Measurement of 3D Foot Shape Deformation in Motion

Figure 1: Examples of the foot sole shape while the subject is running. Recently, techniques for measuring and modeling of human body are recieving attention, because human models are useful for er-gonomic design in manufacturing. We aim to accurately measure the dynamic shape of human foot in motion (i.e. walking or run-ning). Such measurement is profitable for shoe design and sports analysis. In this paper, a projector-camera system is proposed to measure the shape of the naked foot while walking or running. A characteristic pattern is set on the projector, so that correspondence between the projection pattern and the camera captured image can be solved easily. Because pattern switching is not required, the sys-tem can measure foot shape even when the foot is in motion. The proposed method trades “density of measurement ” for “stability of matching”, but the reduced density is sufficient for our purpose. CRCategories: C.4 [Measurement techniques]:; — [I.5.4]: Com-puter vision—Application