一种基于混合反射模型的Shape-From-Shading直接算法  

Direct algorithm of Shape-From-Shading based on hybrid reflectance model

作　　者：杨磊[1] 韩九强[2] 

机构地区：[1]同济大学经济与管理学院,上海200092 [2]西安交通大学电子与信息工程学院,陕西西安710049

出　　处：《系统工程与电子技术》2008年第10期2007-2010,共4页Systems Engineering and Electronics

基　　金：国家自然科学基金(60502021);教育部高等学校博士点专项科研基金(20050698025)资助课题

摘　　要：提出了一种基于混合反射模型的Shape-From-Shading直接算法。使用接近实际的混合反射模型描述的反射图方程作为求解对象,用有限差分近似微分运算,将反射图方程离散化,得到所求高度函数满足的代数方程,进而用迭代算法计算出表面高度。最后,用以合成图像和实际图像的三维形状恢复实验说明提出算法的有效性。A direct algorithm of Shape-From-Shading based on hybrid reflection is proposed. Hybrid reflection models which contain diffuse reflectance and specular reflectance are used as objective equations. When the differential operators are approximated by finite difference, the algebra equations about unknown surface are gained. Then the equations are solved using iterative approach. At last, experiments on synthetic images and real images are performed to illuminate the efficiency of the present method.

关 键 词：明暗恢复形状 混合反射模型 反射图方程 非线性方程 迭代算法 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]