计算机工程与科学2018，Vol.40Issue(3)：481-486,6.DOI:10.3969/j.issn.1007-130X.2018.03.013
基于Phong模型的明暗恢复形状的新算法
A new shape-from-shading algorithm based on Phong model
摘要
Abstract
Focusing on the big error in traditional Shape-From-Shading (SFS) algorithms for hybrid surfaces,a new SFS algorithm for a single image under hybrid surfaces based on perspective projection is proposed.In this paper,the Phong reflection model is used to describe the reflectance property of the surfaces.Assuming that the light source is located at the camera's optical center,the image irradiance equation is established for this model.Then,the image irradiance equation is transformed into the Hamilton-Jacobi Partial Differential Equation (PDE) including the shape information of the surfaces.Using the high-order Lax-Friedrichs (LLF) flux splitting scheme and five-order Weighted Essentially Non-Os-cillatory (WENO) scheme approximates the viscosity solution of the PDE.Finally,the heights of threedimensional surface are obtained.Experimental results show that themaximum error and the mean error of 3D surface recovery of the new algorithm are significantly reduced,compared with the traditional algorithm.关键词
明暗恢复形状/Phong反射模型/透视投影/粘性解Key words
shape from shading/Phong reflection model/perspective projection/viscosity solution分类
信息技术与安全科学引用本文复制引用
赵中滨,张志毅,邢彩燕..基于Phong模型的明暗恢复形状的新算法[J].计算机工程与科学,2018,40(3):481-486,6.基金项目
国家863计划(2013AA10230402) （2013AA10230402）
国家自然科学基金(61303124) （61303124）
