%0 Conference Proceedings
%4 dpi.inpe.br/vagner/1999/11.29.10.02
%2 sid.inpe.br/banon/2001/03.30.15.58.26
%@doi 10.1109/SIBGRA.1999.805716
%T Piecewise trilinear deformation of tomographic models
%D 1999
%A Melo, Sílvio de Barros,
%E Stolfi, Jorge,
%E Tozzi, Clésio Luis,
%B Brazilian Symposium on Computer Graphics and Image Processing, 12 (SIBGRAPI)
%C Campinas, SP, Brazil
%8 17-20 Oct. 1999
%I IEEE Computer Society
%J Los Alamitos
%P 113-123
%S Proceedings
%1 SBC - Brazilian Computer Society and UNICAMP - University of Campinas
%K tomographic images, brain models, piecewise trilinear.
%X In this work we introduce an iterative method that deforms brain models built from tomographic images. The deformation is used for normalization purposes: individual models are deformed to match the shape, orientation and internal morphology of a reference model. In this method the individual and the reference models are each enclosed in a cube which is subdivided to form a rectangular grid. The vertices in the individual model's grid are perturbed and the contents of each cell is then trilinearly mapped into a cube. The composite of all resulting cubes form the deformed model to be compared with the reference. The perturbations on the vertices are generated by a simulated annealing optimization technique. To maximize the performance, the models are represented in a multi-resolution fashion and the method is parallelized.
%3 055-42704282.pdf
%O The conference was held in Campinas, SP, Brazil, from October 17 to 20.