Watermarking scheme for authentication of compressed image
UNSPECIFIED (2003) Watermarking scheme for authentication of compressed image. In: Conference on Multimedia Systems and Applications VI, SEP 08-09, 2003, ORLANDO, FL.Full text not available from this repository.
As images are commonly transmitted or stored in compressed form such as JPEG, to extend the applicability of our previous work(1), a new scheme for embedding watermark in compressed domain without resorting to cryptography is proposed. In this work, a target image is first DCT transformed and quantised. Then, all the coefficients are implicitly watermarked in order to minimize the risk of being attacked on the unwatermarked coefficients. The watermarking is done through registering/blending the zero-valued coefficients with a binary sequence to create the watermark and involving the unembedded coefficients during the process of embedding the selected coefficients. The second-order neighbors and the block itself are considered in the process of the watermark embedding in order to thwart different attacks such as cover-up, vector quantisation, and transplantation. The experiments demonstrate the capability of the proposed scheme in thwarting local tampering, geometric transformation such as cropping, and common signal operations such as lowpass filtering.
|Item Type:||Conference Item (UNSPECIFIED)|
|Subjects:||Q Science > QC Physics|
|Series Name:||PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE)|
|Journal or Publication Title:||MULTIMEDIA SYSTEMS AND APPLICATIONS VI|
|Publisher:||SPIE-INT SOC OPTICAL ENGINEERING|
|Editor:||Tescher, AG and Vasudev, B and Bove, VM and Divakaran, A|
|Number of Pages:||9|
|Page Range:||pp. 1-9|
|Title of Event:||Conference on Multimedia Systems and Applications VI|
|Location of Event:||ORLANDO, FL|
|Date(s) of Event:||SEP 08-09, 2003|
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