Title :
A blind and readable watermarking technique for color images
Author :
Caramma, M. ; Lancini, R. ; Mapelli, F. ; Tubaro, S.
Author_Institution :
CEFRIEL, Milano, Italy
Abstract :
The paper presents a wavelet domain watermarking technique for color images. The characteristics of this transform domain are well suited for masking consideration, due to its good localization in both space and frequency. The different color sensitivity can be exploited in order to increase the watermarking power, and therefore its reliability. Thanks to the multi-resolution nature of the discrete wavelet transform (DWT) the watermark detection can be obtained iteratively. The technique has been successfully evaluated against attacks such as JPEG and JPEG-2000 compression, filtering, cropping, dithering and digital to analog and analog to digital conversions
Keywords :
analogue-digital conversion; copy protection; copyright; data compression; digital-analogue conversion; discrete wavelet transforms; image coding; image colour analysis; median filters; noise; signal detection; telecommunication security; transform coding; ADC; DAC; DWT; Internet; JPEG compression; JPEG-2000 compression; WWW; World Wide Web; analog to digital conversion; blind watermarking; color images; color sensitivity; cropping; digital to analog conversion; discrete wavelet transform; dithering; frequency localization; iterative watermark detection; masking; median filtering; multiresolution; readable watermarking; space localization; transform domain; watermarking reliability; wavelet domain watermarking; Analog-digital conversion; Color; Digital filters; Discrete transforms; Discrete wavelet transforms; Filtering; Frequency; Transform coding; Watermarking; Wavelet domain;
Conference_Titel :
Image Processing, 2000. Proceedings. 2000 International Conference on
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-6297-7
DOI :
10.1109/ICIP.2000.900990
