Please use this identifier to cite or link to this item:
https://doi.org/10.1109/CVPR.2013.197
DC Field | Value | |
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dc.title | Calibrating photometric stereo by holistic reflectance symmetry analysis | |
dc.contributor.author | Wu, Z. | |
dc.contributor.author | Tan, P. | |
dc.date.accessioned | 2014-06-19T03:01:54Z | |
dc.date.available | 2014-06-19T03:01:54Z | |
dc.date.issued | 2013 | |
dc.identifier.citation | Wu, Z., Tan, P. (2013). Calibrating photometric stereo by holistic reflectance symmetry analysis. Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition : 1498-1505. ScholarBank@NUS Repository. https://doi.org/10.1109/CVPR.2013.197 | |
dc.identifier.issn | 10636919 | |
dc.identifier.uri | http://scholarbank.nus.edu.sg/handle/10635/69545 | |
dc.description.abstract | Under unknown directional lighting, the uncalibrated Lambertian photometric stereo algorithm recovers the shape of a smooth surface up to the generalized bas-relief (GBR) ambiguity. We resolve this ambiguity from the half vector symmetry, which is observed in many isotropic materials. Under this symmetry, a 2D BRDF slice with low-rank structure can be obtained from an image, if the surface normals and light directions are correctly recovered. In general, this structure is destroyed by the GBR ambiguity. As a result, we can resolve the ambiguity by restoring this structure. We develop a simple algorithm of auto-calibration from separable homogeneous specular reflection of real images. Compared with previous methods, this method takes a holistic approach to exploiting reflectance symmetry and produces superior results. © 2013 IEEE. | |
dc.description.uri | http://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1109/CVPR.2013.197 | |
dc.source | Scopus | |
dc.type | Conference Paper | |
dc.contributor.department | ELECTRICAL & COMPUTER ENGINEERING | |
dc.description.doi | 10.1109/CVPR.2013.197 | |
dc.description.sourcetitle | Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition | |
dc.description.page | 1498-1505 | |
dc.description.coden | PIVRE | |
dc.identifier.isiut | 000331094301071 | |
Appears in Collections: | Staff Publications |
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