Dual watermarking algorithm of colored images based on wavelet transform
Peng Li · Jisuanji gongcheng yu sheji · 2008
A dual watermarking algorithm for colored images based on wavelet transform is proposed.The given color image is split into itsthreecomponents in the YIQ color space first,then the luminance component Y is chosen and decomposedby one levelDWT(discrete wavelet transform).Then some of its sub-images are selected to do so to choose the corporate position to embed the watermarks.The-oretical analysis and experiment results show that the watermark generated with the proposed algorithm is imperceptible and of great ro-bustness.