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Projects / Programmes source: ARIS

Parametric shoe last surface model

Research activity

Code Science Field Subfield
2.11.00  Engineering sciences and technologies  Mechanical design   

Code Science Field
T111  Technological sciences  Imaging, image processing 
Keywords
foot, shoe last, surface, NURBS, scanner, parametric model, surface reconstruction
Evaluation (rules)
source: COBISS
Researchers (8)
no. Code Name and surname Research area Role Period No. of publicationsNo. of publications
1.  02859  PhD Jože Duhovnik  Mechanical design  Head  2004 - 2007  1,027 
2.  14128  PhD Tomaž Kolšek  Mechanical design  Researcher  2004 - 2007  66 
3.  19048  PhD Marjan Korošec  Manufacturing technologies and systems  Researcher  2006 - 2007  28 
4.  12725  PhD Leon Kos  Mechanical design  Researcher  2004  249 
5.  16296  Janez Krek  Mechanical design  Researcher  2004 - 2007  39 
6.  12558  Robert Križnar  Manufacturing technologies and systems  Researcher  2004 - 2007  11 
7.  21797  Matjaž Šubelj  Mechanical design  Researcher  2005 
8.  10978  PhD Roman Žavbi  Mechanical design  Researcher  2004 - 2007  190 
Organisations (2)
no. Code Research organisation City Registration number No. of publicationsNo. of publications
1.  0782  University of Ljubljana, Faculty of Mechanical Engineering  Ljubljana  1627031  29,255 
2.  1664  ALPINA, shoe factory, d.o.o.  Žiri  5034728  36 
Abstract
LECAD research group contributed to software development for three-dimensional laser scanner for foot and shoe last scanning. Industrial partner ALPINA obtained a considerable measurement data of shoe lasts, where the surface was described by a cloud of spatial points. The data about shape and characteristic dimensions need further be processed to become usefull for shoe manufacturer or reseller. We intend to develop methods for processing the acquired data, which will be able to extract characteristic anatomic properties and dimensions (length, width and height of intersecions, etc.). The standard procedure to manufacture the shoe lasts is to use the 3D computer model, prepared by a comercial modeller. We therefore intend to convert characteristic dimensions into NURBS parametric surface model , consisting of small number of surface patches. We will develop a data model, which will link the NURBS surface patches to characteristic dimensions of the shoe last. The dimensional parameter changes will automatically affect the surface model. The approprietness of the conversion model will be tested by comparing the surface disagreement on original triangulated surface. We will investigate the methods for global functional deformations of NURBS model (shoes with high heels) as well as the methods for local deformations (smoothing). We will consider the adding of surfaces to the model (technological and fashion requirements). To be able to use NURBS surface model in commercial 3D modellers, we will develop a converter of data into standard IGES 5.0 format. The transformed data can then be used in shoe last preparation. All procedures will be coded in standard programming languages C and Cplus plus. We will develop the interactive 3D graphical viewer to test and demonstrate the use of algorithms. The software will be compatible with existing equipment of the industrial partner.
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