1. A method for obtaining a three-dimensional (3D) face model through an apparatus for obtaining the 3D face model using a portable camera, comprising: capturing images of a user's face depending on an image capture guide user interface (UI) by using the portable camera; obtaining images from the captured images of the user's face at specific frame intervals to detect face contour lines; recognizing key points from the obtained images and analyzing spatial relationships between the obtained images to generate a 3D point cloud; connecting points of the 3D point cloud to create a 3D face mesh; matching a pre-stored 3D face standard model to the 3D face mesh to model a smoothing high-quality 3D face model; and synthesizing the obtained images of the user's face to create texture maps for mapping with the 3D face model, wherein, in the matching, landmarks are set in the 3D face mesh by using landmarks of the pre-stored 3D face standard model, the pre-stored 3D face standard model and the 3D face mesh are aligned by utilizing an iterative closest points (ICP) algorithm based on corresponding landmarks, and thereafter, the landmarks of the pre-stored 3D face standard model are first changed to landmarks of the 3D face mesh in position, and remaining vertices of the pre-stored 3D face standard model are then matched to vertices of the 3D face mesh through nonlinear deformation.