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Rmaon F. Sarraga, "Computer Modeling of Surfaces with Arbitrary Shapes," IEEE Computer Graphics and Applications, vol. 10, no. 2, pp. 6777, March/April, 1990.  
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@article{ 10.1109/38.50675, author = {Rmaon F. Sarraga}, title = {Computer Modeling of Surfaces with Arbitrary Shapes}, journal ={IEEE Computer Graphics and Applications}, volume = {10}, number = {2}, issn = {02721716}, year = {1990}, pages = {6777}, doi = {http://doi.ieeecomputersociety.org/10.1109/38.50675}, publisher = {IEEE Computer Society}, address = {Los Alamitos, CA, USA}, }  
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TY  MGZN JO  IEEE Computer Graphics and Applications TI  Computer Modeling of Surfaces with Arbitrary Shapes IS  2 SN  02721716 SP67 EP77 EPD  6777 A1  Rmaon F. Sarraga, PY  1990 VL  10 JA  IEEE Computer Graphics and Applications ER   
A detailed description is given of a local mathematical procedure for constructing a geometrically C/sup 1/ surface by interpolating a grid of cubic Bezier curves that meet in a quite general fashion (for example, they need not meet rectangularly). The constructed surface is a composite mosaic of independently parameterized tensorproduct Bezier patches of different degrees (maximum of 6*6). Adjacent patches can be made either C/sup 1/ or C/sup 0/ continuous, as desired. The overall surface can have almost any shape that arises in practice, including the closed surfaces used in solid modeling. Because of its locality, the procedure can be applied at different times in different locations of a surfacetobe; for example, it can be used to combine preexisting smaller surfaces.
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