And here is our Abstract with the proper scientific terminology: Footprint Imaging by Guided-Path Tomography: authored by Nurgiyatna N1, Cantoral Ceballos J1 Wright P1, Vaughan J1,3. Brown-Wilson C2, Fiadzomor P3,4, Scully P J3,4 and Ozanyan K B1,3
1: School of Electrical and Electronic Engineering. 2: School of Nursing Midwifery and Social Work. 3: Photon Science Institute. 4: School of Chemical Engineering and Analytical Science.
In earlier work on Photonic Guided Path Tomography we introduced the principle of imaging surface deformation by four-projection measurements of transmission through strategically placed grooved plastic optical fibres on a flexible surface with a soft foam underlay. Hough transform-based centre-of-mass imaging from data acquired with small area demonstrators using four-fibre crossing points have been reported.
In this work, targeting the dynamic imaging of human footprints, we show results from small area prototypes using only three tomographic projections with only two fibres crossing at any one point, reducing the bending-induced background which is not object-specific.
Reconstructions of bare feet and shoes footprints have been implemented with a small area demonstrator using plastic optical fibres sensitised for relatively hard surfaces, such as high-duty carpets. The measurements are taken with red LEDs and photodiodes on each line integral and images are reconstructed using the iterative Landweber technique.
The results are discussed in terms of the capability of such imaging technology to study variations in gait and walking patterns, as well as the footprint of a human body lying in various positions.