1. An image deformation method using a deformation axis, the method comprising: generating an intermediate shape, the intermediate shape including figures that are formed along at least one deformation axis and surround a portion of the deformation axis, the deformation axis including a plurality of points predetermined with respect to an image to be deformed; deforming the deformation axis based on deformation energy of the plurality of points according to a deformation of the deformation axis, wherein the deformation energy is calculated using lengths of segments of the deformation axis divided based on the plurality of points, coordinates of a point on the deformation axis, and coordinates of neighboring points thereof, for considering a maintenance of the lengths of the segments; and deforming the image using the segments of the deformation axis, and determining a thickness of the intermediate shape based on the lengths of the segments of the deformation axis by considering the maintenance of a width of the intermediate shape, wherein the deforming of the image deforms the image by deforming the intermediate shape.