Title :
Image enhancement towards soft image authentication
Author :
Xie, Liehua ; Arce, Gonzalo R. ; Lewis, Arianne ; Basch, Bert E.
Author_Institution :
Dept. of Electr. & Comput. Eng., Delaware Univ., Newark, DE, USA
Abstract :
This paper describes an image enhancement technique that can be made to any message authentication code (MAC) to improve its survivability against acceptable signal distortions such as re-compression, etc. This algorithm improves the MAC´s error tolerance by transforming the image and creating an error tolerance buffer. As a result, minor acceptable changes in the coefficients (caused by common signal distortions) will not alter the value of the MAC. A change in a coefficient will affect a change in the MAC only if the coefficient change exceeds a given threshold. The performance of this method is analyzed for two types of image manipulation: JPEG compression and image tampering
Keywords :
data compression; image coding; image enhancement; message authentication; multimedia systems; JPEG compression; error tolerance; image authentication; image enhancement; image manipulation; image tampering; message authentication code; multimedia; performance evaluation; signal distortions; survivability; Authentication; Computer errors; Cryptography; Distortion; Histograms; Image analysis; Image coding; Image enhancement; Laboratories; Streaming media;
Conference_Titel :
Multimedia and Expo, 2000. ICME 2000. 2000 IEEE International Conference on
Conference_Location :
New York, NY
Print_ISBN :
0-7803-6536-4
DOI :
10.1109/ICME.2000.869647
