ACM SIGGRAPH 2008 papers
Interactive normal reconstruction from a single image
ACM SIGGRAPH Asia 2008 papers
User-guided shape from shading to reconstruct fine details from a single photograph
ACCV'07 Proceedings of the 8th Asian conference on Computer vision - Volume Part I
Computer Assisted Relief Generation—A Survey
Computer Graphics Forum
On-the-fly multi-scale infinite texturing from example
ACM Transactions on Graphics (TOG)
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Shape from shading (SfS) has always been difficult for real applications due to its intrinsic ill-posedness. In this paper, we propose an interactive SfS method whichefficiently uses human knowledge in order to resolve ambiguity. We propose a global solution of continuous surfaces with a few constraints of surface normals that are interactively imposed to regularize the problem. A surface is divided into local patches, and each local solution is estimated with a fast marching SfS. It is shown that the boundaries of local solutions constitute a weighted Voronoi diagram, which allows for the formation of a global solution from the local ones. Finally, we optimize this global estimation by minimizing an energy functional based on shading and smoothness priors. Reconstruction results from both synthetic and real images demonstrate the usability of the new approach for various modeling applications.