3-d shape measurements using statistical curvature analysis

Details 3-d shape measurements using statistical curvature analysis 3-d shape measurements using statistical curvature analysis

G - Physics

06

G

G06G 7/60 (2006.01) A61B 5/055 (2006.01) A61B 6/00 (2006.01) A61M 29/00 (2006.01) A61M 31/00 (2006.01) G01R 33/32 (2006.01) G01R 33/48 (2006.01) G06F 17/00 (2006.01) G06G 7/48 (2006.01) G06G 7/58 (2006.01) G06T 7/60 (2006.01)

Patent

CA 2364176

A three dimensional curvature algorithm (fig. 1) using linear regression for modeling biological matter. A three dimensional representation of a structure is obtained by scanning the matter. Selected regions of the scanned structure are assigned numerical values. A number of curvature measurements are calculated based on vertices. Linear regression analysis is used to obtain a coefficient of regression for all curvatures. Variance inflation factors are calculated for the curvature measurements. Multiple regressions are performed to obtain a best fit model.

L'invention concerne un algorithme de courbure tridimensionnelle utilisant la régression linéaire afin de modéliser une matière biologique. Pour obtenir une représentation tridimensionnelle d'une structure, on balaie cette matière. On attribue des valeurs numériques à des régions choisies de la structure balayée. Sur la base des sommets, on effectue un certain nombre de mesures de courbure. On utilise l'analyse par régression linéaire afin d'obtenir un coefficient de régression pour toutes les courbures. On calcule des facteurs d'extension de variance pour les mesures de courbure. On effectue plusieurs régressions pour obtenir un modèle optimal.

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