Abstract
In this paper we propose a local-shape based method for correcting shape-from-shading information for raw surface height recovery of faces aiming to generate differently illuminated versions of a face. The underpinning idea comes from the observation that subtle changes in the elements of a gradient field can cause notable changes in its integrated surface. A new gradient field is calculated by modifying its orientations in accordance with critical points on the surface and local shape indicators. A raw height map is then calculated by integrating such field. Experiments show that altering the directions of a surface normal field of a face can be enough to generate differently illuminated fixed-pose versions of a face from a single image.
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© 2004 Springer-Verlag Berlin Heidelberg
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Castelán, M., Hancock, E.R. (2004). A Method for Re-illuminating Faces from a Single Image. In: Sanfeliu, A., Martínez Trinidad, J.F., Carrasco Ochoa, J.A. (eds) Progress in Pattern Recognition, Image Analysis and Applications. CIARP 2004. Lecture Notes in Computer Science, vol 3287. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-30463-0_33
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DOI: https://doi.org/10.1007/978-3-540-30463-0_33
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