DocumentCode :
1442308
Title :
Restoration of Brick and Stone Relief from Single Rubbing Images
Author :
Li, Zhuwen ; Wang, Song ; Yu, Jinhui ; Ma, Kwan-Liu
Author_Institution :
State Key Lab. of CAD&CG, Zhejiang Univ., Hangzhou, China
Volume :
18
Issue :
2
fYear :
2012
Firstpage :
177
Lastpage :
187
Abstract :
We present a two-level approach for height map estimation from single images, aiming at restoring brick and stone relief (BSR) from their rubbing images in a visually plausible manner. In our approach, the base relief of the low frequency component is estimated automatically with a partial differential equation (PDE)-based mesh deformation scheme. A few vertices near the central area of the object region are selected and assigned with heights estimated by an erosion-based contour map. These vertices together with object boundary vertices, boundary normals as well as the partial differential properties of the mesh are taken as constraints to deform the mesh by minimizing a least-squares error functional. The high frequency detail is estimated directly from rubbing images automatically or optionally with minimal interactive processing. The final height map for a restored BSR is obtained by blending height maps of the base relief and high frequency detail. We demonstrate that our method can not only successfully restore several BSR maps from their rubbing images, but also restore some relief-like surfaces from photographic images.
Keywords :
image restoration; least squares approximations; mesh generation; partial differential equations; base relief; boundary normals; brick and stone relief restoration; erosion-based contour map; height map estimation; high frequency detail; least-squares error functional minimization; object boundary vertices; partial differential equation based mesh deformation scheme; single rubbing images; Frequency estimation; Image restoration; Pixel; Shape; Skeleton; Surface reconstruction; Three dimensional displays; 3D modeling; cultural heritage.; geometric constraints; relief; restoration; rubbing images;
fLanguage :
English
Journal_Title :
Visualization and Computer Graphics, IEEE Transactions on
Publisher :
ieee
ISSN :
1077-2626
Type :
jour
DOI :
10.1109/TVCG.2011.26
Filename :
5708141
Link To Document :
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