Measurement of 3D foot shape deformation in motion

Recently, techniques for measuring and modeling of human body are recieving attention, because human models are useful for ergonomic design in manufacturing. We aim to accurately measure the dynamic shape of human foot in motion (i.e. walking or running). 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 system 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.