Science and Development Network (SciDev.Net)
In this paper, a semi-blind biometric watermarking scheme is proposed for fingerprinting application. Watermark is derived from face image using principal component analysis. These face features are then embedded in host image using block-based watermarking scheme, which uses singular value decomposition transform. This watermarking scheme works by initially dividing the original image into non-overlapping blocks, applying the SVD transform to each of them and subsequently embedding a watermark into the singular vectors. Each watermark value is embedded by modifying angles formed by the right singular vectors of each block with respect to some arbitrary plane. During embedding process the orthogonal property of the right singular vectors matrix is preserved.