Open AccessA CAD-BASED CONCEPTUAL METHOD FOR SKULL PROSTHESIS MODELLING
Author(s) -
Marcelo Rudek,
Yohan Boneski Gumiel,
Osíris Canciglieri,
Naomi Asofu,
Gerson Linck Bichinho
Publication year - 2018
Publication title -
facta universitatis. series: mechanical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 16
eISSN - 2335-0164
pISSN - 0354-2025
DOI - 10.22190/fume170618018r
Subject(s) - cad , polygon (computer graphics) , computer science , bézier curve , set (abstract data type) , similarity (geometry) , artificial intelligence , image (mathematics) , data mining , pattern recognition (psychology) , engineering drawing , mathematics , engineering , geometry , telecommunications , frame (networking) , programming language
The geometric modeling of a personalized part of the tissue built according to individual morphology is an essential requirement in anatomic prosthesis. A 3D model to fill the missing areas in the skull bone requires a set of information sometimes unavailable. The unknown information can be estimated through a set of rules referenced to a similar yet known set of parameters of the similar CT image. The proposed method is based on the Cubic Bezier Curves descriptors generated by the de Casteljou algorithm in order to generate a control polygon. This control polygon can be compared to a similar CT slice in an image database. The level of similarity is evaluated by a meta-heuristic fitness function. The research shows that it is possible to reduce the amount of points in the analysis from the original edge to an equivalent Bezier curve defined by a minimum set of descriptors. A study case shows the feasibility of method through the interoperability between the prosthesis descriptors and the CAD environment.