Optical color watermarking based on single-pixel imaging and singular value decomposition in invariant wavelet domain

摘要

A blind optical color watermark scheme is proposed with single-pixel imaging (SPI), redistributed invariant lifting wavelet transform (RILWT) and singular value decomposition (SVD), in which, the watermark is first encrypted by the SPI and then embedded into host image with SVD in redistributed invariant wavelet domain. Bayer array is introduced into SPI to complete full color imaging of target scene (watermark) and the amount of data needs to be stored is reduced to one third. The construction of RILWT and principle components embedding based on SVD provide our watermark scheme high robustness to various kinds of attacks. In addition, the watermark scheme has large capacity, good imperceptibility and no original host image is needed when extracting the watermark. The theory analysis and optical experimental results have demonstrated the good performance and high robustness of the proposed method.