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Variable Albedo Surface Reconstruction from Stereo and Shape from Shading

10 years 5 months ago
Variable Albedo Surface Reconstruction from Stereo and Shape from Shading
We presen t a multiview method for the computation of object shape and re ectance characteristics based on the integration of shape from shading (SFS) and stereo, for nonconstan talbedo and non-uniformly Lambertian surfaces. First we perform stereo tting on the input stereo pairs or image sequences. When the images are uncalibrated, w e recover the camera parameters using bundle adjustment. Based on the stereo result, we can automatically segment the albedo map (which is taken to be piece-wise constant) using a Minimum Description Length (MDL) based metric, to identify areas suitable for SFS (typically smooth textureless areas) and to deriv e illuminationinformation. The shape and the illumination parameter estimates are re ned using a deformable model SFS algorithm, which iterates bet w een computing shape and illumination parameters. Our method takes into accoun tthe viewing angle dependent foreshortening and specularity e ects, and compensates as much as possible by utilizing infor...
Dimitris Samaras, Dimitris N. Metaxas, Pascal Fua,
Added 12 Oct 2009
Updated 30 Oct 2009
Type Conference
Year 2000
Where CVPR
Authors Dimitris Samaras, Dimitris N. Metaxas, Pascal Fua, Yvan G. Leclerc
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