SVD-and DWT-based color image watermarking scheme
Jingming Li · Journal of Lanzhou University of Technology · 2007
A color image watermarking scheme was proposed based on signular value decomposition value decomposition and discrete wavelet transform.In this scheme,a gray image as watermark was embedded into blue component of color image.In so doing,the invisibility of watermarking was well realized when the characteristics of human visual system(HVS) was taken into consideration.It was found by comparing their signal-noise ratio that the perceptive quality of original image might be better kept when watermark was embedded into blue component than into other color components.The experiment result showed that the watermarking scheme had a better robustness to JPEG compressing,median filtering,and other attacks.