Title :
Watermarking for still images using the human visual system in the DCT domain
Author :
Kwon, O-Hyung ; Kim, Young-Sik ; Park, Rae-Hong
Author_Institution :
Dept. of Electr. Eng., Sogang Univ., Seoul, South Korea
Abstract :
In this paper, we propose a digital watermarking method for still images, in which the human visual system (INS) is used in the discrete cosine transform (DCT) domain. The modulation transfer function (MTF) of the HVS model is employed to increase the invisibility of the inserted watermark in images. Experimental results show that the proposed watermarking method is robust to several common image processing techniques, including joint photographic experts group (JPEG) compression, low-pass filtering, multiple watermarking, and cropping
Keywords :
cryptography; data compression; discrete cosine transforms; image coding; optical transfer function; transform coding; DCT domain; JPEG compression; cropping; digital watermarking method; human visual system model; inserted watermark; invisibility; low-pass filtering; modulation transfer function; multiple watermarking; still images; Discrete cosine transforms; Humans; Image coding; Image processing; Low pass filters; Robustness; Transfer functions; Transform coding; Visual system; Watermarking;
Conference_Titel :
Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-5471-0
DOI :
10.1109/ISCAS.1999.779946
