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Palmprint Authentication Based on DCT-Based Watermarking

With the rapid development of biometric technology, the security issues have drawn people's greater attention because some biometric features are Easy to forge and are not replaceable. As a result, the security issue of biometric system extremely critical to be solved. In this paper, we introduce a public watermarking algorithm which is based on Discrete Cosine Transformation (DCT). By using the proposed algorithm, the finger geometry is embedded into the region of interest (ROI) of palmprint image. This method has the ability to increase the security of both the palmprint image and the finger geometry. Experimental results performed on a database of 86 hands (10 impressions per hand) show that the proposed algorithm is effective, and the watermarking operation has little impact on the recognition performance.