on image collections. Initially, this paper proposed an isotropic base materials reflectance library, and presented a linear representation with isotropic base materials. And then, an efficient all-frequency environment rendering algorithm has implemented combined with triple wavelet product integral framework. At last, in the condition of known geometry, and based on triple wavelet product integral rendering framework, the bilinear optimization model about reflectance and environment lighting from the reflection equation could be derived. The linear model is solved iteratively, and the algorithm with parallel acceleration was optimized when implementing.
Key words: computer graphics; environment illumination rendering; surface reflection property modeling; environment lighting modeling
发表期数: 2012年10月第20期
引用格式: 王维,齐越,张梓峰. 基于图像集合的室外场景重光照[J]. 中国科技论文在线精品论文,2012,5(20):1921-1928.
 
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