Colour filter array interpolation based self recovery with anti-cropping capability
by Zhenxing Qian, Xinpeng Zhang, Guorui Feng, Yanli Ren
International Journal of Multimedia Intelligence and Security (IJMIS), Vol. 1, No. 2, 2010

Abstract: In this paper, we introduce a fragile watermarking method for colour image recovery via colour filter array (CFA) interpolation. Channels of a colour image are turned to a grey image according to Bayer patterns, which is embedded into the original image as reference-bits along with some authentication-bits generated from the image. On the receiver side, the authentication-bits are extracted to restore the original size of the watermarked image and identify the tampered regions if it is artificially cropped or tampered. Then the reference-bits are extracted from the reserved blocks to reconstruct the contents of the tampered regions by the colour filter array interpolation algorithm. Experiments indicate the proposed method provides anti-cropping capability with good self-recovery quality.

Online publication date: Sun, 17-Oct-2010

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Multimedia Intelligence and Security (IJMIS):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com