NDLI: A robust hashing of ID photos

Content Provider	IEEE Xplore Digital Library
Author	Smoaca, A. Petrovici, M. Coltuc, D. Lazarescu, V.
Copyright Year	2011
Description	Author affiliation: Politehnica University of Bucharest, Faculty of Electronics, Telecommunications and Information Technology, Bd. Iuliu Maniu 1-3, Romania (Petrovici, M.; Coltuc, D.; Lazarescu, V.) \|\| Université de Lyon / CNRS, UMR 5516, Laboratoire Hubert Curien, Université de Saint-Etienne, Jean Monnet (Smoaca, A.)
Abstract	The paper proposes an image hashing method that is highly robust to a series of currently encountered attacks on digital images. It is dedicated to images representing ID photos. The extraction of hash value is based on a global method for face recognition. Such approaches need a registration stage which is often obtained by means of face characteristic points. The detection of the characteristic points easily fails in the case of attacks like filtering, noise addition, random line deletion or jpg compression, mainly when they overcome certain limits. Our solution is to attach the characteristic points to the final hash, in order to obtain increased robustness to such attacks. The final hash is obtained by stabilizing an intermediary hash extracted by using Independent Component Analysis. The stabilization is done by clustering. The final hash is given by the cluster label having attached the coordinates of three characteristic points. We show that intermediate hashes of the attacked image approximate a hyper-sphere centered on the original image hash. Due to this fact, the minimization of a cost function representing the proximity to original hashes is sufficient to stabilize the intermediate hashes. We also evaluate the system capacity by estimating the number of freedom degrees for the intermediate hashes of the non-attacked ID photos.
Starting Page	1
Ending Page	4
File Size	882277
Page Count	4
File Format	PDF
ISBN	9781612849447
e-ISBN	9781612849430
DOI	10.1109/ISSCS.2011.5978649
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-30
Publisher Place	Romania
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Training Image coding AWGN Hamming distance Feature extraction Robustness Face
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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