A Semi-fragile Watermarking for ROI Image Authentication

Author

Cui, Delong

Author_Institution

Coll. of Comput. & Electron. Inf., Maoming Univ., Maoming

fYear

2008

fDate

30-31 Dec. 2008

Firstpage

302

Lastpage

305

Abstract

In this paper, a watermarking algorithm for ROI (Regions of Interesting) authentication and tamper detection is proposed. The watermarking is embedded in the DWT (Discrete Wavelet Transform) coefficients of the ROB (Regions of Background). The algorithm uses a hashing to detect whether the ROI of image is tampered, and then uses the watermarking to reconstruct the data of ROI. The experiment results show that the embedded watermark is perceptually invisible and robust to various image processing operations. Most importantly, the tampered place can be identified accurately.

Keywords

cryptography; discrete wavelet transforms; image coding; image reconstruction; message authentication; watermarking; DWT coefficient; ROI image authentication; discrete wavelet transform; embedded watermark; hashing function; image processing operation; image reconstruction; semifragile watermarking algorithm; tamper detection; Authentication; Copyright protection; Discrete cosine transforms; Discrete wavelet transforms; Educational institutions; Information security; Information technology; Robustness; Watermarking; Wavelet coefficients; DPCM; ECC; ROI; SHA1; digital watermark; wavelet transform;

fLanguage

English

Publisher

ieee

Conference_Titel

MultiMedia and Information Technology, 2008. MMIT '08. International Conference on

Conference_Location

Three Gorges

Print_ISBN

978-0-7695-3556-2

Type

conf

DOI

10.1109/MMIT.2008.145

Filename

5089119