Polarization-based transparent surface modeling from two views
Polarization-based transparent surface modeling from two views
复制标题
基于偏振的两个视图透明表面建模
DOI：
--
复制
发表时间：
2003
期刊：
影响因子：
--
通讯作者：
K. Ikeuchi
中科院分区：
文献类型：
--
作者：
D. Miyazaki;M. Kagesawa;K. Ikeuchi
在本文中，我们提出了一种新的方法来恢复透明物体的表面形状。从物体表面反射的光的偏振度取决于反射角，反射角又取决于物体表面的法线;因此，通过测量偏振度，我们能够计算物体的表面法线。然而，偏振度和表面法线并不是一一对应的，这使得我们需要分析从两个不同角度拍摄的两幅偏振图像来解决模糊性。抛物线将是将一个图像中的点对应于另一个图像中的点的有力线索，其中两个点表示物体表面上的同一点。通过比较这些对应点处的偏振度，可以确定真实的表面法线。
In this paper, we propose a novel method to recover the surface shape of transparent objects. The degree of polarization of the light reflected from the object surface depends on the reflection angle which, in turn, depends on the object's surface normal; thus, by measuring the degree of polarization, we are able to calculate the surface normal of the object. However, degree of polarization and surface normal does not correspond one-to-one, making us to analyze two polarization images taken from two different view in order to solve the ambiguity. A parabolic curve will be a strong clue to correspond a point in one image to a point in the other image, where both points represent the same point on object surface. By comparing the degree of polarization at such corresponding points, the true surface normal can be determined.