A Blind Watermarking Algorithm Based on Block DCT for Dual Color Images

Abstract

A dual color image blind watermarking algorithm is proposed based on block Discrete Cosine Transformation (DCT). Firstly, the original watermark image and the original host image in RGB color space are converted to YCbCr color space, and the block DCT is implemented on their Y, Cb and Cr layer respectively. Secondly, the low frequency coefficients of each… (More)

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