We present image data hiding and authentication schemes based on halftoning and coordinate projection. The proposed data hiding scheme can embed images of the same size and similar bit depth into the cover image and robustness against compression is demonstrated. The image authentication scheme is based on the data hiding scheme and can detect, localize, and repair the tampered area of the image. Furthermore, the self-repairing feature of the authentication scheme has a hologram-like quality; any portion of the image can be used to reconstruct the entire image, with a greater quality of reconstruction as the portion size increases.
This article is part of the series Emerging Applications of Multimedia Data Hiding.
Multimedia Data Hiding and Authentication via Halftoning and Coordinate Projection
IBM Research Division, Thomas J.Watson Research Center, P.O. Box 218, Yorktown Heights, NY 10598, USA
EURASIP Journal on Advances in Signal Processing 2002, 2002:634070 doi:10.1155/S1110865702000513
The electronic version of this article is the complete one and can be found online at: http://asp.eurasipjournals.com/content/2002/2/634070
|Received:||4 May 2001|
|Revisions received:||14 September 2001|
|Published:||14 February 2002|
© 2002 Wu