Disclosed are novel techniques for gender determination and high-precision age estimation using face images. The disclosed age estimation method includes: a step in which face-image data of a subject is acquired； a step in which spatial-frequency intensities are computed from the acquired face-image data； and a step in which the estimated age of the subject is computed by applying the computed spatial-frequency intensities to a pre-prepared model or formula representing the correlation between age and spatial-frequency intensities obtained from face-image data.
