A memory (100) stores eigen vector and weight extracted from training images and is classified into normal and occluded facial images. A recognition unit (200) extracts eigen vectors and weight from an input facial image using principle component analysis (PCA) to classify normal and occluded face using support vector machine. A decision unit (300) decides the occluded facial image using stored image. Independent claims are also included for the following: (1) face detection method; and (2) facial image authentication method.
System and method for detecting a face