Feature extracting method of input image based on example pyramid and apparatus of face recognition

Based on the previously stored sample image, between the at least one hierarchical level (hierarchical level) sample pyramid (example pyramid) configuration, and the generated codebook (codebook) for the sample image group belonging to each level, including the input image and calculating the similarity, based on the calculated degree of similarity, which extracts a feature of the input image, it is possible to provide a method of extracting features of the input image.