Digital image processing techniques applied to pressure analysis and morphological features extraction in footprints.

BUCHELLY, F. J.; MAYORCA, D.; BALLARIN, V.; PASTORE, J.

Journal of Physics: Conference Series

IOP Publishing Limited

Lugar: Londres; Año: 2016 vol. 705 p. 1 - 11

This paper shows the correlation between foot morphology and pressure distribution on footplant by means of a morphological parameters analysis and pressure calculation. Footprint images were acquired using an optical pedobarograph and then processed for obtaining binary masks and intensity images in gray scale. Morphological descriptors were obtained from the binary images and the Hernandez Corvo (HC) index was automatically calculated for determine the type of foot. Pressure distributions were obtained from gray scale images making a correspondence between light intensity in footprints and pressure. Pressure analysis was performed by finding the maximum pressure, the mean pressure and the ratio between them that determines the uniformity of the distribution. Finally, a high correlation was found between this ratio and the type of foot determined by HC index.