The photograph-signature scheme is widely used in many day-to-day transactions, such as in passport application and others. This paper proposes to embed the handwritten signature into passport size photograph using watermarking technique. The signature is embedded in the photograph, and thus protected from all attempts to copy it. The watermarking methods used guarantee that the photograph is not altered in any disturbing manner and signature is extracted efficiently and exactly later. The embedded photograph can then be used as authentication document. An algorithm for signature embedding and extraction has been developed and implemented. The system has been verified using several images and satisfactory results have been observed.
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