1. An apparatus for generating a digital clone, comprising: a standard human body model generation unit for extracting information about appearance deformations based on joint control angles of joints from posture-based appearance deformation examples, generating a parametric shape control engine in which the appearance deformation information is incorporated, and incorporating the parametric shape control engine in a standard mesh-type human body model, thus generating a standard human body model; and a unique human body model generation unit for receiving multi-view image examples based on a change in a posture of an actor as input, generating a three-dimensional (3D) model of the actor based on the multi-view image examples, and transferring the standard human body model to the 3D model, thus generating a unique human body model, in which unique appearance deformations of the actor based on the change in the posture of the actor are reflected, wherein the 3D model includes estimated locations of joints of a skeletal structure, wherein the standard human body model generation unit further comprises a texture map creation unit for creating a texture map for the standard human body model, and the unique human body model generation unit applies texture information about the multi-view image examples as weights of visibility, and incorporates the weights in the texture map for the standard human body model using an inpainting technique, wherein the standard human body model generation unit comprises: a skeletal structure generation unit for receiving the standard mesh-type human body model and generating the skeletal structure of the standard mesh-type human body model; a keyframe generation unit for generating a plurality of keyframes required to approximate the appearance of the standard mesh-type human body model along the skeletal structure; and a parametric shape control engine generation unit for extracting the appearance deformation information based on the joint control angles of the joints from the posture-based appearance deformation examples, and generating a parametric shape control engine in which response relationships of sections of individual keyframes are modeled in consideration of the appearance deformation information, and wherein the standard human body model generation unit further comprises an example-based parameter learning unit for rendering the keyframes and the skeletal structure using the response relationships, comparing rendered results with the posture-based appearance deformation examples, and then updating response parameter values of the response relationships so that errors in 3D locations of individual vertexes of a mesh structure are reduced.