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William A. P. Smith
Researcher at University of York
Publications - 202
Citations - 5631
William A. P. Smith is an academic researcher from University of York. The author has contributed to research in topics: Statistical model & Facial recognition system. The author has an hindex of 35, co-authored 198 publications receiving 4489 citations. Previous affiliations of William A. P. Smith include Imperial College London & Daresbury Laboratory.
Papers
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Book ChapterDOI
Structure-Preserving Regularisation Constraints for Shape-from-Shading
Rui Huang,William A. P. Smith +1 more
TL;DR: A new framework for shape-from-shading which relies on a novel regularisation term which preserves surface structure is presented, which can recover stable surface estimates from both synthetic and real world images of complex objects, even under extreme illumination.
Proceedings ArticleDOI
Refinement of digital elevation models from shadowing cues
James Hogan,William A. P. Smith +1 more
TL;DR: It is shown that the combination of the shadow segmentation and terrain correction methods can restore the structure of mountain ridges in interpolated SRTM voids using five satellite images, decreasing the RMS error by over 25%.
Book ChapterDOI
Single image estimation of facial albedo maps
TL;DR: This paper describes how a facial albedo map can be recovered from a single image using a statistical model that captures variations in surface normal direction and shows that this process is stable under varying illumination.
Journal ArticleDOI
Estimating Facial Reflectance Properties Using Shape-from-Shading
TL;DR: This paper shows how to estimate facial surface reflectance properties (a slice of the BRDF and the albedo) in conjunction with the facial shape from a single image to synthesise images under novel illumination and how to fit a parametric model of reflectance to the estimated reflectance function.
Journal ArticleDOI
Molecular dynamics simulations of valinomycin and its potassium complex in homogeneous solvents
TL;DR: Global structural functions, radial distribution functions, and VM ring dihedral analysis are presented, along with an analysis of the decomplexation event.