关于组合多针图复原物体3D表面形状的研究

光度立体系统很易确定物体表面任意点方向及相对深度，但不能确定绝对深度，为确定绝对深度，本文提出的算法首先利用双目光度立体系统的每个摄象机分别获得一幅针图，并求出左、右两针图内对应区域的视差。然后，经适当组合及精确的匹配，重建３－Ｄ物体表面深度。这一方法对进一步开发３－Ｄ表面深度重建及复原景物结构探索性研究有着十分重要的意义。

On Combining Multiple Needle Maps for Recovering Depth of 3-D Object Surface

The photometric stereo system can easily determine the surface orietation and relative depth of objects,but can not determine absolute depth. In order to determine absolute depth,this paper proposes an algorithm,this algorithm can obtain a needle map respectively by each camera of binocular photometric stereo system first, then solve disparities between the corresponding areas in two needle maps, finally combine disparities correctly, match them accurately and reconstruct 3-D depth of the object surface. This method is highly important for us to develop further exploring research on 3-D surface depth reconstruction and recovery of scene structure.