A method begins by a DS processing module generating a plurality of encoded slices from a data segment using an error encoding function. Accordingly, laminating may be performed on a material having an irregular area and an irregular shape, such as a genuine leather, and a sponge may be prevented from adhering to a laminating roller during a laminating operation. The indicator further includes a fishing rod holder, a fishing line holder, and an illuminating device. Then, active contours are generated by the contour determination module and the active contour module, so as for the geometric center axis computing module to calculate geometric center axes.