ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., III-5, 153-158, 2016
http://www.isprs-ann-photogramm-remote-sens-spatial-inf-sci.net/III-5/153/2016/
doi:10.5194/isprs-annals-III-5-153-2016
 
06 Jun 2016
EXPLOITATION OF STEREOPHOTOGRAMMETRIC MEASUREMENT OF A FOOT IN ANALYSIS OF PLANTAR PRESSURE DISTRIBUTION
B. Pankova1, T. Koudelka2, K. Pavelka3, M. Janura4, and K. Jelen1 1Charles University in Prague, Faculty of Physical Education and Sport, Dept. of Anatomy and Biomechanics, José Martího 31, Prague 6, 602 52, Czech Republic
2Czech Technical University in Prague, Faculty of Civil Engineering, Dept. of Mechanics, Thákurova 7, Prague 6, 166 29, Czech Republic
3Czech Technical University in Prague, Faculty of Civil Engineering, Dept. of Geomatics, Thákurova 7, Prague 6, 166 29, Czech Republic
4Palacký University Olomouc, Faculty of Physical Culture, Dept. of of Natural Sciences in Kinantropology, Třída Míru 117, 771 11 Olomouc, Czech Republic
Keywords: Stereophotogrammetry, Digital model, 3D analysis, Biomechanics, Foot, Stress distribution Abstract. Stereophotogrammetry as a method for the surface scanning can be used to capture some properties of the human body parts. The objective of this study is to quantify the foot stress distribution in 3D during its quasi-static stand using a footprint into an imprinting material when knowing its mechanical properties. One foot of a female, having the mass of 65kg, was chosen for the FEM foot model construction. After obtaining her foot imprint to the dental imprinting material, its positive plaster cast was created, whose surface was possible to scan using stereophotogrammetry. The imprint surface digital model was prepared with the help of the Konica-Minolta Vivid 9i triangulation scanner. This procedure provides the measured object models in a high resolution. The resulting surface mesh of the foot imprint involved 9.600 nodes and 14.000 triangles, approximately, after reduction due to the FEM analysis. Simulation of foot imprint was solved as the 3D time dependent nonlinear mechanical problem in the ADINA software. The sum of vertical reactions calculated at the contact area nodes was 320.5 N, which corresponds to the mass of 32.67 kg. This value is in a good agreement with the subject half weight – the load of one foot during its quasi-static stand. The partial pressures resulting from this mathematical model match the real pressures on the interface of the foot and imprinting material quite closely. Principally, these simulations can be used to assess the contact pressures in practical cases, e.g., between a foot and its footwear.
Conference paper (PDF, 917 KB)


Citation: Pankova, B., Koudelka, T., Pavelka, K., Janura, M., and Jelen, K.: EXPLOITATION OF STEREOPHOTOGRAMMETRIC MEASUREMENT OF A FOOT IN ANALYSIS OF PLANTAR PRESSURE DISTRIBUTION, ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., III-5, 153-158, doi:10.5194/isprs-annals-III-5-153-2016, 2016.

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