A Biometric Authentication Method for a Digital Image File Using a Discrete Wavelet Transform

Abstract

Recently, several digital watermarking techniques have been proposed for hiding data in a frequency domain of image signals. However, in order to detect a watermarking sufficiently after heavy compression, the quality on an image might be visibly deteriorated by a digital watermarking with strong intensity. We have proposed a biometric authentication method for a digital image file using a discrete wavelet transform. The proposed method uses inherent information of an image for identification and never changes the image. The experimental results show that the proposed method has an excellent property on the tolerance to compression.