Stereo Image Analysis of Non-Lambertian Surfaces
International Journal of Computer Vision
International Journal of Computer Vision
Circularly polarized spherical illumination reflectometry
ACM SIGGRAPH Asia 2010 papers
Computational plenoptic imaging
ACM SIGGRAPH 2012 Courses
Estimating surface normals from spherical stokes reflectance fields
ECCV'12 Proceedings of the 12th international conference on Computer Vision - Volume 2
Shape and Refractive Index from Single-View Spectro-Polarimetric Images
International Journal of Computer Vision
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A new technique for surface reconstruction is developed that uses polarization information from two views. One common problem arising from many multiple view techniques is that of finding correspondences between pixels on each image. In the new method, these correspondences are found by exploiting the spontaneous polarization of light caused by reflection to recover surface normals. These normals are then used to recover surface height. The similarity between reconstructed surface regions determines whether or not a pair of points correspond to each other. The technique is thus able to overcome the convex/concave ambiguity found in many single view techniques. Because the technique relies on smooth surface regions to detect correspondences, rather than feature detection, it is applicable to objects normally inaccessible to stereo vision. Also due to this fact, it is possible to remove noise without causing oversmoothing problems.