Surface Reconstruction Using Polarization and Photometric Stereo
Surface Reconstruction Using Polarization and Photometric Stereo
复制标题
使用偏振和光度立体进行表面重建
DOI：
10.1007/978-3-540-74272-2_58
复制
发表时间：
2007
影响因子：
--
通讯作者：
E. Hancock
中科院分区：
文献类型：
--
作者：
G. Atkinson;E. Hancock
本文提出了一种新的形状恢复技术，结合光度立体和偏振信息。首先，从偏振数据估计一组模糊的表面法线。这是使用菲涅耳理论来解释从电介质表面反射的光的偏振模式。使用三个不同的已知光源位置重复该过程。然后使用光度学立体消除曲面法线的歧义。不同光源位置的相对像素亮度揭示了正确的表面取向。最后，将所得到的明确的表面法线估计整合以恢复深度图。该技术在不同材料的各种物体上进行了测试。本文还演示了如何通过应用在早期工作中提出的方法来提高深度估计。
This paper presents a novel shape recovery technique that combines photometric stereo with polarization information. First, a set of ambiguous surface normals are estimated from polarization data. This is achieved using Fresnel theory to interpret the polarization patterns of light reflected from dielectric surfaces. The process is repeated using three different known light source positions. Photometric stereo is then used to disambiguate the surface normals. The relative pixel brightnesses for the different light source positions reveal the correct surface orientations. Finally, the resulting unambiguous surface normal estimates are integrated to recover a depth map. The technique is tested on various objects of different materials. The paper also demonstrates how the depth estimates can be enhanced by applying methods suggested in earlier work.