Abstract
In this paper, a semi-fragile watermarking algorithm is proposed to prevent images from being altered, based on dither modulation and linearity of discrete cosine transform (DCT). As the algorithm transforms DCT coefficients in spatial domain using dither modulation and the linearity of DCT, it embeds watermarking information very fast without DCT. The robustness of the pro-posed algorithm against compression proved in a serious of experiments. Furthermore, because a semi-fragile watermark can be embedded into DCT coefficients with only additions and subtractions, watermarking information can be embedded fast with simple computations. As a result, semi-fragile watermark-ing information can be added in a real time to prevent forgeries and alteration in portable devices with limited resources such as digital cameras, digital camcorders and cellular phones.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Similar content being viewed by others
References
Lin, C.-Y., Chang, S.-F.: Semi-Fragile Watermarking for Authenticating JPEG Visual Content. In: Proc. SPIE, Security and Watermarking of Multimedia Contents, San Jose, California, January 2000, pp. 140–151 (2000)
Maeno, K., et al.: New Semi-Fragile Image Authentication Watermarking Techniques Using Random Bias and Non-Uniform Quantization. In: Proc. SPIE Security and Watermarking of Multimedia Contents, San Jose, California, January 2002, pp. 659–670 (2002)
Lin, E.T., et al.: Detection of image alterations using semi-fragile watermarks. In: Proc. SPIE Security and Watermarking of Multimedia Contents, San Jose, California, January 2000, pp. 23–28 (2000)
Chen, B., Wornell, G.: Quantization Index Modulation, a class of provably good methods for digital watermarking and information embedding. IEEE Trans. on Info. Th. 47(4), 1423–1443 (2001)
Chen, B., Wornell, G.: Dither modulation: a new approach to digital watermarking and information embedding. In: Proc. SPIE conference on security and watermarking multimedia contents, January 1999, pp. 342–353 (1999)
Kim, J., Byun, Y., Choi, J.: Image Forensics Technology for Digital Camera. In: Aizawa, K., Nakamura, Y., Satoh, S. (eds.) PCM 2004. LNCS, vol. 3333, pp. 331–339. Springer, Heidelberg (2004)
Lin, E.T., et al.: Detection of image alterations using semi-fragile watermarks. In: Proc. SPIE Security and Watermarking of Multimedia Contents, San Jose, California, January 2000, pp. 23–28 (2000)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2004 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Kim, J., Byun, Y., Choi, J. (2004). Semi-fragile Watermarking Based on Dither Modulation. In: Aizawa, K., Nakamura, Y., Satoh, S. (eds) Advances in Multimedia Information Processing - PCM 2004. PCM 2004. Lecture Notes in Computer Science, vol 3333. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-30543-9_90
Download citation
DOI: https://doi.org/10.1007/978-3-540-30543-9_90
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-23985-7
Online ISBN: 978-3-540-30543-9
eBook Packages: Computer ScienceComputer Science (R0)