Copyright protection of images using human visual masking on DCT-based watermarking

Author

Rangsanseri, Y. ; Thitimajshima, W.

Author_Institution

Dept. of Telecommun. Eng., King Mongkut´´s Inst. of Technol., Bangkok, Thailand

Volume

1

fYear

2002

fDate

2002

Firstpage

419

Abstract

In this paper a new watermarking algorithm for digital images operating in the frequency domain is presented: a sequence of pseudo-random real numbers is embedded in a selected set of DCT coefficients. After embedding, the watermark is adapted to the image to be signed by exploiting the masking characteristics of the Human Visual System (HVS) in order to achieve watermark invisibility without diminishing its robustness. Experimental results demonstrate that the watermark is robust to several signal processing techniques and geometric distortions.

Keywords

copyright; discrete cosine transforms; image coding; message authentication; random sequences; watermarking; DCT coefficients; DCT-based watermarking; copyright protection; digital images; frequency domain operation; human visual masking; human visual system; masking characteristics; pseudo-random real number sequence; watermark detection; watermark invisibility; watermark robustness; watermarking algorithm; Copyright protection; Digital images; Discrete cosine transforms; Frequency domain analysis; Humans; Robustness; Signal processing; Signal processing algorithms; Visual system; Watermarking;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2002. APCCAS '02. 2002 Asia-Pacific Conference on

Print_ISBN

0-7803-7690-0

Type

conf

DOI

10.1109/APCCAS.2002.1114985

Filename

1114985