A first white balance correction value is computed by detecting white pixels from an image. A determination is made as to whether or not a corrected image signal in the face region falls into a second color signal region surrounding a first color signal region that represents a skin color if white balance of the image signal in the face region is corrected based on the first white balance correction value. When it is determined that the corrected image signal of the face region falls into the second color signal region, a second white balance correction value for correcting the image signal is computed based on relationships between the corrected image signal of face region and the first color signal region. The computed second white balance correction value is modified based on information obtained when the image was captured.