基于图像的风化仿真

Weathering Simulation Based on Image

研究了图像的风化仿真技术,分析该技术的发展过程,提出有效的解决方案。外观流行是处理图像风化过程的一种方法,它通过分析某一瞬间材料表面BRDF数据来实现。但该方法很难应用于具有阴影成分的表面图像,也无法体现物体轮廓的侵蚀变化。应用滤波分离技术,首先提取图像阴影部分,然后结合外观流行技术生成图像的风化度贴图,通过风化度单调变化来渲染风化过程。同时,根据图像中物体的曲率特征,实现物体轮廓的侵蚀变化。

Detailed researches are conducted on weathering simulation based on image, and the evolution of this technology in the world is analyzed. Then, an efficient scheme is proposed to deal with this problem. Appearance manifolds is an effective method by analyzing the BRDF data captured from material surface at one second. While, it can＇ t work on image with shadow areas or silhouette erosion of objects. This paper extracts the shading part by filtering technology, and generates the weathering degree map combined with appearance manifolds. The weathering process is edited as weath- ering degree varies monotonously. Meanwhile, silhouette erosion is realized on the basis of curvature features.