1. A method of generating three-dimensional (3D) volumetric data, the method comprising: generating, using a processor, a multilayer image; generating volume information and a type of a visible part of an object, based on the generated multilayer image; generating volume information and a type of an invisible part of the object, based on the generated multilayer image; generating motion data, by capturing a motion of the object; generating a 3D object model, the 3D object model including a combination of 3D meshes, based on a real body type of the object; performing retargeting, to match the generated motion data to the generated 3D object model; and generating, based on a result of the retargeting, a slicing-based multilayer image; wherein the generating of the slicing-based multilayer image based on the result of the retargeting comprises: generating a primitive template 3D object model or a motion-augmented 3D object model, based on the motion data and the 3D object model; generating labeled information and depth information, when a pixel corresponding to a current depth value exists in the generated motion-augmented 3D object model or the generated primitive template 3D object model, wherein the labeled information has object part identification information of a part of the object; and generating the multilayer image, using the generated labeled information and the generated depth information.