Title :
Image watermarking using spread spectrum technique in log-2-spatio domain
Author :
Wong, Peter H W ; Au, Oscar C. ; Wong, Justy W C
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., Hong Kong
Abstract :
In this paper, we propose to embed the watermark information in the log-2-spatio domain by means of spread spectrum technique. In log-2-spatio domain, the variance of the information is reduced significantly. This improves the efficiency and robustness of spread spectrum technique. Low intensity and mid-band regions are selected to embed the information in order to guarantee an invisible watermark as well as the robustness to JPEG compression. Simulation results show that the embedded information still survives up to the JPEG compression ratio of 14.7
Keywords :
data compression; image coding; image segmentation; spread spectrum communication; JPEG compression; compression ratio; efficiency; image watermarking; log-2-spatio domain; mid-band regions; robustness; spread spectrum technique; Decoding; Embedded computing; Frequency; Image coding; Image segmentation; Robustness; Spread spectrum communication; Transform coding; Visualization; Watermarking;
Conference_Titel :
Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on
Conference_Location :
Geneva
Print_ISBN :
0-7803-5482-6
DOI :
10.1109/ISCAS.2000.857068
