Adaptive Geometry Image
  Chih-Yuan Yao     Tong-Yee Lee     Kuo-Wen Chen  
IEEE Transactions on Visualization and Computer Graphics, Volume 14 Issue 4, July 2008

We present a novel postprocessing utility called adaptive geometry image (AGIM) for global parameterization techniques that can embed a 3D surface onto a rectangular domain. This utility first converts a single rectangular parameterization into many different tessellations of square geometry images(GIMs) and then efficiently packs these GIMs into an image called AGIM. Therefore, undersampled regions of the input parameterization can be up-sampled accordingly until the local reconstruction error bound is met. The connectivity of AGIM can be quickly computed and dynamically changed at rendering time. AGIM does not have T-vertices, and therefore, no crack is generated between two neighboring GIMs at different tessellations. Experimental results show that AGIM can achieve significant PSNR gain over the input parameterization, AGIM retains the advantages of the original GIM and reduces the reconstruction error present in the original GIM technique. The AGIM is also suitable for global parameterization techniques based on quadrilateral complexes. Using the approximate sampling rates, the PolyCube-based quadrilateral complexes with AGIM can outperform state-of-the-art multichart GIM technique in terms of PSNR.



author = {Yao, Chih-Yuan and Lee, Tong-Yee},

title = {Adaptive Geometry Image},

journal = {IEEE Transactions on Visualization and Computer Graphics},

issue_date = {July 2008},

volume = {14},

number = {4},

month = jul,

year = {2008},

issn = {1077-2626},

pages = {948--960},

numpages = {13},

url = {},

doi = {10.1109/TVCG.2008.39},

acmid = {1373244},

publisher = {IEEE Educational Activities Department},

address = {Piscataway, NJ, USA},

keywords = {Computational Geometry and Object Modeling, Computer Graphics, Computer Graphics, Computational Geometry and Object Modeling, Curve, surface, solid, and object representations, Modeling packages, Curve, Modeling packages, and object representations, solid, surface}, }