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Image based document authentication using DCT
G. Garg, P.K. Sharma,
Published in
Volume: 22
Issue: 6-7
Pages: 725 - 729
This paper is an attempt towards obtaining a method for validation of personal identification documents such as licenses, photo IDs. The method tries to obtain a photosignature from the image document by using certain image processing techniques. The method uses discrete cosine transform (DCT) based technique to obtain the required signature. This gives a substantially compressed signature which is quite unique for that particular document. In case of authentication from a large database the signature can be used as hashing function for indexing. Results of experiments done on a large database have validated the approach. © 2001 Elsevier Science B.V. All rights reserved.
About the journal
JournalPattern Recognition Letters