摘要
针对含高光表面三维形状重构的需求,设计了一种基于从明暗恢复形状(SFS)方法的三维重构系统。在正交投影条件下由CCD相机获取点光源照射下的物体表面图像,使用Ward反射模型描述含高光表面的反射特性,建立物体表面图像辐照度方程。系统软件将该方程转化为包含物体高度信息的H-J偏微分方程,并计算此偏微分方程的解,得到物体的高度函数,进而恢复出物体的表面形状。实验表明,该系统可以有效地重构含高光表面的三维形状。
In order to meet the needs of recovering the 3D shape of surfaces with highlight,a 3D recovery system by using shape from shading（SFS） approach is designed.The CCD camera gets the image of a surface under a point light source with the orthographic protection.And the Ward reflectance model is used to express the reflectance property of surfaces with highlight and the image irradiance equation is established.The system software transforms the resultant equation into a Hamilton-Jacobi partial differential equation including the height of the shape.Then,the solution of the equation can be computed by the software and the height function is obtained.Further,the system software outputs the recovered surface shape.Experiments demonstrate that the designed system can effectively recover 3D shape of surfaces with highlight.
出处
《光学仪器》
2012年第4期86-89,共4页
Optical Instruments
基金
陕西省教育厅科研计划项目资助(11JK0996)
陕西省自然科学基础研究计划资助项目(2011JQ8004)
国家自然科学基金资助项目(61102144)
教育部科学技术研究重点资助项目(212176)
