Three-dimensional optical high-resolution profiler with a large observation field: foot arch behavior under low static charge studies |
| |
Authors: | Meneses Jaime Gharbi Tijani Cornu Jean Yves |
| |
Affiliation: | Grupo de Optica, Escuela de Fisica, Universidad Industrial de Santander, Bucaramanga, Colombia. |
| |
Abstract: | Our aim is to describe a method for detecting small deformations from a three-dimensional (3D) shape of large lateral dimensions. For this purpose the measurement method is based on the simultaneous utilization of several 3D optical systems and the phase-shifting technique. In this way, the following problems appear: optical distortion due to the large field observed, nonlinear phase-to-height conversion, conversion of image coordinates into object coordinates for each 3D optical system, and coordinate unification of all optical systems. The resolution is 50 microm with a field of view of 320 mm x 150 mm. We used this system to study the 3D human foot arch deformation under low loads in vivo. First results indicate the hysteresis behavior of the human foot under a low load (50 to 450 N). |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|