DocumentCode
2634510
Title
A Fragile Watermarking with Authentication and Post-Compression for Digital Camera
Author
Wang, Chuen-Ching ; Chang, Yao-Tang ; Chi, Ming-Jun
Author_Institution
Dept. of Electron. Eng., Nat. Changhua Univ. of Educ., Changhua
fYear
2008
fDate
18-20 June 2008
Firstpage
175
Lastpage
175
Abstract
In this paper we propose a novel fragile watermarking for digital camera named compression-watermarking algorithm (CWA). It bases on modifying the last non-zero coefficient of DCT quantized-block in JPEG image. The proposed algorithm not only can provide the authentication ability but also can increase the compression ratio of the JPEG compressed domain image. Therefore, the CWA can be applied in the DCT-based domain application to provide authentication and bit rate reduction.
Keywords
data compression; discrete cosine transforms; image coding; image sensors; watermarking; DCT quantized-block; JPEG image; authentication methods; bit rate reduction; compression-watermarking algorithm; digital camera; fragile watermarking; Authentication; Bit rate; Change detection algorithms; Digital cameras; Digital images; Discrete cosine transforms; Frequency; Image coding; Transform coding; Watermarking;
fLanguage
English
Publisher
ieee
Conference_Titel
Innovative Computing Information and Control, 2008. ICICIC '08. 3rd International Conference on
Conference_Location
Dalian, Liaoning
Print_ISBN
978-0-7695-3161-8
Electronic_ISBN
978-0-7695-3161-8
Type
conf
DOI
10.1109/ICICIC.2008.31
Filename
4603364
Link To Document