1. An apparatus for generating a multi-view face descriptor comprising: a multi-view face database which stores sets of training face images and sets of test face images, each set including a mosaic view of a single identity; a basis matrix generator which generates a basis matrix of the training face images shown from respective viewpoints searched from the multi-view face database; a feature extractor which extracts feature vectors of a test face image shown from each viewpoint using the basis matrix of the training face images searched from the multi-view face database; a to-be-registered view selector which searches the test face images using the feature vectors extracted by the feature extractor and selects a plurality of the viewpoints as registered viewpoints according to the search results; and a face descriptor generator which generates a multi-view face descriptor by synthesizing face descriptors having the plurality of selected viewpoints.