Authors:
Mohammed A. M. Abdullah
;
S. S. Dlay
and
W. L. Woo
Affiliation:
Newcastle University, United Kingdom
Keyword(s):
Biometric Protection, Biometric Watermarking, Discrete Cosine Transform, Iris Recognition, Template Security.
Related
Ontology
Subjects/Areas/Topics:
Applications and Services
;
Computer Vision, Visualization and Computer Graphics
;
Media Watermarking and Security
Abstract:
With the expanded use of biometric systems, the security of biometric trait is becoming increasingly important.
When biometric images are transmitted through insecure channels or stored as a raw data, they become subject
to the risk of being stolen, faked and attacked. Hence, it is imperative that robust and reliable means of
protection are implemented. Various methods of data protection are available and digital watermarking is one
such techniques. This paper presents a new method for protecting the integrity of the iris images using a
demographic text as a watermark. The watermark text is embedded in the middle band frequency region of
the iris image by interchanging three middle band coefficients pairs of the Discrete Cosine Transform (DCT).
Experimental results show that exchanging more than one pair will make middle band scheme more robust
against malicious attack along with making it resistant to image manipulation such as compression. The results
also illustrate that our water
marking algorithm does not introduce discernible decrease on iris image quality
or biometric recognition performance.
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