Abstract: A computer-implemented method for estimating a size of a foot comprising: receiving a plurality of images of the foot in relation to a sheet of paper; performing determination of a contour of the sheet of paper in the received plurality of images; using at least one of the received plurality of images to determine an internal contour of the foot; using at least second one of the received plurality of images to determine an external contour of the foot; using the determined internal contour of the foot and the determined external contour of the foot to calculate a horizontal contour of the foot and calculate a size of the horizontal contour of the foot; and using at least third one of the received plurality of images to determine an vertical contour of the foot and calculate a sizes of the vertical contour of the foot.